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Journal articles on the topic 'Sheep and sheep breeding'
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1
Bahodirovich, Shayusupov Bobir, and Ruzibaev Nuraddin Rahimovich. "Biological Properties And Breeding Of Meat And Wool Sheep." American Journal of Agriculture and Biomedical Engineering 02, no. 09 (September 27, 2020): 71–76. http://dx.doi.org/10.37547/tajabe/volume02issue09-12.
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Walle, Desalegn Ayichew. "Dorper sheep cross breeding with Indigenous sheep breed in Ethiopia." Journal of Applied and Advanced Research 4, no. 1 (February 23, 2019): 36. http://dx.doi.org/10.21839/jaar.2019.v4i1.250.
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The objective of this review paper was to review dorper sheep cross breeding with indigenous sheep breed in Ethiopia. The paper reviewed and discussed the history of dorper breed introduction, research and development efforts in crossbreeding and their performance under on-station and on-farm management. Formal survey on farmers perception on Dorper cross sheep indicated that the crossbred dorper sheep have non selective feed behavior and excellent in meat production under farmer`s management. On other study showed that dorper sheep was not meet farmer interest in breeding sheep aspect because of black coat color. The performance of indigenous sheep and their crosses with Dorper varied as per the location, management, farming conditions and percentage of exotic blood level inheritance. Different research output by team of researchers on farm and on station performance evaluation of dorper indicated that crossbreds often outperformed their local contemporaries. Under on farm condition, body weight at different ages was significantly higher in 50% Dorper crosses as compared to their 25% and75% counter parts.On station birth weight of Dorper (3.39 3.8 kg) better than crossbreed (3.0 3.24 ± 0.04 kg) and local sheep (2.36 2.77 kg), respectively.While the mean weaning weight (14 16 kg) and yearling weight (26.95 32.43 ± 0.46 kg) of 50% Dorper crossbreed was better than indigenous sheep breeds. However, crossbred ewes and local sheep breeds did not differ in litter size. Dorper crosses with Afar under on station is not economically important due to lower weight in all aspects. Crossbreeding programs of dorper with indigenous sheep require strong research and development support from public service and non-governmental institutions for sustainable design, optimization, and implementation in clearly defined production environments.
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Owen, J. "Breeding for fecundity in sheep." Veterinary Record 123, no. 12 (September 17, 1988): 308–10. http://dx.doi.org/10.1136/vr.123.12.308.
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Dzitsiuk, V. V., and H. T. Tipilo. "CHROMOSOMAL ABNORMALITIES SHEEP." Animal Breeding and Genetics 53 (April 27, 2017): 209–14. http://dx.doi.org/10.31073/abg.53.28.
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Successful and creative plant-breeding work in a stock-raising is based on the estimation of genetic potential of separate breeds, herds and individuals, that is impossible without thorough genetic- populations knowledge. Knowledge of features of caryotype gives an opportunity objectively to estimate the breeds of animals taking into account their population-cytogenetic features, that assists more complete idea about the evolution of breeds. However such important agricultural object, as a domestic sheep, remains cytogenetic poorly studied, especially in a population-cytogenetic aspect.In literature different breeds have small information about frequency and spectrum of the inherited anomalies and populations of sheep. Most chromosomal and genic anomalies of sheep in general not research, although for practice of plant-breeding work necessary knowledge of reasons of their appearance. Caryotype of sheep is presented by 54 chromosomes, from them 26 pairs of autsom and one pair of sexual chromosomes (ХХ or ХУ). Three pairs of large metacentric and 23 pairs of acrocentric chromosomes of different size enter in the complement of autsom. For sheep as well as for other animals characteristic chromosomal polymorphism as a numerical varying of chromosomes in caryotype (aneuploidi and poliploidi), morphological aberations and associations of separate chromosomes. Chromosomal anomalies of sheep are reason of forming of nonviable gamet, that results in death of embryos on the early stages, and, as a result, to the considerable economic losses in economies. The facts of chromosomal aberation educed for sheep testify to the necessity of cytogenetic control of tribal animals, especially rams, with the aim of exposure of animals-transmitters of undesirable changes in caryotype and exception of them from a plant-breeding process.
