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Journal articles on the topic 'Cocoon yields'
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1
Mabel, M. Caccam, A. Guiner Josephine, D. Supsup Roel, I. Manuel Jr Jaime, and M. Barrameda Evangel. "Improving mulberry (Morus alba L.) leaf yield, silkworm (Bombyx mori L.) cocoon yield and income using sustainable fertilizer management practices | JBES 2022." Journal of Biodiversity and Environmental Sciences | JBES 20, no. 2 (2022): 1–11. https://doi.org/10.5281/zenodo.7631831.
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To meet local and international demand for silk products, six (6) fertilizer management strategies involving green leaf manuring and silk waste composting were evaluated to improve mulberry leaf and silkworm cocoon yields and income at DMMMSU-Sericulture Research and Development Institute, Bacnotan, La Union, Philippines. The treatments were laid out in RCBD with three replications. Mulberry leaf and cocoon yields were gathered, analyzed using ANOVA and means were compared using HSD. Cost return analysis was estimated. Average single leaf weight was significantly higher in fertilized treatments than the control. Growing mulberries in May-July 2014 produced heavier mulberry leaf and biomass yield. Mulberry plants applied with ½ RRN + PK/ha + 5 tons silk waste + 10 tons <em>Katurai</em> leaves during May –July 2014 produced heavier leaf and biomass yields. The different fertilizer treatments did not significantly influence cocoon yields of silkworms. All fertilizer treatments significantly produced higher effective rearing rates and cocoon yield in November-December rearing seasons. The use of ¼ N + PK + 10 tons <em>Katurai</em> leaves + 5 tons silk wastes, and 10 tons <em>Katurai</em> leaves + 5 tons silk wastes alone are promising fertilizer management options to increase farm yields and income. Published by the <strong>Journal of Biodiversity and Environmental Sciences | JBES</strong>
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Isichenko, N. V., V. M. Litvin, G. I. Babayeva, B. T. Stegniy, O. V. Dmitriyeva, and I. I. Degtyar. "NEW PARTNENCLONES OF BOOMBYX MORI L. FROM THE COLLECTION OF GENETIC RESOURCES OF UKRAINE." Animal Breeding and Genetics 57 (April 24, 2019): 159–64. http://dx.doi.org/10.31073/abg.57.19.
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The purpose of the research is to investigate the ability to heat the parthenogenesis of new breeds silkworm T–1, T–2, D–1 silkworm breeds and to establish the reproductive, biological and technological parameters of the T–1clone, T–2clone and D–1clone created on their basis.
 Materials and methods of research. The research was conducted on the basis of the laboratory of silkworm and technical entomology of the National Scientific Center "Institute of Experimental and Clinical Veterinary Medicine" during 2016–2018.
 For the study of the ability of new breeds of silkworm D–1, T–1, T–2 to the thermal parthenogenesis, the females of the aforementioned silkworms were used. Activation of the gravel to ameiotic parthenogenesis (complete thermal pathogenesis) was carried out using the method B. L. Astaurov
 The reproductive parameters of parthenoclon were studied: the ability to parthenogenesis (%), the total number of eggs (pieces), the weight of one egg (mg), the output of caterpillars from eggs (%).
 The economic-valuable and technological indicators of the created clones were investigated: viability of caterpillars (%), cocoon yields of 1 g of caterpillars (kg), silkworm cocoons (%), cocoon mass (g), length of filaments (m), length of continuous- unwound thread (m), raw silk output (%).
 The main results obtained. It is established that the new clones of silkworm silk created by the ability to parthenogenesis are at the control level. In terms of the viability of caterpillars in 2018, they are somewhat inferior to Ukr.28, but according to the results of three years of research, this indicator is at a level, and T–2clone even exceeds control by 4.84% (p < 0,05). Similar results are obtained on the basis of the weight of the cocoon.
 By the cocoon yield, the new Parthenoclon exceeds control in 2018 by an average of 0.44 kg and for three years of research – by 0.50 kg. The indicator of silk worminess of cocoons in T–1clones and D–1clones was at the level of the indicator Ukr.28clones, at T–2clone – was higher than the parameters of part-clones and control at 0.83–2.73%. The length of the thread, the length of the continuously unwound yarn and the output of raw silk is dominated by T–2clone – its values exceed the similar indicators of T–1clone and D–1clone, dominated by control indicators – Ukr.28clones.
 Thus, the new clones of silkworm, adapted to the changed climate in Ukraine, were introduced and evaluated. They can be components for the creation of new clone-breed hybrids with high biological and technological performance. The stands of silkworm hybrids will provide domestic branches of production of organic raw materials for the production of modern products. This will allow import substitution of organic goods for everyday use to our country's inhabitants. Domestic production of organic products in the form of clothing, medical and cosmetic products will provide the work of thousands of compatriots and reduce the cost of goods in comparison with imported ones.
 Prospects for further scientific research are the creation of new clone-breed hybrids with high biological and technological indices for Ukraine.
 Conclusions. 1. Three new high-yield silkworm clones with the optimal combination of silk productivity and ability to ameiotic parthenogenesis, characterized by the following biological indices, are derived: T–1clone – caterpillar livelihood 84.13%, cocoon yield 3.76 kg, cocoon mass 2.30 g, silkiness 21.62%; T–2clone – caterpillars' survivability 88.94%, cocoon yield 4.23 kg, cocoon mass 2.53 g, silicone 24.25%; D–1clone. – The viability of the caterpillars is 85.52%, the cocoons are 4.08 kg, the cocoon mass is 2.41 g, and the silicone content is 21.62%.
 
 The estimation of reproductive indices of created T–1clone, T–2clone and D–1clone clones was made and their ability to heat parthenogenesis was determined. The highest ability to ameiotic parthenogenesis has D–1clone – 72.73%.
 Parthenoclones T–1clone, T–2clone and D–1clone for reproductive characteristics are at the level of the control clone Ukr.28clones and are promising for clone- breed hybridization.
 The technological parameters of the new clones are established: the T–2clone is the leader in the length of the filament (1432m), the length of the continuous unwound yarn (734 m) and the output of raw silk (46.3%) – its parameters exceed the similar indicators in T–1clone and D–1clone at 2.5% and prevail over control indicators – Ukr.28clones – by 5.5%.
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Nuraeni, Sitti, Astuti Arif, and Edwin NL. "Tingkat Serangan dan Kehilangan Hasil Akibat Penyakit Grasserie pada Sentra Persuteraan Alam Sulawesi Selatan." Jurnal Hutan dan Masyarakat 10, no. 2 (2018): 224. http://dx.doi.org/10.24259/jhm.v10i2.4335.
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Grasserie disease is one of the serious diseases caused by viruses. Its symptoms generally appear in the last instar of silkworm larvae or just before the formation of the cocoon. This study aimed to determine the level of attack, yield losses and dispersal patterns of grasserie at three sericulture center in South Sulawesi, Districs (Wajo, Soppeng and Enrekang). At each location 10 farmers were selected purposively as respondents. Direct observation was conducted to the farmer’s rearing rack (on farmer’s rearing bed) of silkworm using five replications. The results showed that the attack rates of grasserie were categorrised as very slight, ranging from 3.06 to 3.72 kgs of yield losses per each box with a uniform pattern of disease spread. Reared of silkworms in accordance with standard operating procedures can reduce the rate of grasserie disease to avoid losing larger cocoon yields.
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Manzoor, Ahmad Malik, Shaheen Kamili Afifa, Nabi Malik Ghulam, et al. "Studies on the Joint Impact of Mulberry Cultivation and Sericulture Enterprise as a Scheme for Border Area Development Programme in Kashmir, India." Advanced Materials Research 175-176 (January 2011): 41–45. http://dx.doi.org/10.4028/www.scientific.net/amr.175-176.41.
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With the Development of New Technologies in Silkworm Rearing though Sericulture Has now Emerged as a Main Profession and a Major Cash Crop for the Rural People of the India in Tropical Areas but in Temperate Belt Like Kashmir the Constraints Faced by the Sericulture Farmers/silkworm Rearers Are More and these Are Responsible for Yield Gaps which Have to Be Considered Seriously and Accordingly the Extension Services Need to Be Modulated and Implemented. Exploitable Yield Gaps in Border Areas Are Often Caused by Various Factors Including Physical, Biological, Socio-Economic and Institutional Constraints which Can Be Effectively Improved through Participatory and Holistic Approaches. Kashmir Is a Univoltine Area where for Generations only one Crop in Spring Season Is Taken between May and June. Spring (May – June, 2009) Data of Kandi Kupwara J&K India (Border Area) Revealed Varying Cocoon Yields from 7 to 13 Kgs Dry Cocoons per 100 DFLS with Cocoon Price Varying from Rs. 172-430 per Kg. these Facts and Figures Prove that these Silkworm Rearers by Realizing the Potential of Sericulture (a New Culture in a Border Area) Increased their Income Substantially from Rs. 720 to Rs.5590/100DFLS. it Was Also Found that Sericulture Productivity Can Be Further Increased by Planting Improved Varieties of Mulberry as it Has Been Observed that where, Very Good Quality Mulberry Leaf and Inputs Are Available, the Sericulture Productivity Is Reasonably Good. the Present Communication, Therefore, Discusses the Extension Strategies and New Technologies to Improve the Essential Knowledge and Skills to the Sericulture Farmers to Improve the Yield and Profitability of Sericulture.
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Dieckmann, M. E., D. Folini, I. Hotz, et al. "Structure of a collisionless pair jet in a magnetized electron–proton plasma: flow-aligned magnetic field." Astronomy & Astrophysics 621 (January 2019): A142. http://dx.doi.org/10.1051/0004-6361/201834393.