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Alexander, A. W., G. Burgess, P. R. English, D. C. Macdonald, and O. MacPherson. "A sheep health survey of lowground purchasers of breeding sheep in grampian & the borders of scotland." Proceedings of the British Society of Animal Production (1972) 1991 (March 1991): 89. http://dx.doi.org/10.1017/s0308229600020390.
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The Highlands and Islands Development Board (HIDB) is developing a strategy for the production and marketing of high health breeding sheep. With HIDB support, farmers in the North of Scotland have formed a co-operative to produce and market high health status sheep. The co-op (the Highlands and Islands Sheep Health Association) has over 800 members with a total of 300,000 breeding ewes. Members' flocks are monitored by the Scottish Veterinary Investigation Service for Enzootic Abortion of Ewes (EAE) and for vaccination against the Clostridial Diseases and Pasteurella. To guide HIDB strategy a postal survey was undertaken of lowground breeding sheep purchasers in Grampian and Borders.The objectives were to determine, firstly, lowground breeding sheep purchasers' attitudes, opinions and practices when buying breeding sheep; secondly, their management of sheep health; thirdly, their experience of EAE, its prevention and control; and fourthly, their awareness of sheep health schemes and interest in purchasing high health status sheep.
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Valiev, Ayrat, and Dafik Khafizov. "The place of sheep breeding in the formation of meat resources and the development of the regional economy." Russian Journal of Management 9, no. 2 (August 31, 2021): 46–50. http://dx.doi.org/10.29039/2409-6024-2021-9-2-46-50.
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The economic importance of the sheep breeding industry in the development of the agrarian economy of Russia is due to the types of product assortment obtained in this industry for the formation of food security and for industry. The advantages of sheep breeding in the use of natural forage lands for sheep grazing in Russia are analyzed. The role of sheep products in the food supply of the country is revealed. The place of sheep breeding in the development of the economy of the regions, the level of specialization in the sheep breeding industry in the regions of the country is investigated, the expediency of expanding the regions of sheep keeping, increasing the efficiency of using the potential of the industry, the growth of economic indicators in agriculture, increasing the production of sheep products in rural farmsteads and farms is revealed, the role of consumer cooperation in the development of sheep breeding in small forms of management, increasing employment in rural areas is revealed.
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Kuzmin, V. N., T. E. Marinchenko, and A. P. Korolkova. "Sheep Breeding: State and Development Prospects." Machinery and Equipment for Rural Area, no. 12 (December 29, 2019): 2–8. http://dx.doi.org/10.33267/2072-9642-2019-12-2-8.
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Deykin, A. V., M. I. Selionova, A. Yu Krivoruchko, D. V. Kovalenko, and V. I. Truhachev. "Genetic markers in sheep meat breeding." Vavilov Journal of Genetics and Breeding 20, no. 5 (January 1, 2016): 576–83. http://dx.doi.org/10.18699/vj16.139.
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Robinson, TJ. "Controlled Sheep Breeding: Update 1980-1985." Australian Journal of Biological Sciences 41, no. 1 (1988): 1. http://dx.doi.org/10.1071/bi9880001.
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OMBAYEV, A. M. "KAZAKHSTAN – A POWERFUL SHEEP BREEDING REGION." Sheep, goats, woolen business, no. 4 (2020): 18–21. http://dx.doi.org/10.26897/2074-0840-2020-4-18-21.
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The article analyzes the current state of development of sheep breeding in Kazakhstan. It marks the location of the industry by regions and geographic zones of the country, as well as the number of breeding animals in the direction of productivity in the context of regions of the country.
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Haresign, W. "Controlling reproduction in sheep." BSAP Occasional Publication 14 (January 1990): 23–37. http://dx.doi.org/10.1017/s0263967x00002020.