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Aims. We study the effect a guiding magnetic field has on the formation and structure of a pair jet that propagates through a collisionless electron–proton plasma at rest. Methods. We model with a particle-in-cell (PIC) simulation a pair cloud with a temperature of 400 keV and a mean speed of 0.9c (c - light speed). Pair particles are continuously injected at the boundary. The cloud propagates through a spatially uniform, magnetized, and cool ambient electron–proton plasma at rest. The mean velocity vector of the pair cloud is aligned with the uniform background magnetic field. The pair cloud has a lateral extent of a few ion skin depths. Results. A jet forms in time. Its outer cocoon consists of jet-accelerated ambient plasma and is separated from the inner cocoon by an electromagnetic piston with a thickness that is comparable to the local thermal gyroradius of jet particles. The inner cocoon consists of pair plasma, which lost its directed flow energy while it swept out the background magnetic field and compressed it into the electromagnetic piston. A beam of electrons and positrons moves along the jet spine at its initial speed. Its electrons are slowed down and some positrons are accelerated as they cross the head of the jet. The latter escape upstream along the magnetic field, which yields an excess of megaelectronvolt positrons ahead of the jet. A filamentation instability between positrons and protons accelerates some of the protons, which were located behind the electromagnetic piston at the time it formed, to megaelectronvolt energies. Conclusions. A microscopic pair jet in collisionless plasma has a structure that is similar to that predicted by a hydrodynamic model of relativistic astrophysical pair jets. It is a source of megaelectronvolt positrons. An electromagnetic piston acts as the contact discontinuity between the inner and outer cocoons. It would form on subsecond timescales in a plasma with a density that is comparable to that of the interstellar medium in the rest frame of the latter. A supercritical fast magnetosonic shock will form between the pristine ambient plasma and the jet-accelerated plasma on a timescale that exceeds our simulation time by an order of magnitude.
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Salimdzhanov, S., N. Bekirov, G. Bekirov, et al. "Study of the Yield of Dry Cocoons from Living ones Depending on Silkiness." Bulletin of Science and Practice 11, no. 1 (2025): 248–53. https://doi.org/10.33619/2414-2948/110/28.
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. It is known that one of the main factors of the modern problem of cocoon-winding production is: the low level of cocoon cultivation in the agricultural sector, the imperfection of thermophysical and technological processes in the operation of existing equipment for the primary processing of cocoons, due to the lack of scientifically based work in this direction. With modern factory cocoon reeling, it is almost impossible to unwind all the cocoons harvested during the season in a short period of time. To provide cocoon reeling factories with raw materials for year-round operation, it is necessary to protect the cocoon shells from damage by butterflies, i.e., it is necessary to preserve the cocoons, preventing the pupae from developing into butterflies. To do this, you need to either store the cocoons in conditions that exclude (or inhibit) the process of turning pupae into butterflies, or kill the pupae in the cocoons. The most common is the second method, called pickling cocoons.
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Daney de Marcillac, Willy, Lien Thi Phuong Nguyen, Camille Aracheloff, Serge Berthier, and Bernd Schöllhorn. "Bright green fluorescence of Asian paper wasp nests." Journal of The Royal Society Interface 18, no. 181 (2021): 20210418. http://dx.doi.org/10.1098/rsif.2021.0418.
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An exceptionally bright fluorescent biomatter was discovered when exploring, with UV-A light, the nests of several oriental paper wasp species of the genus Polistes , a genus of diurnal social insects. Fluorescence spectra of the cocoon cap membranes revealed narrow emission bands in the green range of the visible spectrum. Large Stokes shifts of around 160 nm and high fluorescence quantum yields of up to 35% were measured. Transmission spectra were recorded in order to estimate the contribution of the fluorescence to the visible light transmitted through the cocoon cap membrane. The nest fluorescence of the Vietnamese wasps was compared with a European and an American species. Potential biological functions of these interesting fluorescence properties of the studied biomaterial are discussed. The discovery of this striking example of a fluorescent terrestrial biomaterial may contribute to the debate on adaptive biological functions of natural fluorescence and falls in line with the growing interest in biodiversity and bio-inspiration.
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Gedam, Pravin C., Datta M. Bawaskar, and T. Selvakumar. "Impact of Adoption of Improved Tasar Silkworm Rearing Technologies on Cocoons Production of Tasar Silkworm Anthereae mylitta D in Maharashtra." Asian Journal of Agricultural Extension, Economics & Sociology 41, no. 10 (2023): 814–25. http://dx.doi.org/10.9734/ajaees/2023/v41i102229.
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Tasar culture is being practiced in Maharashtra since last 200 years by the tribal folks of four eastern districts of the state. However, the productivity of tasar cocoons in the state is hovering around average of 2000-4000 cocoons/100 Dfls (Disease Free layings) throughout the year against the norm of 6000 cocoons which might be due to the non-adoption or low adoption of improved tasar rearing technologies by the tasar silkworm rearers. Thus, present study was conducted to investigate the impact of adoption of improved tasar silkworm rearing technologies as a strategy for improving tasar cocoon production in the state. For the study, an “Ex Post Facto” research designed was used and 50 adopted seed cocoon rearers and 50 non-adopted seed cocoon rearers were selected through random sampling method. The results of the study showed that, during the Ist Crop of Daba TV rearing, the average cocoon yield of the farmers who have adopted the tasar silkworm rearing technologies ranged from 2907 to 3612 cocoons per 100 dfls while in case of non-adopter it ranged from 2316 to 2616 cocoons per 100 dfls. The overall improvement in cocoon yield in the technology adopted lots over that of control lot was ranged from 26.58 to 32.08 per cent. Similarly, during IInd crop rearing of Daba TV, the cocoon yield of the farmers who adopted the technology ranged from 3126 to 4123 cocoons per 100 dfls while in the control, it ranged from 2639 to 3493 cocoons per 100 dfls with the overall improvement ranged from 11.80 to 20.29 per cent. Moreover, during IIIrd crop rearing of Daba TV, the cocoon yield of the farmers who adopted the technology ranged from 5322 to 6487 cocoons per 100 dfls compared to non- adopted of technologies which ranged from 4006 to 5213 per 100 dfls. The paired t test showed that there was a significant improvement in cocoon yield due to the adoption of the improved tasar silkworm rearing technology by the adopted seed cocoon rearers in all three crops of Daba TV eco-race. Also, a significant improvement was noticed in the cocoon and shell weight in all the three crops of Daba TV. The study suggests that the effective technology transfer strategies should be developed and implemented in the state coupled with the suitable training programs so as to convince farmers about the benefits of adoption improved tasar silkworm rearing technologies.
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Khikmatullayevich, Karimov Ravshan. "Study of Factors Affecting the Technological and Physicochemical Properties of Cocoons." International Journal of Advance Scientific Research 5, no. 4 (2025): 49–56. https://doi.org/10.37547/ijasr-05-04-07.
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In this article, local varieties of cocoons are studied for factors affecting physicochemical properties. The results of the research work on the topic are presented. Within the framework of the research, the linear density of cocoon threads and the live and dry technological indicators of cocoons were studied by single unwinding of cocoon threads on the laboratory single-opening machine of Ozttiti. According to the results of the cocoon study, the number of cocoons was determined, silkworm breeds and hybrids with large cocoon sizes and high silk yield were selected, and specific recommendations were developed for the multiplication of industrial seeds and specialization in cocoon cultivation in the regions of silkworm production and sericulture clusters, as well as the introduction of its technology.
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Tulu, Dereje, Melkam Aleme, Gezahegn Mengistu, Ararsa Bogale, Kedir Shifa, and Esayas Mendesil. "Evaluation of Castor (Ricinus communis L.) Genotypes and Their Feeding Values on Rearing Performance of Eri Silkworm (Samia cynthia ricini Boisduval) (Lepidoptera: Saturniidae) in Southwest Ethiopia." Psyche: A Journal of Entomology 2022 (October 3, 2022): 1–7. http://dx.doi.org/10.1155/2022/1556776.
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The quality of feed plays an important role in the growth and development of silkworms and eventually in the economic traits of cocoons. This study was conducted to evaluate ten castors (Ricinus communis L.) genotypes and their feeding values on the rearing performance of Eri Silkworm (Samia cynthia ricini Boisduval) (Lepidoptera: Saturniidae) at Tepi, southwest Ethiopia. A total of ten castor genotypes were evaluated in a randomized complete block design (RCBD), and the suitability of castor genotypes as feed for a mixed strain of Eri-silkworm was also evaluated in a completely randomized design (CRD) under laboratory conditions. A hundred worms were used in each replication. Castor genotypes showed significant differences in fresh leaf yield. Among the castor genotypes tested, genotype 219645 recorded 439 g of ten fresh leaf yields. Results of Eri-silkworm rearing performance depict that a shorter larval period (22 days), a higher effective rate of rearing (94.54%), and a shorter life cycle (58 days) were observed in Eri-silkworm fed on leaves of the 200390 genotype, while a higher larval weight (6.16 g) was recorded in the Abaro genotype. However, higher cocoon weight (3.26 g), pupal weight (2.46 g), shell weight (0.45 g), and silk ratio (13.80%) were found in Eri-silkworms fed on leaves of genotype 219645. Hence, based on silkworm rearing performance, genotype 219645 showed relatively superior results and is recommended for future development work. Further studies should continue giving more emphasis to the multilocation study of genotype 219645 to understand its performance in the diverse growing environment.
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İbrahim qızı Məhərrəmova, Vəfa. "Results of studyıng the effect of feed qualıty of ıntroduced multıple varıetıes on technologıcal ındıcators of cocoon." NATURE AND SCIENCE 12, no. 07 (2021): 22–25. http://dx.doi.org/10.36719/2707-1146/12/22-25.