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AbstractIntravaginal progestagen pessaries + pregnant mare's serum gonadotrophin (PMSG) for controlling the oestrous cycle and for inducing out-of-season breeding have been commercially available for many years. However, extremely good mating management is required if acceptable results are to be achieved. More recently the role of the pineal hormone, melatonin, in the regulation of seasonal breeding has been recognized, and this has led to the development of slow-release formulations for use under farm conditions. Early indications are that such preparations can advance the breeding season by about 4 to 6 weeks, with lambing percentages in early (January) lambing flocks comparable with those of traditional (March) lambing flocks.Recent developments in the use of laparoscopy as an aid to intrauterine insemination and multiple ovulation and embryo transfer (MOET) should play a major role in breed improvement. Intrauterine insemination can markedly improve conception rates following the use of frozen semen compared with the conventional cervical technique, as well as eliminating the incidence of fertilization failure in embryo transfer donors. In addition, laparoscopic collection and transfer of embryos permit repeated collections from the same donor ewes and are much more acceptable than surgical techniques from the welfare point of view.
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DYUSEGALIYE, MUKHIT, UTENBERGEN BISENOV, AYMAN NURGALIYEVA, and ELMIRA ADIETOVA. "Index selection of Kazakh karakul sur-type sheep with platinum shades." Medycyna Weterynaryjna 77, no. 01 (2021): 6492–2021. http://dx.doi.org/10.21521/mw.6492.
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Aim of the study: Karakul sheep farming is one of the effective subsectors of animal breeding in the southwestern region of Kazakhstan. Sheep coloring is a result of genetic factors. Breeding can provide farmers with offspring of the desired color through the selection of parental couples. Materials: This research introduces an index method for breeding sur-type sheep with the proportion of underfur fibers under 25%. Such a proportion of underfur fibers provides a 15.25% deeper color within the breed at the 25.3% higher chance of getting platinum shades. Methods: Platinum coloring in sheep makes them less piebald. The inheritance index is quite stable and is within 55.66-65.66%. In the breeding flock, the initial proportion of sur-type lambs which could be used in coat making (elite class) was up to 8.72%. The analysis of platinum color heritability by Kazakh sur-type karakul sheep shows that this color is inherited as a dominant one in the line breeding. The share of sur-type sheep with platinum shades was between 85.85% and 87.27%. Results: The difference in the inherited trait between the groups of sheep selected according to the proportion of underfur fibers was insignificant, 0.99-1.42% (P > 0.05). The stabilizing selection introduced into the theory of line breeding of Kazakh sur-type sheep allowed optimizing the variability of selected features to the level of desired parameters. The authors have proposed the index selection method for sur-type sheep breeding that can be applied to improve the Atyrau sheep flock, to increase their genetic potential, and to apply various line breeding levels to accelerate the breeding process. Conclusions: The originally designed method for improving breeding indexes will be useful when setting optimal breeding goals (fur color and quality) and assessing genetic parameters of a certain sheep flock. The study was approved by the Ethics Committee attached to the Far Eastern State Agrarian University (Protocol No. 5 of 25 May 2010).
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Csatári, Gábor Bence. "The economic aspects of innovation in sheep breeding." Applied Studies in Agribusiness and Commerce 4, no. 1-2 (July 30, 2010): 97–104. http://dx.doi.org/10.19041/apstract/2010/1-2/14.
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During my investigations, I highlighted three innovations, all of which serve the production of a final product, sheep kefir. This product contains a unique added value and involves several innovational opportunities. I examined the complex economic analysis of the innovations and technological elements investigated with respect to revenues from the sale of sheep milk, sheep cheese (kashkaval) and sheep kefir. The kashkaval-type sheep cheese does not contain sufficient added value to cover the costs of innovational investments. Investigating the innovational activity for developing sheep kefir and for its market introduction, its cash flow balance becomes positive already in the second year after realization, and is able to generate significant profit.
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Guirgis, R. A. "EGYPTIAN SHEEP RESOURCES." Animal Genetic Resources Information 13 (April 1994): 47–58. http://dx.doi.org/10.1017/s1014233900000274.
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SUMMARYLocal Egyptian breeds of sheep, though considered small to medium size, have the desirable qualities of continuous breeding throughout the year and hardiness. Increasing the flock owners income may be through:1. Higher productivityby accelerated lamb production of the valley and delta Ossimi and Rahmani breeds and improving the natural resource situation for the adapted desert Barki breed.2. Establishing a simple grading system for the local coarse wool to improve marketing and encourage its use in small scale industries, hence rural development of the area.
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A. Ombayev, H. Ukbaev, R. Shamekenova, and A. Abdurasulova. "ASTRAKHAN BREEDS SHEEP OF KAZAKHSTAN." SERIES OF AGRICULTURAL SCIENCES 55, no. 1 (February 15, 2020): 17–23. http://dx.doi.org/10.32014/2020.2224-526x.3.
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The purpose of this work is to analyze the origin and distribution of Karakul sheep in the world and the current state of astrakhan sheep breeding in Kazakhstan. The article describes the origin of the Karakul sheep, as well as information on the creation in Kazakhstan of a new Kazakh astrakhan-fat-tail sheep of astrakhan-meat-greasy productivity. The results of a comparative study of the biological characteristics of the astrakhan breeds of sheep bred in Kazakhstan are presented. The main products for the sake of breeding astrakhan sheep breeds are unique in their color, shades and strength of the skin. A major breeding achievement of sheep farmers in Kazakhstan is the creation of Kazakh karakul-fat-tail sheep of astrakhan-meat-greasy productivity, which has no analogues in the world, well adapted to the desert and semidesert zones of Central Asia and Kazakhstan. It should be noted that the biological characteristics of astrakhan sheep breeds allow the efficient use of scarce pastures of inaccessible desert and semi-desert zones.
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Lubko, Dmytro. "Design of a reference intelligence expert system for sheep breeding in national private farms." Ukrainian Journal of Educational Studies and Information Technology 5, no. 3 (September 30, 2017): 1–18. http://dx.doi.org/10.32919/uesit.2017.03.01.
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The paper deals with the design of a reference intelligence expert system for sheep breeding. The process of its design and its functional capabilities are described. The developed reference intelligence expert system makes it possible to display recommendations and tips on the computer screen to select a rational and effective sheep breeding technology, as well as to print the received data. The developed system has a two-tier structure, namely, dialog selection of input criteria (data), as well as a module for logical processing and output of reasonable technology recommendations (output data). The step-by-step method of designing the system is determined. The first step is to obtain a technical specification from the customer (farm, enterprise, farmer, etc.) for the development of a reference system. The second step is to determine criteria for the technology in keeping with the farm requirement specification according to the literature and sheep breeding requirements. The third step is to identify the most important factors influencing the process of sheep raising for each of these criteria. The fourth step is to define the main production rules for which the system will be programmed, namely, the module for logical knowledge processing for this technology (and these are the input parameters (factors) when designing the system). The fifth step is to determine the main output criteria (factors) that will be displayed after processing the input rules of the system based on logical deduction rules according to the appropriate sheep breeding technology. The sixth step is to design buttons for more convenient system usage, in addition, if necessary, or at the request of the customer (for example, a button for deleting previous information in windows, a button for storing recommendations in a separate text file, the exit button, etc.). The seventh step is to test the system by users and the customer. The eighth step is to adopt the developed system by the customer and correct it, if necessary. The ninth step is to provide maintenance of the developed system. The block of input data of the developed intelligence expert system has the following elements: a) sheep handling (pasture-stall, stall-pasture); b) sheep condition (higher condition, average condition, lower than average condition); c) sheep breeding type (meat, milk, meat and milk, wool); d) sheep feeding (meat-and-wool sheep, rams of meat-and-goat sheep, sucking females to lactation); e) methods of breeding (purebred, crossing). The block of output factors where appropriate rational recommendations for sheep breeding technology comprises: a) recommendations for sheep handling; b) recommendations for treatment of sheep diseases; c) recommendations for sheep feeding; d) sheep slaughter and storage of products; e) recommended sheep breeds; f) recommendations for sheep breeding; g) characteristics of products. The developed system is intended primarily for private national farmers or interested private householders. It is noted that the use of this system will allow private households to increase the production and quality of meat, wool, lambskin and furs when breeding sheep. This will reduce the cost of the breeding technology, save the farmer time, allow to save on medicines, feeds, which, in turn, will increase profits and profitability of farms.