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The article provides information on the technological features of cocoons obtained from silkworms fed on the leaves of mulberry varieties imported from different countries. We are talking about raw silk yield, total length of cocoon wire, metric number of silk thread, dry cocoon yield from live cocoon, raw silk yield indicators. These indicators may differ depending on the hereditary characteristics of different varieties. Keywords: Mulberry, sort, introduction, cocoon, raw silk yield, silkiness, metric number
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İbrahim qızı Məhərrəmova, Vəfa. "Results of studyıng the effect of feed qualıty of ıntroduced multıple varıetıes on technologıcal ındıcators of cocoon." NATURE AND SCIENCE 12, no. 07 (2021): 22–25. http://dx.doi.org/10.36719/2707-1146/12/22-25.
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The article provides information on the technological features of cocoons obtained from silkworms fed on the leaves of mulberry varieties imported from different countries. We are talking about raw silk yield, total length of cocoon wire, metric number of silk thread, dry cocoon yield from live cocoon, raw silk yield indicators. These indicators may differ depending on the hereditary characteristics of different varieties. Keywords: Mulberry, sort, introduction, cocoon, raw silk yield, silkiness, metric number
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Gulamov, Azamat, Komil Avazov, and Bekzod Abrayqulov. "Studying the effect of drying technology on silk cocoon shell and chrysalis features." E3S Web of Conferences 304 (2021): 03039. http://dx.doi.org/10.1051/e3sconf/202130403039.
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This article proposes the influence of the cocoon drying technology on the properties of the shell and pupa of the silkworm. We also analyzed the change in the initial weight of the cocoons treated at different temperatures, the microscopic view of the cocoon shells. Cocoons grown at different times of the year were taken as the object of the study. As a result of the treatment of the cocoon pupa with an infrared ray, hot air and chemical methods, the yield, color properties and solubility of the cocoon shell were compared and analyzed.
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Luan, Yue, Weidong Zuo, Chunlin Li, et al. "Identification of Genes that Control Silk Yield by RNA Sequencing Analysis of Silkworm (Bombyx mori) Strains of Variable Silk Yield." International Journal of Molecular Sciences 19, no. 12 (2018): 3718. http://dx.doi.org/10.3390/ijms19123718.
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Silk is an important natural fiber of high economic value, and thus genetic study of the silkworm is a major area of research. Transcriptome analysis can provide guidance for genetic studies of silk yield traits. In this study, we performed a transcriptome comparison using multiple silkworms with different silk yields. A total of 22 common differentially expressed genes (DEGs) were identified in multiple strains and were mainly involved in metabolic pathways. Among these, seven significant common DEGs were verified by quantitative reverse transcription polymerase chain reaction, and the results coincided with the findings generated by RNA sequencing. Association analysis showed that BGIBMGA003330 and BGIBMGA005780 are significantly associated with cocoon shell weight and encode uridine nucleosidase and small heat shock protein, respectively. Functional annotation of these genes suggest that these play a role in silkworm silk gland development or silk protein synthesis. In addition, we performed principal component analysis (PCA) in combination with wild silkworm analysis, which indicates that modern breeding has a stronger selection effect on silk yield traits than domestication, and imply that silkworm breeding induces aggregation of genes related to silk yield.
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Həmzə oğlu Hacıyev, Mahir, and Vəfa İbrahim qızı Məhərrəmova. "Study of feed quality and biological indicators of varietal feeding of newly created different ploidy mulberry varieties." SCIENTIFIC WORK 68, no. 07 (2021): 7–11. http://dx.doi.org/10.36719/2663-4619/68/7-11.
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The article clarifies the effect of the leaves of various newly created ploidy mulberry varieties on the productivity of mulberry silkworms, as well as on the biological parameters of silkworms. New varieties are described by conducting varietal feeding to determine the feed quality of varieties by providing information on leaf yield and the leaf yield of newly created varieties, by studying the biological parameters of varietal feeding, by determining the average mass of alive cocoons, silkness%, cocoon yield. Keywords: mulberry, sort, leaf yield, silkiness, viability, average weight of cocoon, cocoon product
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K. Nanda Kiran, Kumari Ayush, Kishore V.M, Vinod Kumar Malkapure, Dr. Pavithra G, and Dr. T.C.Manjunath. "SILKBOT : Orchestrating Silk Symphony - A Comprehensive Approach towards Silk Production and Enhancement in Sericulture Applications." international journal of engineering technology and management sciences 7, no. 6 (2023): 17–22. http://dx.doi.org/10.46647/ijetms.2023.v07i06.004.
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In this paper, the orchestrating of the silk symphony - a comprehensive approach towards silk production and enhancement in sericulture applications is presented. The final year project work undertaken by us involves the design & development of a silkbot, which will give us the comprehensive approach towards Silk Production and Enhancement in the quality of silk produced. The aim of the project is to revolutionize silk production through a comprehensive approach encompassing four critical components that are Segregation of cocoon based on gender, Identification of diseased cocoons to curb disease spread and enhance yield, maintenance of ideal temperature conditions for the enhanced growth of cocoons and Maintenance of optimal feeding conditions tailored to cocoon growth and needs. Cocoon Segregation System - Focuses on the segregation of cocoons based on their genders which will be ensuring optimal silk production and controlled environment for the female cocoon who produce more raw silk than male and prevent Disease Spread. Diseased Cocoon Identification - Aims to implement an automated system for the identification of diseased cocoons, mitigating the spread of diseases that can significantly impact yield and harvest rates. Temperature Control System - Emphasizes the maintenance of ideal temperature conditions for the enhanced growth of Silkworms, optimizing the quality and quantity of silk production. Optimized Feeding System -Tailored feeding based on the growth stages and nutritional needs of the Silkworms for optimal silk production. The work carried out is the seventh semester main-project by the students of Electronics & Communication Engineering under the guidance of the faculties supervision (guide).
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Faradilla, Faradilla, Emi Malaysia, Adelia Juli Kardika, and Arini Rajab. "Budidadya Ulat Sutera dengan Pemberian Pakan Daun Murbei Hasil Kultur In Vitro Terhadap Kualitas Kokon dan Benang Sutera." ULIN: Jurnal Hutan Tropis 6, no. 1 (2022): 1. http://dx.doi.org/10.32522/ujht.v6i1.5833.
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The Samarinda silk sarong is a typical Samarinda sarong made using imported silk yarn raw materials from China. Quality mulberry plants are needed to support silkworm cultivation (sericulture). Quality mulberry plants obtained by in vitro propagation techniques. The purpose of this study was to determine the differences in the quality of cocoons and silk threads by feeding in vitro and cuttings. The research stages consisted of rearing silkworms, handling cocoons and spinning. The results showed that mulberry propagated by in vitro culture as feed for silkworms for all observation variables was better than mulberry propagated by cuttings. For the variables of cocoon shell weight, cocoon shell presentation, filament length and filament yield, the results were significantly different, except for the variables of fresh cocoon weight and dry cocoon weight which were not significantly different.
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Edwina, V. Garcia. "Establishment of seed cocoon area in Pugo, La Union, Philippines: A strategy for a viable sericulture industry." Journal of Biodiversity and Environmental Sciences (JBES) 24, no. 4 (2024): 53–61. https://doi.org/10.5281/zenodo.14600319.
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Sericulture is a promising business with multi-disciplinary programs that grow sustainably and give farmers a source of income. It involves mulberry cultivation, silkworm rearing for cocoon production, and raw silk production. The Philippine Sericulture industry has great expansion potential, particularly cocoon production. Seed cocoon production is vital in sericulture as it provides quality silkworm eggs for commercial purposes. The Pugo Sericulture Project was selected by the DMMMSU-Sericulture Research and Development Institute as a seed cocoon area. The project’s goal is to showcase the effectiveness of the Pugo Sericulture Project to demonstrate a package of technologies on mulberry leaf production, silkworm rearing management, and seed cocoon production; adopt and implement the best practices in producing seed cocoons; and evaluate the productivity and profitability of seed cocoon production. Silkworm purelines (DMMMSU 100, DMMMSU 101 & DMMMSU 102) and F<sub>1</sub> hybrids (DMMMSU 201, DMMMSU 215, DMMMSU 216, DMMMSU 209 & DMMMSU 226) were reared and tested based on qualitative characters such as effective rearing rate, single cocoon weight, shell percentage, pupation rate, and hatching percentage; and quantitative characters like cocoon yield, number of cocoons per kilogram, filament length, fecundity, and the number of silkworm eggs per gram. Based on an eight-year rearing period, the farmer-cooperator produced a total of 327.35 kg of seed cocoons from 13.5 boxes of parental silkworm larvae reared, earning Php 49,489.00, with a net income of Php 5,552.47 and an average return on investment of 13.98%. published by the <strong>Journal of Biodiversity and Environmental Sciences (JBES)</strong>
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Batirova, Aziza, and Shavkat Umarov. "Appearance of biological and productivity indicators of foreign breeds and hybrids of bombyx mori l. propagated in seed enterprises in different conditions." E3S Web of Conferences 371 (2023): 01026. http://dx.doi.org/10.1051/e3sconf/202337101026.
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At the global level, special attention is paid to the care of the mulberry silkworm Bombyx mori L. in different climatic conditions, the adaptation of monovoltine breeds and hybrids to different ecological regions, and the production of high-quality raw silk that meets the requirements of the international standard 2A, 3A, 4A. being directed. Today, creating a new generation of mulberry silkworm breeds and hybrids and improving the technological properties of cocoons and silk raw materials obtained from them, determining the effects of various environmental factors and objectively evaluating the physical and mechanical properties of cocoons are considered as urgent problems on a global scale. Currently, some of the mulberry silkworm seeds, which are not enough for farms in our country, are imported from the People's Republic of China. The economic value of these imported elite and industrial hybrids, namely silkworm egg viability, worm viability, length of larval larval period, biological factors such as mulberry silkworm, cocoon and shell weight, cocoon yield, silkiness and cocoon productivity such as fertile and non-fertile cocoons. It is scientifically based on the extent to which the natural climatic conditions of the regions of Uzbekistan affect productivity indicators such as percentage, dry weight of cocoons, percentage of defective cocoons.