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Selionova, M., and G. Bobryshova. "The All-Russian Research Institute of Sheep and Goat Breeding is the flagship of sheep breeding science." Veterinaria i kormlenie, no. 2 (2018): 75–77. http://dx.doi.org/10.30917/att-vk-1814-9588-2018-2-19.
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Li, Yu Guan, and Wen Xing Bao. "RIFD-Based Tracing and Traceability System for Tan Sheep Mutton Products." Applied Mechanics and Materials 556-562 (May 2014): 6076–80. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.6076.
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Based on the study of Tan sheep mutton products supply chain, this paper establishes a tracing and traceability system for Tan sheep mutton products by using RFID technology, internet of things, QR 2D barcode and EPC system . The whole system consists of four sub-systems i.e. Tan sheep breeding management system, Tan sheep data acquisition system based on handheld devices, Tan sheep slaughter and processing management system, tracing and traceability system of Tan sheep mutton products. The whole system is capable of identifying and tracing each Tan sheep, collecting data from Tan sheep breeding stage along with slaughter and processing stage automatically, implementing the function of providing tracing and traceability information inquiry finally.
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MONDAL, B., M. HOSAMANI, T. K. DUTTA, V. S. SENTHILKUMAR, R. RATHORE, and R. K. SINGH. "An outbreak of sheep pox on a sheep breeding farm in Jammu, India." Revue Scientifique et Technique de l'OIE 23, no. 3 (December 1, 2004): 943–49. http://dx.doi.org/10.20506/rst.23.3.1536.
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Filatov, A. S., N. G. Chamurliev, A. G. Mel'nikov, and E. A. Mel'nikova. "Assessment of breeding characteristics of Volgograd sheep in breeding farms." Agrarian-And-Food Innovations 11 (September 29, 2020): 34–44. http://dx.doi.org/10.31208/2618-7353-2020-11-34-44.
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Aim. Study of the class composition, indicators of meat and wool productivity of the sheep of the Volgograd breed in the APC breeding plant «Pallasovskiy» and APC breeding plant «Red Оctober» of the Pallasovsky district of the Volgograd region. Materials and Methods. The material of the study was the quantitative and qualitative indicators of productivity and selection and breeding work in breeding organizations for breeding sheep and goats of various breeds, except for Karakul (breeding farm card) for 2015-2019 and a report on the results of sheep grading for 2019 provided by the APC breeding plant «Pallasovsky» and the APC breeding plant «Red Оctober» of the Pallasovsky district of the Volgograd region. Results. Average number of sheep in APC breeding plant «Pallasovsky» for 2015-2019 amounted to 12742 heads, in the APC breeding plant «Red October» for the same period – 14161 heads. The av-erage live weight and shear of wool in pure fiber of tupping rams in the APC breeding plant «Pal-lasovsky» was 99.2 and 5.28 kg, repair rams – 80 and 3 kg, ewes – 56.8 and 2.3 kg, young ewes – 45 and 1.8 kg, in the APC breeding plant «Red October» – 104.3 and 5.76 kg, 73.68 kg, 57.18 and 2.2 kg, 44.58 and 2.16 kg, respectively. The average yield of lambs per 100 sheep, the live weight for the chopping of rams and young ewes in the APC breeding plant «Pallasovsky» and in the APC breed-ing plant «Red Оctober» amounted to 103 heads, 28.6 kg, 27.4 kg and 120 heads, 31.44 kg. 29.42 kg respectively. The number of animals in the APC breeding plant «Pallasovsky» in 2019 with 64 wool quality was 1402 heads, from 64/60 – 2674 heads, from 60 – 5490 heads, from 60/58 – 838 heads. A similar indicator in the APC breeding plant «Red October» was 1788, 1815, 4312 and 2392 heads, respectively. Conclusion. Pedigree and productive indicators in these breeding farms meet the minimum require-ments and slightly exceeded them. Therefore, we recommend raising and selling breeding animals to improve the productive and breeding qualities in commercial enterprises.