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Hazarika, Dibya Jyoti, Kaiwara Manjuntha Gowtham Patil, Mahadevegowda Likhith Gowda, Keeranagere Jagadeesh, and Hosaholalu Boregowda Manjunatha. "New Bivoltine Hybrids of the Silkworm (Bombyx mori L.) Performance at Farmer’s Site." International Journal of Environment and Climate Change 13, no. 11 (2023): 4695–701. http://dx.doi.org/10.9734/ijecc/2023/v13i113648.
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The rise in atmospheric temperature, due to global warming, offers a great challenge to make a successful cocoon harvest, as it not only affects the progression of the larvae but also leads to outbreak of diseases. Thus, silkworm breeds have potential to thrive well under such harsh fluctuating climatic conditions without sacrificing commercial traits of cocoon and silk are in-need. Towards this, new bivoltine breeds developed employing heat shock technology, for the first time, were used to develop four bivoltine double hybrids (NBH1 × FC1, NBH2 x FC1, FC1 x NBH1, and FC1 x NBH2) and two poly hybrids (PM x NBH1 and PM x NBH2) and subjected to evaluation for their performance at the farmer's site. Notably, all four double hybrids distributed to farmers performed very well with substantial cocoon yield. Among them, NBH1 x FC1 and NBH2 x FC1 were outperformed with their high fecundity (675 and 700 eggs/dfl) and cocoon yield of 549 and 228 kg, out of 579 and 225 dfls reared by the farmers respectively. On the other hand, 360 and 248 kg of cocoons were harvested as against a total of 325 dfls and 250 dfls of PM x NBH1 and PM x NBH2 distributed to farmers. Eventually, all the farmers were delighted to rear these new double hybrids and poly hybrids, as it fetched a good price to sell the cocoons. Thus, we suggest all these new double hybrids and poly hybrids shall be used for large-scale silkworm rearing in the field conquering the climate change threat to produce both qualitatively and quantitatively better cocoons and silk that shall protect the wealth of Seri-farmers and silk reelers
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KANNIHALLI, SALEEMALI, S. G. RAYAR, C. P. MALLAPUR, P. V. PATIL, and RAVIKUMAR HOSAMANI. "Nanoparticles supplementation through foliar feed contributed to the growth and cocoon yield of silkworm (Bombyx mori)." Indian Journal of Agricultural Sciences 94, no. 10 (2024): 1118–24. http://dx.doi.org/10.56093/ijas.v94i10.147278.
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An experiment was conducted during 2021–22 and 2022–23 at University of Agricultural Sciences, Dharwad, Karnataka to study the effect of metal nanoparticles on silkworm (Bombyx mori) growth and cocoon yield. The experiment was laid out in completely randomized design (CRD) comprised of 11 treatments with 3 replications. The various concentrations (50, 100 and 200 ppm) of nanoparticles, viz. nano silver, nano zinc and nano copper were extrafoliated to mulberry leaves and were administered to silkworms daily once at morning (first feed) from second day of fifth instar. The study revealed that, silver nanoparticles at 200 ppm concentration emerged as the best supplement with improved larval, cocoon and silk parameters by recording shorter larval duration (616.42 h), fifth instar duration (166.12 h), higher mature larval weight (40.626 g/10 larvae), effective rate of rearing (97.58%), silk productivity (6.225 cg/day), silk gland weight (1.885 g/larva), pupal weight (13.757 g/10 pupae), cocoon yield (794.85 g/dfl), cocoon weight (18.102 g/10 cocoons), shell weight (4.307 g/10 shells), cocoon shell ratio (23.79%), cocoon filament length (948.52 m), finer denier (2.75 d), highest fibroin (80.23%) and lowest sericin protein (19.78%).
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Cahangir oğlu Poladov, Fövzü, and Təranə Nazim qızı Hacıyeva. "Significance of mulberry plants in providing the food securrty in Azerbaijan." NATURE AND SCIENCE 11, no. 06 (2021): 18–23. http://dx.doi.org/10.36719/2707-1146/11/18-23.
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In this article briefly consisted history development maricultural and estimate his significance as irreplace feed in production cocoons and also as fruiter plants. The information what yield cocoon and silk the obtained from feeding the mulberry silkworms the mulberry leafs have exceptionally meaning as for satisfaction inside necessity, so and production exported fixing. Simultaneously recount about significance application of fruit mulberry as fresh and treatment appearance the create food abundance, also the treatment some disease. The give information a bit quantity fruit yield saccharined, acidity and vitamin C in collective fruit. Key words:mubery, variety, farm, cocoon, silk, leaf, collective fruit, biochemical composition
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Bu, Chunlan, Rui Zheng, Gaiqun Huang, et al. "The differences in cocoon and silk qualities among sex-related mulberry and silkworm feeding groups." PLOS ONE 17, no. 6 (2022): e0270021. http://dx.doi.org/10.1371/journal.pone.0270021.
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Sexual dimorphism is seen in many dioecious plant and animal species, which may influence their trophic interactions. The differences in trophic interactions derived from sexual dimorphism in plants may influence herbivorous performance and population dynamics. Both silkworm (Bombyx mori L.) and mulberry (Morus alba L.) usually exhibit sexual dimorphism. However, few studies have been conducted on the effect of sex-related silkworm and mulberry pairings on cocoon and silk qualities, which are crucial in sericulture. Here, we compared the differences in cocoon and silk qualities under four feeding combinations (FS-FL: female silkworm fed with leaves from female mulberry trees; MS-FL: male silkworm fed with leaves from female mulberry trees; FS-ML: female silkworm fed with leaves from male mulberry trees; MS-ML: male silkworm fed with leaves from male mulberry trees). The results showed that silkworms exhibited male-biased herbivory with more male mulberry leaves digested. The FS-ML group had higher silk weight and silk ratio of fresh cocoons than the FS-FL group, and the MS-ML group had lower coarse points than the MS-FL group. Compared with groups FS-ML and FS-FL, both MS-FL and MS-ML had smaller cocoons with longer silk lengths and a higher silk ratio of the fresh cocoons. In addition, the Entropy Weight-TOPSIS method showed the cocoon quality rank as FS-ML > FS-FL > MS-FL > MS-ML, whereas silk quality rank was MS-ML > FS-FL > FS-ML > MS-FL. These results indicate that the quality of cocoon and silk is related to the interaction of silkworm and mulberry at the sex level. Furthermore, female silkworms fed with female and male tree leaves have a higher total yield in cocoon production, while male silkworms fed with male tree leaves produced higher silk quality.
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Mirzakhodzhaev, A. M., B. A. Mirzakhodzhaev, D. Kh Kasimova, and I. B. Radzhabov. "INFLUENCE OF THE PATTERN OF DIVIDING SILKWORM COCOONS BY CALIBER AND MASS WHEN SELECTING THEM FOR A TRIBE." TAURIDA HERALD OF THE AGRARIAN SCIENCES 4 (24) (November 2020): 122–34. http://dx.doi.org/10.33952/2542-0720-2020-4-24-122-134.
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All industrial sericulture is based on the feeding of industrial hybrids. The grain (silkworm eggs) for them is prepared at the breeding enterprises. In the production of high-quality hybrid grain, it is very important to select the most homogeneous fraction from the mixture of breeding cocoons and divide this part by sex with high accuracy, so that the females of one breed are crossed with the males of another and vice versa. It is known that the cocoons of the average fraction (caliber and mass) in the breeding party are the most productive. The purpose of this work was to identify the most informative criteria for selecting the qualitative fraction of breeding cocoons; study the main patterns of variation of cocoons by diameter, quantitative ratios divided into fractions by the caliber of cocoons, and the separability of a mixture of cocoons into components by caliber and weight; based on the revealed regularities, develop some new devices designed for sorting cocoons by caliber and dividing them by mass (sex) in the process of preparing hybrid silkworm grain. By the method of mathematical statistics, the regularities of division of the mixture of breeding cocoons by caliber and weight are revealed. The normalized proportion of the average cocoons fraction of 58–70 % and its range of caliber – 2 mm was determined. The possibility of maximum separation of defective components with small and large fractions from the batch in two stages when sorting cocoons by caliber and mass on the developed devices was revealed. According to the results of production feedings, more cocoon yield was obtained (on average, by 10 kg per box (29 g) of grain). Moreover, there were more uniform and varietal cocoons (22 % and 13 % more than in the control variant, respectively). According to the results of unwinding, the total and continuously unwinding length of the cocoon thread in the experimental cocoons is, respectively, 20 and 27 % higher than in the control ones.
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Banu, Priya G. M1* and Doreswamy C2. "IMPACT OF LEGUME MULCHING ON TREE MULBERRY AND REARING PERFORMANCE OF SILKWORM Bombyx mori L." Multilogic in science XIII, no. XXXXVI (2023): 746–50. https://doi.org/10.5281/zenodo.7885658.
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Study on the effect of legume mulching on growth, yield and quality of tree mulberry was carried out during the year 2021 at KVK, V. C. Farm, Mandya. Significantly higher plant height (281.40 cm), shoot length (190.53 cm), number of shoots plant-1 (25.60), number of leaves plant-1 (391.93) and leaf yield (83.42 tons ha-1 year-1) were recorded in tree mulberry plot incorporated with black gram crop residue over non mulched plot. Quality parameters viz., leaf nitrogen content (4.28 %), phosphorous content (0.56 %), potassium content (2.93 %), sulphur content (0.85 %) and crude protein content (26.60 %) were registered higher in black gram residue incorporated plot whereas, calcium and magnesium contents (1.28 % and 0.68 %, respectively) were found to be higher in cowpea residue incorporated tree mulberry plot over plot without mulching. Rearing parameters of double hybrid silkworm viz., fifth day of fifth instar larval weight (41.73 g/10 larvae), cocoon weight (26.01 g/10 cocoons), pupal weight (19.69 g/10 pupae), cocoon shell weight (6.12 g/10 shells), cocoon shell ratio (23.53 %), single cocoon filament length (1277. 17 m) and filament denier (3.53) were recorded significantly higher in case of tree mulberry plot incorporated with black gram residue over control.
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Bekkamov, Ch, and S. Samatova. "Impact of temperature variations in worm containers and nutrition amount on silk glands and silk productivity." IOP Conference Series: Earth and Environmental Science 1142, no. 1 (2023): 012065. http://dx.doi.org/10.1088/1755-1315/1142/1/012065.
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Abstract During the feeding of mulberry silkworms, when the temperature in the larvae fluctuates sharply and the amount of nutrients fed is below or above the norm, the metabolism and physiological processes in the body are disrupted. As a result, the silk cocoon water balance, respiration, digestion and absorption of nutrients are impaired, the activity of the silk glands is impaired, creating conditions for disease-causing microorganisms. In this case, the growth of silkworms by 4 times less when the worms are fed with 50% of the norm, reducing the amount of silk in the cocoon, as the larvae survive without healthy development and the productivity of the cocoons grown. This results in a 20.0% reduction in its average weight and a 23.3% decrease in the weight of the shell. At the same time, on farms where mulberry leaves are in short supply, the cocoon yield per box of worms is 15-30 kilograms, and the quality is 14% lower. This is due to the fact that the growth of mulberry silkworms as a result of the inability of the silk gland to accumulate enough silk fluid due to underdevelopment and the satiety of the mulberry leaf significantly affect the activity of the silk gland. Feeding silkworms with high-nutrient varieties of mulberry leaves increased silkworm size by 6.9-10.1%, viability by 2.5%, total cocoons, yield by 4.5%, yield by 8 kg. In particular, a sharp change in the air temperature of the worm relative to the norm (25-26 °C) weakens the activity of the silk gland due to disruption of the growth and development process of worms. Due to the reduction of the amount of silk liquid synthesized, the viability of worms is 6.5%, the weight of the cocoon is 61.5-64.4%, the weight of the silk shell is 73.7-74.5%, the yield is 8-10 kg, and the variety is 6-12%. decrease has been scientifically proven.
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Lalitha, N., H. Hridya, and P. Borpuzari. "Phenology of Eri silkworm Samia ricini (Donovan) in Lower Assam and its impact on upscaling eri seed production." Journal of Environmental Biology 44, no. 3(SI) (2023): 458–63. http://dx.doi.org/10.22438/jeb/44/3(si)/jeb-19.
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Aim: A phenology study on the seed cocoon rearing performance of Samia ricini (Donovan) in different seasons of Lower Assam and subsequent production of disease-free laying was undertaken. Methodology: In each season, four batches of seed cocoon rearing were conducted on eri silkworms of Borduar race (n=100 dfls) which were reared only on the castor, the primary host plant, to eliminate the variability due to different host plants. The data on different seed cocoon rearing and reproductive parameters were recorded for every rearing and pooled season-wise for comparison. Results: The highest seed cocoon yield per dfl was recorded during autumn (215.92±6.24 nos) followed by winter/spring and late monsoon seasons. During autumn, significantly higher ERR% (90.69±1.01) was observed. Grainage operations conducted on the seed cocoons of various seasons revealed ideal dfl to cocoon ratio during autumn (1:3.5) and late monsoon (1:4.2). The percentage of moth emergence was significantly high in autumn (92.27± 2.90), followed by late monsoon (89.07± 5.38). Interpretation: Results evidently indicated that late monsoon and autumn seasons spanning from September to November months can be utilized effectively for large scale eri silkworm seed production in Assam. Key words: Eri silkworm, Phenology, Reproductive performance, Samia ricini, Seed cocoon rearing
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Guncheva, R. "Influence of the cocoons fluorescent characteristic on the productivity of silkworms, Bombyx mori L., reared on artificial diet." Agricultural Science and Technology 17, no. 2 (2025): 40–46. https://doi.org/10.15547/ast.2025.02.018.
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Abstract. Establishing the relationship between the productivity of silkworms Bombyx mori L. and the fluorescence of silk sheaths was the aim of the present work. The study was conducted at the educational and experimental base of the Department of Sericulture at the Faculty of Agriculture of Trakia University – Stara Zagora during the period 2021 – 2022. The cocoons used for the purposes of the study were obtained from individuals of breed "1A", reared on an artificial diet (25% mulberry flour). For the purposes of the study, the cocoons were divided into two experimental groups according to the type of fluorescence of the silk sheaths (violet and yellow) when exposed to ultraviolet (UV) rays with a wavelength in the range of 254-365 nm. The results obtained show that fluorescence has an impact (p≤0.05 - 0.001) on some quantitative and qualitative cocoon characteristics. Individuals with violet fluorescence of the cocoons generally demonstrate better technological traits of the products obtained from them – by 9.85% (♀) and 1.13% (♂) better unwindability, by 1.44% (♀) and 1.63% (♂) higher silkiness percentage and by 2.51% (♀) and 0.18% (♂) higher laboratory yield of raw silk compared to cocoons with yellow fluorescence. From the summarized analysis of the data, it can be concluded that the fluorescence of the cocoon is important for the quality of the formed silk sheaths and its determination could be used to improve the productivity of the silkworms.
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Larkina, Elena, Ulug'bek Aqilov, and Klaram Salixova. "CREATING HYBRIDS THAT COMBINE THE PROPERTIES OF HIGH YIELD COCOONS AND HIGH-QUALITY COCOON THREAD IN GENOTYPES." Journal of Science and Innovative Development 3, no. 1 (2020): 79–85. http://dx.doi.org/10.36522/2181-9637-2020-1-10.
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In this article, discusses the possibilities of using heterosis. It is known that industrial sericulture around the world is based on the production of first-generation hybrids for the use of heterosis, which can manifest itself in a variety of ways. The effect of heterosis depends largely on the properties of the breeds used in hybridization. in addition, crossing breeds with different characteristics lead to the emergence of new populations of silkworms, sometimes with previously incongruous properties. In this study, an attempt was made to combine the high yield of cocoons and high-quality cocoon thread in the genotypes of hybrids. Genetic and selection studies in the direction of breeding new breeds and creating silkworm hybrids with high productivity and quality properties of cocoons contribute to increasing the production of grain and cocoons of domestic breeds and hybrids, improving their quality, corresponding to international standards, and thereby increasing the export opportunities of the sericulture industry.
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Singh, Amardev. "Plant based mounting materials use for spinning during seed crop rearing by Adopted Seed Rearers (ASRs)." International Journal of Environment, Agriculture and Biotechnology 9, no. 5 (2024): 218–23. http://dx.doi.org/10.22161/ijeab.95.25.
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Adopted Seed Rearers (ASRs) or P1 seed farmers use locally accessible plants as mounting materials for mounting the matured silkworms under the study they used viz., Dodonaea viscosa, Malotus philipansis, Bambusa nutans, Eucalyptus globulus. Based on the data analysis, significant difference was found when the matured silkworms were mounted on plastic collapsible mountages, which resulted in the highest cocoon yield per 100 dfls (85.45 Kg) and also number of cocoons per kg.
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Kumar, Niraj, Dhananjay Mishra, Seungyeob Kim, et al. "Shape Evolution of Indium Sulfide Heterostructures via Carbon Nanotube Scrambling: Towards Reliable Sustainability and Mitigating Leakage Current in Supercapacitors." Applied Sciences 13, no. 5 (2023): 2958. http://dx.doi.org/10.3390/app13052958.
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For sustainable energy storage devices with long-term endurance, exploring novel electrode materials can be a realistic focus in the areas of robust structures, surface area control, high channel conductivity, and others. A composite of a hierarchical series of single-walled carbon nanotubes (SWNTs) with In2S3 was synthesized by applying a simple one-step solvothermal method. A SWNT scaffold yields a good conductive pathway, leading to the improved electron transportation and catalytic behaviors. This promotes the robust formation of materials and their enhancement in surface activity and specific capacitance. Herein, the nucleated nanocomposites based on SWNT-mediated In2S3 improve the specific capacitance (1268 F·g−1 at 10 mVs−1) to a remarkable 92.4% of its capacitance even after 10,000 cycles, and furthermore, the robust cocoon-like structure of INS5 (5 mL SWNT doped in In2S3) shows an excellent 97.8% of cyclic retention (10,000 cycles). As a conceptual demonstration of system integration, the as-fabricated symmetric supercapacitor (SSC) device is successfully integrated into the Bluetooth/photoplethysmography (BLE/PPG) module for a wireless sensor network. These findings, through indium sulfides with SWNT scrambling, are expected to contribute to the next-generation solid-state-supercapacitor (SSC)-integrated module in the wireless health monitoring system.
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Akhmedov, Jamalkhon, Jamoliddin Jabborov, Bahtiyar Tadjibayev, Djabbarkhan Akhmedov, Azizbek Rakhimov, and Gavhar Mirkhamidova. "Indicators of valuable economic traits of hybrid F2 generations obtained with the participation of parental forms of different genotypes." E3S Web of Conferences 497 (2024): 03044. http://dx.doi.org/10.1051/e3sconf/202449703044.