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Alexander, A. W., G. Burgess, P. R. English, D. C. Hacdonald, and O. MacPherson. "A survey of lowground sheep farhers’ concerbs and experience of sheep health and disease in scotland." Proceedings of the British Society of Animal Production (1972) 1990 (March 1990): 158. http://dx.doi.org/10.1017/s0308229600019383.
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The Highlands and Islands Development Board (HIDB) is developing a strategy for the production and marketing of high health breeding sheep. Farmers and crofters in the North of Scotland, with HIDB support, have formed the Highlands and Islands Sheep Health Association (HISHA) to produce and market high health sheep. HISHA has over 500 members with a total of 250,000 breeding ewes. Members’ flocks are monitored by the Scottish Veterinary Investigation Service for Enzootic Abortion of Ewes (EAE) and for vaccination against Clostridial Diseases and Pasteurella. A requirement for information on the sheep health concerns and experiences of the potential purchasers of high health breeding sheep was identified. A survey was undertaken of lowground sheep farmers in Grampian and the Borders of Scotland to provide this information.The objectives were to determine, firstly, lowground sheep farmers’ concerns on sheep health; secondly, their experience of sheep disease problems; and thirdly, their awareness of sheep diseases that can be introduced by wintering sheep for another farmer or through purchased sheep. The survey was carried out by postal questionnaire and the Department of Agriculture and Fisheries for Scotland (DAFS) prepared a mailing list from their census records. The DAFS also undertook the despatch and receipt of the questionnaires to preserve farmer confidentiality. The data was analysed using the Scientific Information Retrieval Data Base Management Systems analytical package.
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Traisov, B., Yu Yuldashbaev, N. Kulmakova, K. Esengaliev, and D. Smagulov. "Inheritance and correlation of productive traits in wool-and-meat producing sheep of different genotypes." Glavnyj zootehnik (Head of Animal Breeding), no. 7 (July 1, 2020): 12–20. http://dx.doi.org/10.33920/sel-03-2007-02.
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The effectiveness and competitiveness of sheep breeding directly depends on increasing the productivity of animals and improving the quality of products obtained from them, and this has been achieving by targeted breeding using the genetic potential of sheep breeds. The solution to this problem can be implemented through the rational use of breed resources of domestic and imported sheep breeding. Sheep breeding in Kazakhstan is the oldest branch of animal husbandry, which plays a major role in providing the national economy with specifi c types of raw materials and food. Sheep produce the largest amount of various products: wool for diff erent purposes, mutton, fat raw materials, sheep’s milk, sheep skin-fur-leather raw materials, lamb pelts. The whole of Kazakhstan and the West Kazakhstan region are characterized by a wide variety of natural, climatic and economic factors that have a specifi c infl uence on the development of sheep breeding in certain regions. In the West Kazakhstan region breeding work is carried out in a herd of Akzhaik wool-and-meat producing sheep to improve individual productive indicators by using the genetic potential of the gene pool of diff erent semifi ne-wool breeds, so breeding and improvement in order to increase the productivity of Akzhaik meat-wool sheep with double productivity is relevant and has great economic signifi cance. The inheritance and correlation of productive traits in Akzhaik wool-and-meat producing sheep obtained from diff erent mating options have been studied in the paper. It has been established that the inheritance of the main economically useful traits is additive in nature in an intermediate type with minor deviations towards one of the parent forms. The coeffi cients of heritability of live weight, clip, length and fi ber fi neness of wool are within the average values. The highest correlation coeffi cients (0,65–0,70) have been found in all groups between the length and fi ber fi neness of wool.
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Macciotta, Nicolò Pietro Paolo, Marcello Mele, Aldo Cappio-Borlino, and Pierlorenzo Secchiari. "Issues and perspectives in dairy sheep breeding." Italian Journal of Animal Science 4, no. 1 (January 2005): 5–23. http://dx.doi.org/10.4081/ijas.2005.5.
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Bleich, Vernon C. "Early Breeding in Free-Ranging Mountain Sheep." Southwestern Naturalist 31, no. 4 (November 10, 1986): 530. http://dx.doi.org/10.2307/3671709.