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This article provides a comprehensive overview of 29 valuable economic traits observed in F2 hybrids as a result of research conducted in 2022. The study delves into the main economic characteristics of the plants, specifically focusing on key parameters such as the number of cocoons per plant, the weight of one cocoon raw material, the productivity of one plant, the weight of 1000 cotton seeds, fiber yield, and fiber length. It's noteworthy that the research was conducted against the backdrop of CBSPARI's natural wilt-infested conditions. This article presents information on 29 valuable economic traits of F2 hybrids selected as a result of our research conducted in 2022. Here are observations and analyzes of the main economic characteristics of the plant: the number of cocoons per plant, the weight of one cocoon raw material, the productivity of one plant, the weight of 1000 cotton seeds, fiber yield and length. Our research was carried out on CBSPARI's natural wilt-infested background. The choice to conduct the research on a natural wilt-infested background at CBSPARI adds an extra layer of significance, as it reflects the performance of the F2 hybrids under real-world challenges. This research provides valuable insights into the economic potential and adaptability of these hybrids, paving the way for informed decisions in cotton cultivation and breeding.
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Joseph Raj, Alex Noel, Rahul Sundaram, Vijayalakshmi G. V. Mahesh, Zhemin Zhuang, and Alessandro Simeone. "A Multi-Sensor System for Silkworm Cocoon Gender Classification via Image Processing and Support Vector Machine." Sensors 19, no. 12 (2019): 2656. http://dx.doi.org/10.3390/s19122656.
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Sericulture is traditionally a labor-intensive rural-based industry. In modern contexts, the development of process automation faces new challenges related to quality and efficiency. During the silkworm farming life cycle, a common issue is represented by the gender classification of the cocoons. Improper cocoon separation negatively affects quantity and quality of the yield resulting in disruptive bottlenecks for the productivity. To tackle this issue, this paper proposes a multi sensor system for silkworm cocoons gender classification and separation. Utilizing a load sensor and a digital camera, the system acquires weight and digital images from individual silkworm cocoons. An image processing procedure is then applied to extract significant shape-related features from each image instance, which, combined with the weight data, are provided as inputs to train a Support Vector Machine-based pattern classifier for gender classification. Subsequently, an air blower mechanism and a conveyor system sort the cocoons into their respective bins. The developed system was trained and tested on two different types of silkworm cocoons breeds, respectively CSR2 and Pure Mysore. The system performances are finally discussed in terms of accuracy, robustness and computation time.
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Janet, D. Manuel. "Productive Performance of Philippine Silkworm (Bombyx Mori L.) Purelines Fed with Folic Acid-Enriched Mulberry Leaves." International Journal of Biosciences (IJB) 24, no. 1 (2024): 19–27. https://doi.org/10.5281/zenodo.10991400.
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Low silk production has been attributed to the low quality of mulberry leaves fed to silkworms during rearing. Thus, quality of mulberry leaves should be enhanced. This study determined the efficacy of folic acid-enriched mulberry leaves in the performance of silkworms and silkmoth egg production. Fifth instar larvae of the six (6) silkworm purelines were used in the study. Mulberry leaves were supplemented with 0.001% Folic Acid (T<sub>1</sub>) and 0 .002% Folic Acid (T<sub>2</sub>) and compared to the Control (No Supplementation). Results showed that the larvae, cocoons and eggs produced by the silkworm purelines fed with folic acid supplemented mulberry leaves were significantly affected based on the weight of 10 matured larvae, single shell weight, single cocoon weight, effective rearing rate (ERR), cocoon yield per box (CYPB), and fecundity. An interaction effect on the effective rearing rate (ERR) and cocoon yield per box (CYPB) from silkworm fed with folic acid supplemented mulberry leaves revealed significant differences among all treatments and breeds. It can be noted that folic acid-enriched mulberry leaves fed to silkworms tend to have higher results as compared to the control treatment (CT) on all the parameters of the study. published by the <strong>International Journal of Biosciences (IJB)</strong>
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Andadari, Lincah, Yetti Heryati, Retno Agustarini, Herman Sari, and Eyet Mulyati. "Comparison of the Eggs and Cocoons Quality of Some Mulberry Silkworm Hybrid Bombyx mori L." Jurnal Sylva Lestari 11, no. 2 (2023): 236–46. http://dx.doi.org/10.23960/jsl.v11i2.663.
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Sericulture is one of the non-timber forest products (NTFPs) that can help Indonesians live better lives and support environmental improvement. Silk, as a product of sericulture, is one of the five NTFPs that Indonesia has identified as having the ability to boost the nation’s economy and alleviate poverty. However, there are several issues with the development of silk in Indonesia, chiefly issues with the quality of silkworm seedlings and low cocoon yield. Crossbreeding is one method used to boost egg output. This study aimed to evaluate the eggs and cocoons produced by various silkworm (Bombyx mori L.) crosses. The Pustarhut Laboratory hosted the research from May to August 2022. Twelve treatments were employed in the form of crosses using the Randomized Block Design (RBD) method, and each treatment applied three replicates. Overall, the findings demonstrated that the CE cross ((919 x 927) x (804 x p208)) produced eggs (652 eggs) and cocoons of higher quality than other crossings. However, although the egg numbers of CF cross ((919 × 927) × (p208 × 804)) and FC cross ((p208 × 804) × (919 × 927)) produced 622 and 631 eggs, respectively and were significantly different from CE cross, they still produced egg numbers above 600. In addition, they produced cocoon quality that was not significantly different from CE cross. All finding indicates that silkworms from CE, CF, and FC crosses can be used as an alternative to superior silkworm breeding to increase the productivity of silkworm rearing in Indonesia. Keywords: Bombyx mori, cocoon quality, double-cross, seed quality
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VARA, D. C. da, A. M. LEAL-ZANCHET, and H. M. LIZARDO-DAUDT. "Histological processing techniques for the study of Dugesiidae development (Platyhelminthes, Tricladida, Paludicola)." Revista Brasileira de Biologia 61, no. 2 (2001): 341–45. http://dx.doi.org/10.1590/s0034-71082001000200019.
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The objective of the present study was to adapt techniques for the histological processing of Dugesiidae cocoons for the study of embryo development. The cocoons were fixed with formalin, SUSA, Bouin or paraformaldehyde/glutaraldehyde and subsequently embedded in Paraplast or glycol methacrylate (Historesin). Paraplast embedding yielded reasonable results only after the cocoon was perforated or fixed for a prolonged period of time using softening techniques with acid solutions. When the SUSA or Bouin fixative and Historesin embedding techniques were used the results were good for light microscopical analysis. Fixation with paraformaldehyde/glutaraldehyde and glycol methacrylate embedding resulted in better tissue preservation, and did not require prolonged fixation or softening techniques. Thus, we suggest this technique for light microscopical analysis of embryo development in Dugesiidae.
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Singh, L., N. Singh, and K. Singh. "Identification of high yielding oak tasar silkworm hybrids." Journal of Non-Timber Forest Products 16, no. 4 (2009): 281–84. http://dx.doi.org/10.54207/bsmps2000-2009-oy62tn.
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The rearing performances of twelve selected oak tasar silkworm hybrids were estimated based on the multiple trait evaluation index (E.I.) method in two trial rearing for the eight yield contributing traits, viz., fecundity, hatching percentage, cocoon yield per disease free laying, effective rate of rearing (ERR), cocoon weight, shell weight, shell ratio, filament length. In the first trial rearing, the hybrid PRP12 x Blue recorded the highest E.I. value (54.77), followed by B6 x PRP5 (54.55), BY1 x PRP5 (53.72), BY1 x PRP12 (52.77), PRP3 x BY1 (51.40) and BY1 x Blue (50.31). In the second trial rearing, B6 x PRP5 manifested the highest E.I. value (64.11) followed by BY1 x PRP12 (64.07), BY1 x Blue (55.21) and PRP12 x Blue (55.21). It is observed that the four hybrids, viz., PRP12 x Blue, B6 x PRP5, BY1 x Blue and BY1 x PRP12 exhibited consistent high E.I. values of above 50 in both the trial rearing. Therefore, these four hybrids can be used in future breeding program and commercial production of cocoons.
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Bukhari, Rubia, Mukhtar, Ahmed, Arti Sharma, and Azad Gull. "Influence of Natural Dyes on the Qualitative and Quantitative Parameters of Bivoltine Silkworm Breeds under Sub-Tropical Conditions of Poonch District, Jammu and Kashmir." Journal of Advances in Biology & Biotechnology 27, no. 10 (2024): 1528–41. http://dx.doi.org/10.9734/jabb/2024/v27i101575.
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The study on Influence of Natural Dyes on the qualitative and quantitative parameters of Bivoltine Silkworm Breeds under Sub-tropical Conditions of Poonch District, UT Jammu and Kashmir,” was conducted during the spring of 2022 at the PG, Department of Sericulture, Poonch Campus, University of Jammu. The study examined the effects of feeding bivoltine silkworm breeds CSR16 and CSR27 with two concentrations (50% and 100%) of natural dyes: madder (Rubia cardifolia) and indigo blue (Indigofera tinctoria). A comprehensive evaluation of both qualitative and quantitative parameters was undertaken, including fecundity, hatching %, larval duration, weight of 10 mature larvae, survival rate, mortality %, pupation % and cocoon quality parameters. The results indicated significant enhancements in fecundity, hatching % and cocoon yield for silkworms treated with both dyes at 100% concentration (T2). Specifically, CSR16 and CSR27 exhibited the highest values for larval weight, cocoon weight, pupation rate and shell ratio % in T2 treatments. The findings suggest that feeding silkworms natural dyes, particularly at higher concentrations, significantly improved the economic parameters of both breeds. While the cocoons produced were intrinsically coloured without compromising commercial parameters, the colour intensity was lighter than anticipated. This implies that introducing dyed mulberry leaves during the 1st instar stage may yield more favourable results. Overall, the study demonstrates that madder and indigo dyes are suitable for producing coloured silk, offering potential for large-scale applications in sustainable silk production.