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Csatári, Gábor Bence. "Economic aspects of innovation in sheep breeding." Acta Agraria Debreceniensis, no. 31 (November 24, 2008): 33–36. http://dx.doi.org/10.34101/actaagrar/31/3002.
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Innovation, as a factor influencing the success of farming, is of outstanding importance also in agriculture. Only those businesses (enterprises, companies) can be successful in the longrun which are able to adapt the new technological elements and to make their own developments occasionally and make them suitable for practical utilization.The innovation activities performed by the enterprises, business organizations can be evaluated at firm (microeconomic) and national economy (macroeconomic) levels. In the case of sheep breeding also, a complex evaluation system should be applied, since this is a sector, which has significant rural development and social impacts. The innovation processes are analysed from the identification of the problem inducing research and development until the return of the invested resources.
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Rupp, Rachel, Sebastian Mucha, Helene Larroque, John McEwan, and Joanne Conington. "Genomic application in sheep and goat breeding." Animal Frontiers 6, no. 1 (January 1, 2016): 39–44. http://dx.doi.org/10.2527/af.2016-0006.
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McManus, Concepta, Samuel Rezende Paiva, and Ronyere Olegário de Araújo. "Genetics and breeding of sheep in Brazil." Revista Brasileira de Zootecnia 39, suppl spe (July 2010): 236–46. http://dx.doi.org/10.1590/s1516-35982010001300026.
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Studies in genetics and breeding of sheep in Brazil have increased significantly in recent years. These involve research in characterization, breeding and crossing sheep using new technologies available incorporating both classical quantitative and molecular genetics. Improvements in statistical techniques, computational resources as well as analysis of DNA and gaps in present knowledge and opportunities for possible research are pointed out. There is a need for greater interaction between various groups working in the country as well as interactions with other disciplines such as Geographical Information Systems, Statistics, Bioinformatics, as well as biological studies such as physiology and proteomics.
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Drogemuller, C., F. De Vries, H. Hamann, T. Leeb, and O. Distl. "Breeding German sheep for resistance to scrapie." Veterinary Record 154, no. 9 (February 28, 2004): 257–60. http://dx.doi.org/10.1136/vr.154.9.257.
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Blair, H. T., and D. J. Garrick. "Application of new technologies in sheep breeding." New Zealand Journal of Agricultural Research 50, no. 2 (June 2007): 89–102. http://dx.doi.org/10.1080/00288230709510285.
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Begeyeva, M. K., and M. A. Alseitova. "Innovative technologies in sheep breeding: economic efficiency." Problems of AgriMarket, no. 2 (June 30, 2021): 108–15. http://dx.doi.org/10.46666/2021-2.2708-9991.13.
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The directions of sustainable development of agri-food complex, maintaining a high level of its competitiveness based on modernization of production are presented. The goal is to determine the patterns of changes in economic indicators as a result of introduction of new technologies in sheep breeding. Tasks requiring an early solution: analysis of factors contributing to the growth of fixed assets in livestock farms in Kazakhstan; research on the application of the automation system in livestock industry. The methodological basis of the article is a set of general scientific principles and methods: a systematic approach, synthesis, generalization of information. Results – the mechanisms of using modern equipment in sheep-breeding model farms are shown, the economic efficiency of methods for optimizing animal husbandry is substantiated. The ways of reducing the cost as a result of increasing the level of the material and technical base are considered, which requires, in contrast to other livestock sub-complexes, less investment. The importance of such indicators as resource saving, growth of labor productivity, profitability of production, cost reduction, capital intensity, capital productivity, capital-labor ratio is argued. Conclusions – one of the most important scientific and technical problems is the development of a technical policy, as well as a system of machines and technologies for mechanization and automatic control in livestock sector for the formation of market for technical means, equipping livestock producers with them, which will ensure the competitiveness of domestic food in the world market and meet the demand for food products in domestic market.
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Gürer, Betül. "The impacts of agricultural support on enhancing the efficiency, competitiveness and sustainability of sheep breeding: The case of Niğde and Aksaray provinces, Turkey." Spanish Journal of Agricultural Research 18, no. 4 (November 3, 2020): e0113. http://dx.doi.org/10.5424/sjar/2020184-16031.