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Muhammad, Riaz, Seok-Ho Lee, Kay-Thwe Htun, et al. "Customized Integrating-Sphere System for Absolute Color Measurement of Silk Cocoon with Corrugated Microstructure." Sensors 23, no. 24 (2023): 9778. http://dx.doi.org/10.3390/s23249778.
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Silk fiber, recognized as a versatile bioresource, holds wide-ranging significance in agriculture and the textile industry. During the breeding of silkworms to yield new varieties, optical sensing techniques have been employed to distinguish the colors of silk cocoons, aiming to assess their improved suitability across diverse industries. Despite visual comparison retaining its primary role in differentiating colors among a range of silk fibers, the presence of uneven surface texture leads to color distortion and inconsistent color perception at varying viewing angles. As a result, these distorted and inconsistent visual assessments contribute to unnecessary fiber wastage within the textile industry. To solve these issues, we have devised an optical system employing an integrating sphere to deliver consistent and uniform illumination from all orientations. Utilizing a ColorChecker, we calibrated the RGB values of silk cocoon images taken within the integrating sphere setup. This process accurately extracts the authentic RGB values of the silk cocoons. Our study not only helps in unraveling the intricate color of silk cocoons but also presents a unique approach applicable to various specimens with uneven surface textures.
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Singh, N., L. Singh, and K. Singh. "Estimation of general and specific combining ability and heterosis to identify suitable parents in Oak Tasar silkworm breeds." Journal of Non-Timber Forest Products 17, no. 3 (2010): 283–90. http://dx.doi.org/10.54207/bsmps2000-2010-6946ke.
Full textAbstract:
Two species of oak tasar silkworm, namely Antheraea proylei Jolly and Antheraea pernyi Guerin- Menevelle and eight synthesized breeds named PRP₂, PRP₃, PRP₅, PRP₁₂, RPP₄, Blue, B₆ and BY₁ were used in full 12 diallel cross mating system and 90 F₁ hybrids were generated. Combining ability analysis was carried out for eight important economic characters, viz., fecundity, hatching, survivability (effective rate of rearing, ERR %), cocoon yield (number of cocoons per disease free laying, dfl), cocoon weight, shell weight, shell ratio, and filament length following full diallel cross analysis given by Griffing (1956a and b). The variances due to general combining ability (GCA) and specific combining ability (SCA) showed the importance of both additive and non-additive gene effects in the inheritance of the eight characters studied. The values of the ratio of the non-additive genetic variance to additive variance showed that non- additive gene action played great role in the inheritance of the traits-hatching. cocoon yield, survivability (ERR), cocoon weight, shell weight, shell ratio and filament length. Significant reciprocal variances revealed in seven parameters viz., fecundity, hatching percentage, cocoon yield per dfl, ERR, cocoon weight, shell ratio and filament length indicated the maternal effects in these traits. The breed viz. BY₁ exhibited significant GCA effects in majority of the characters followed by B6 and PRP₁₂ which indicates that that these breeds are good combiners. The analysis of SCA effects and reciprocal effects in 90 crosses revealed that none of the hybrids was consistently good in all the eight characters studied. Only two crosses showed significant SCA effects in four characters and two crosses showed significant SCA effects in three characters while a few hybrids showed significant effects in one or two characters only. Among the indirect crosses, only one cross showed significant reciprocal effects in four characters and four crosses showed significant reciprocal effects in three characters while a few hybrids showed significant effects in one or two characters only. The three hybrids namely PRP₁₂ X Blue, BY₁ X PRP₅ and B₆ X PRP₁₂ which showed significant SCA effects and heterobeltiosis in most of the desired characters may be recommended for further field trial rearing for commercial exploitation.
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Rahman, Md Naymur, Tabassum Firdaus Nuziefa, Md Fazlul Haque, Moni Krishno Mohanta, and Md Ariful Hasan. "Nutritive Effects of Calcium Carbonate (caco3) on Selected Commercial Traits of Mulberry Silkworm (Bombyx mori L.)." Asian Journal of Research in Zoology 8, no. 1 (2025): 17–25. https://doi.org/10.9734/ajriz/2025/v8i1178.
Full textAbstract:
Silkworm (Bombyx mori) is the primary producer of silk. It has also been noted that minerals affect the quality of the silkworm. Calcium, a mineral with vital metabolic functions, might be involved in betterment of silkworms resulting in high quality silk production. Hence, this study was designed to evaluate the nutritive effects of Calcium carbonate (CaCO3) on silkworms and subsequent silk production. Immediately after the completion of the third instar stage of silkworm (crossbreed race - BSR-95/14(M)SL), they were divided into the control group and treated groups. Both the treatment and control groups were replicated thrice with 60 larvae each. Then, the effect of Calcium carbonate was studied at 4th and 5th instar larvae of silkworm. The treated and the control group of 4th and 5th instar larvae of silkworm was fed four times a day with Mulberry leaves either dipped into different concentrations of Calcium carbonate (0.1%, 0.2%, 0.3%, 0.4% in distilled water) or dipped into distilled water only respectively. The results showed that the supplementation of Calcium Carbonate (CaCO3) with Mulberry leaves resulted in significantly higher larval, egg, pupal, and cocoon characteristics compared to the control group. Among the different concentrations, 0.2% Calcium Carbonate supplementation showed the most valuable effect on silkworm. It can be concluded that enrichment of mulberry leaves with calcium carbonate is suitable for improvement of economic characteristics of silkworms, hence it might be suggested for usage in boosting farmers' yields.
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Mukhamadrasulov, Shamsiddin, Oxunjon Akhunbabaev, and Gulam Valiev. "THE WAYS TO INCREASE THE VOLUME OF RAW-SILK PRODUCTION IN THE SILK INDUSTRY." Journal of Science and Innovative Development 3, no. 5 (2020): 116–23. http://dx.doi.org/10.36522/2181-9637-2020-5-14.
Full textAbstract:
The article presents the research results to increase the volume of raw silk in the silk industry. Increasing the volume of cocoon harvesting, raw silk production and quality of the product is an urgent task today. The purpose of the research is to develop a new structure for mulberry plantations, which will increase the yield of mulberry leaf and thereby increase the volume of raw silk production in the silk industry. Methods have been developed for cultivating a new structure of a low-stemmed 1-tier 2-fist plantation of checkerboard order, plantations with double rows and united double rows. The leaf yield obtained from the plantation was 582.8 centners per hectare, the cocoons obtained 3.5 tons and raw silk 570.9 kg. The leaf yield obtained from a plantation with three and four combined double rows was 419.6-512.9 centners per hectare, cocoons obtained 2.5-3.1 tons and raw silk 411.0-502.4 kg. With a small land area, a 1-tier 2-fist plantation of checkerboard order is recommended, with a large land area – a plantation with three and four combined double rows, with additional production of other plant crops from the land plot – a plantation with double rows.
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Kumar, Ashok, Hasansab Nadaf, Priyanka Yadav, Hemlal Sahu, T. Selvakumar, and S. Periyasamy. "Race to Quality: A Study of Tasar Silkworm Cocoon Traits." UTTAR PRADESH JOURNAL OF ZOOLOGY 45, no. 22 (2024): 108–18. https://doi.org/10.56557/upjoz/2024/v45i224664.
Full textAbstract:
This research work investigates the post-cocoon parameters of three Tasar silkworm races: Daba Bivoltine (DBV), Daba Trivoltine (DTV) and BDR-10, reared during the second crop, to enhance understanding of their qualitative and quantitative traits for commercial sericulture. Conducted at the Silk Technical Service Center (STSC) of Central Silk Technological Research Institute (CSTRI), Central Silk Board (CSB) in Bilaspur, Chhattisgarh, the study measured various parameters, including peduncle length, weight, thickness, cocoon color, shape, weight, shell weight, shell ratio, filament length, non-broken filament length (NBFL), filament denier, raw silk recovery, reelability, boil-off loss and the number of cocoons required to produce 1 kg of raw silk. The results revealed that BDR-10 exhibited the highest cocoon weight, reelability and raw silk recovery, making it the most productive race, while DBV showed superior filament length, shell weight and denier, providing a balance between productivity and quality. Although DTV demonstrated lower performance in some parameters, it exhibited the highest shell ratio and filament denier, indicating its potential for specific applications requiring thicker filaments. The study concludes that BDR-10 is the most promising race for maximizing silk yield and quality, DBV offers a balanced option, and DTV can still be utilized for commercial reeling with appropriate precautions.
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Xu, Jun, Qinglin Dong, Ye Yu, et al. "Mass spider silk production through targeted gene replacement in Bombyx mori." Proceedings of the National Academy of Sciences 115, no. 35 (2018): 8757–62. http://dx.doi.org/10.1073/pnas.1806805115.
Full textAbstract:
Spider silk is one of the best natural fibers and has superior mechanical properties. However, the large-scale harvesting of spider silk by rearing spiders is not feasible, due to their territorial and cannibalistic behaviors. The silkworm, Bombyx mori, has been the most well known silk producer for thousands of years and has been considered an ideal bioreactor for producing exogenous proteins, including spider silk. Previous attempts using transposon-mediated transgenic silkworms to produce spider silk could not achieve efficient yields, due to variable promoter activities and endogenous silk fibroin protein expression. Here, we report a massive spider silk production system in B. mori by using transcription activator-like effector nuclease-mediated homology-directed repair to replace the silkworm fibroin heavy chain gene (FibH) with the major ampullate spidroin-1 gene (MaSp1) in the spider Nephila clavipes. We successfully replaced the ∼16-kb endogenous FibH gene with a 1.6-kb MaSp1 gene fused with a 1.1-kb partial FibH sequence and achieved up to 35.2% chimeric MaSp1 protein amounts in transformed cocoon shells. The presence of the MaSp1 peptide significantly changed the mechanical characteristics of the silk fiber, especially the extensibility. Our study provides a native promoter-driven, highly efficient system for expressing the heterologous spider silk gene instead of the transposon-based, random insertion of the spider gene into the silkworm genome. Targeted MaSp1 integration into silkworm silk glands provides a paradigm for the large-scale production of spider silk protein with genetically modified silkworms, and this approach will shed light on developing new biomaterials.
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Hosamani, Vinayak, S. Murali, P. Sowmya, et al. "Influence of Nutrition on Growth and Yield of G4 Mulberry Variety (Morus alba L.) and Bio-assay of Multivoltine Silkworm, Pure Mysore in Southern dry Zone of Karnataka, India." Journal of Scientific Research and Reports 29, no. 6 (2023): 32–39. http://dx.doi.org/10.9734/jsrr/2023/v29i61752.
Full textAbstract:
The experiment was carried out during 2019-20 at P-2 Pure Mysore Multivoltine Basic Seed Farm (BSF), National Silkworm Seed Organisation, Nagenahalli, Karnataka to know the effect of nutrient management on the growth and yield of G4 mulberry variety and its subsequent bioassay of multivoltine silkworm, Pure Mysore. The mulberry garden (three years old) with G4 variety planted in paired row system was used for the experiment with seven treatments and three replications. The growth parameters (average of 5 crops) viz., plant height, number of branches per plant, lowest number of leaf in 100g weight, weight of individual leaf, weight of 100 fresh leaf, leaf yield per plant and leaf yield per ha-1were significantly highest (134.6 cm, 14.0, 24.0, 4.18g, 384g, 800g and 55.55 Mt) with the application of 100 % RDF, poshan spray and application of vermicompost at5 t/ha/year. The results of the bio-assay (average of five rearings) also showed the superiority forweight of 10 full grown larvae (27.2 gm), single cocoon weight (1.27g), single shell weight (0.18g), shell ratio (14.25%), ERR (95.00%) pupation (92.00%), number of cocoons/kg (787) and yield per 100 dfls (52.10 kg) in the treatment having 100 % RDF, poshan spray and application of vermicompost of at5 t/ha than other treatments. Combined application of organic and inorganic sources of nutrients increased the productivity of the mulberry in G4 variety and subsequently better performance of Pure Mysore multivoltine seed cocoon parameters.
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Hosamani, Vinayak, Venkatesh Hosamani, and G. R. Manjunath. "Social Betterment and Economic Empowerment of Sericulture Farmers in Northern Hilly Zone of Karnataka, India." Journal of Agriculture Research and Technology 49, no. 01 (2024): 217–22. https://doi.org/10.56228/jart.2024.49133.
Full textAbstract:
Sericulture, one of the important enterprises undertaken by farmers in North Karnataka, is an eco-friendly, agro-based, labour intensive, low input and commercially attractive farm enterprise falling under cottage and small-scale sector. Among the factors that contribute for successful cocoon production, socio- economic factors play a significant role in determining the knowledge and adoption levels of sericulture technologies for production of mulberry and cocoons especially in recently adapted areas of Uttar Kannada district. The present study was an ex-post facto questionnaire based research on socio-economic status of sericulture farmers was carried out during 2021-2022 Uttar Kannada district representing hilly zone of Karnataka state. A sample of 50 farmers was selected randomly from eleven villages in these taluks. The study revealed that half of the sericulture farmers belonged to middle age (31 to 50 years), as high as 60.00% farmers had education up to 8th to 10th standard, 46.00% of the family belonged to medium size, and 38% had long experience in sericulture while 18-20% were relatively new (< 3 years) to the enterprise with poor adaption rate of the improved technologies and mechanisation (46.00%). Further, 40.00% of farmers fell under low and medium rearing category, 48% farmers belonged to medium brushing of dfls per crop (100-200 dfls crop-1) and majority (64%) were getting the average yield (60-75 kg 100-1 dfls) with good management of the crop while 22.00% were getting more than 80 kg 100-1 dfls cocoon yield due to improved production techniques. Overall, 36- 38% farmers had medium cost of production, benefit per year and benefit: cost ratio (Rs.40000-45000, Rs.100,000-1,68,000 and Rs 1:3-4, respectively). Key words : Cocoon yield, Education, Bivol
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Isichenko, N. V., V. M. Litvin, and I. I. Dekhtyar. "Application of new domestic disinfectants for prevention and control of the silkworm infectious diseases." Veterinary Medicine: inter-departmental subject scientific collection, no. 105 (August 7, 2019): 69–73. http://dx.doi.org/10.36016/vm-2019-105-13.
Full textAbstract:
Regimes for the use of new disinfectants for disinfection of grains of Bombyx mori L. silkworms have been developed. Use of “I Med-Vet” at a concentration of 0.1% with an exposure of 5 minutes allows to increase the viability of young caterpillars by an average of 5.2% (p < 0.05), the overall viability by 7.66% (p < 0.05) and the yield of cocoons by 0.50 kg (p < 0.01). The use of the “FAG” preparation in concentrations of 1.5% with an exposure of 15 minutes and 2% with an exposure of 10 min. leads to a tendency to increase the viability of younger caterpillars (on average by 1.71%), an increase in their overall viability (by 2.66%) and a decrease in the cocoon-capercaillie index (by 2.00%)
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Chandrakanth, N., S. M. Moorthy, M. Rekha, and V. Sivaprasad. "Stability and path analysis for yield and related traits in silkworm, (Bombyx mori L.) reared under stress conditions." Genetika 48, no. 1 (2016): 271–84. http://dx.doi.org/10.2298/gensr1601271c.
Full textAbstract:
The silkworm, Bombyx mori L. is a poikilothermic organism whose growth and development is adversely affected by high temperatures. Rearing of silkworm at high temperature conditions of tropical countries like India causes extensive crop loss by reducing cocoon yield. Breeding new silkworm breeds tolerant to high temperatures is the most effective and economical method to increase cocoon yield. Introduction of stable genotypes in such breeding programs and knowledge on the relationships between cocoon yield and other traits would be more advantageous in increasing cocoon yield at high temperatures. Therefore, in this study twenty silkworm genotypes were reared in five artificially simulated environments with different temperatures ranging from 25?C to 38?C. Based on coefficient of variation (%) values, the traits cocoon yield / 10,000 larvae by weight (CY) and cocoon weight showed maximum and minimal variation among the traits in all the five environments. Analysis of variance revealed a substantial genetic variability among the genotypes for most of the traits studied. The results of combined analysis of variance showed significant differences over traits indicating that the traits are influenced by genotype ? environment interactions. Stability analysis with respect to CY showed higher mean value compared to grand mean, regression coefficient equal to unity and less deviation from regression in ATR16, CSR17, BHR2, S-5 and D13 genotypes, suggesting that they are consistent with the CY over the different environments. Clustering based on the stability parameters resulted in separation of twenty silkworm genotypes into 5 clusters based on their ability to tolerate high temperatures. Correlation studies demonstrated positive and significant (P < 0.05) correlations between CY and other traits. Pupation rate was most positively associated with CY followed by larval weight, cocoon weight, cocoon shell weight and cocoon shell percent. Path coefficient analysis also revealed that the pupation rate had the maximum direct effect on CY followed by cocoon shell weight and larval weight. Cocoon shell percent and cocoon weight exhibited negative direct path effect on cocoon yield / 10,000 larvae by weight. Therefore, the selection based on pupation rate, larval weight and cocoon shell weight can be effective in improving cocoon yield in silkworm at different environments with varying temperature.
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R.S., Umakanth, and Tep Khwenilo. "A Comparative Study of Selected Seed and Commercial Cocoon Markets." Shanlax International Journal of Arts, Science and Humanities 6, S1 (2019): 50–59. https://doi.org/10.5281/zenodo.3335432.
Full textAbstract:
Silk is the outcome of various activities of Sericulture. The word sericulture is derived from the Greek word ‘Sericos’ meaning silk and the English word “culture” means rearing. Hence, sericulture can be de ned as the cultivation or production of silk by rearing silkworms on large scale. Silkworm rearing is practiced by small, medium and large land holders and even landless farmers under rain fed and irrigated patterns. The present study is the outcome of 35 respondents who rear commercial and seed cocoons and sell them in respective markets; the primary data was collected using a model questionnaire by personal interview 23. Totally 11 important parameters like mulberry cultivated land area, mulberry varieties cultivated, manure and fertilizers use in mulberry cultivation, total number of d s/layings reared in 1 batch, number of batches reared in 1 year, total yield of cocoon production per 100 d s, maximum cost of 1Kg of cocoon, commonly reared breeds/hybrids by commercial farmer, commonly reared breeds/hybrids by seed farmer, bonus received for seed farmers along with the constraints/problems faced by the farmers were collected from 35 respondents. The results are presented in tabular and graphical forms and herein discussed.
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K A, Murugesh, Mahalingam C A, and Philip Sridhar R. "Silk Productivity and Yield Related Characters of Selected Pure Races of Mulberry silkworm, Bombyx mori L." Madras Agricultural Journal 100, June (2013): 539–42. http://dx.doi.org/10.29321/maj.10.001352.
Full textAbstract:
Experiment was conducted to study the cocoon, biological and yield related characters of selected pure races of Bombyx mori L. Among the multivoltine races, significantly higher cocoon, biological and yield related characters were observed in AGL3 and low in Pure Mysore. Among the bivoltine races, significantly higher characters were observed in CSR2 and low in NN6D. The silk productivity had significant positive correlation with the cocoon and yield related characters whereas fifth instar larval duration, cocoon length and breadth ratio, and renditta were negatively correlated, among all the 10 pure races tested.