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Aim of the study: The sheep breeding sector in Turkey has lost its potential to become a highly competitive and efficient sector despite a number of policies being implemented over the years. Therefore, the objective of the study was to empirically evaluate the competitiveness of sheep breeding and the determinants of the technical efficiency of the sector as well as the current impacts of agricultural policies on the performance of the sector.Area of study: Niğde and Aksaray provinces of TR71 region in Turkey.Material and methods: The required primary data were obtained through a face-to-face survey from 110 sheep breeders. Two methodological approaches, namely Stochastic Frontier Analysis and Policy Analysis Matrix, were used.Main results: The support policies caused an inefficiency in allocation of already scarce resources in sheep breeding, but not ensure to increase the competitiveness at both national and international levels. Sheep farms could increase their income by up to 50% without changing the level of input by taking into account the factors that caused inefficiency in sheep breeding. The major determinants that decreased efficiency were current subsidies for sheep breeding, herd size and the excessive utilization of family labour, while the factors that increased the efficiency were sheep race, access to extension services, grazing period and location. Besides, Domestic Resource Cost (DRC) value in the efficient farms decreased to 0.88, implying that they had a comparative advantage.Research highlights: Implementation of structural support policies with long term would enhance efficiency of sheep farms and ensure the sustainability and competitiveness of the sector.
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Stanciu, Mirela Cărătuș. "Study on Consumer Attitudes for Sheep Meat Consumption." Annals ”Valahia” University of Targoviste - Agriculture 12, no. 2 (October 1, 2018): 48–51. http://dx.doi.org/10.2478/agr-2018-0017.
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Abstract This paper presents data on sheep breeding in Romania and on a international level. The main objectives of the national breeding program will be presented. A study has been conducted to find out how consumers perceive buying sheep meat and their attitudes towards it. Strong effort is needed to promote the consumption of sheep meat, which will lead to the support of the sheep sector. It is necessary to form a strong consumer preference for sheep meat by communicating the positive (natural product) and durable characteristics of the product.
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Zhelyazkova, P., V. Petrova, and D. Dimov. "Study on the continuity of farmer`s breeding activity with Patch Faced Maritza sheep breed." Agricultural Science and Technology 10, no. 4 (2018): 285–89. http://dx.doi.org/10.15547/10.15547/ast.2018.04.054.
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Abstract. The aim of this study was to analyze tendencies in the population of Patch Faced Maritza sheep breed and estimation of sustainability of the breeding program for this breed by analyzing continuity of farmer`s breeding activity. Patch Faced Maritza sheep breed is a local Bulgarian sheep breed typical for lowland regions of South Bulgaria and could be successfully used as local genetic resource in productive strategies for milk and meat production. Data about breeders and population structure of the breed during 27 years (1991-2017) were provided by the breeding association of Maritza sheep breed. The changes in the population structure during the 2005-2017 were tracking. The number of breeders included in the breeding program was increased from 10 to 88 herds. This positive trend in the population and increased farmer`s interest to participate in the breeding program were due to government programs for supporting sheep farming and preserve many indigenous sheep breeds that are part of agricultural heritage. The increased number of herds included in the breeding program led up to enlarge active population in three main reproductive categories: ewes, rams and breeding lambs. Comparatively small number of ewes, rams and breeding lambs which in 2005 were respectively 375, 13 and 180 run to 7678, 493 and 1868 in 2017. This enlarge of active population was achieved by three ways: joining farmers which kept Patch Faced Maritza sheep but not participating in official breeding program of the breed, increasing the breeding lambs for replacement rate and limited upgrade crossing. On the based breeding activity contracts with farmers it was estimated continuity of breeding activity in two categories of breeders: finished breeding activity with the breed and continuing with active breeding activity with the breed. The causes for discontinuing of active farmers breeding work were analysed. A total number of farmers which finished breeding activity was 54 for 27 years. Averaged continuity of farmer`s breeding activity was 4.26 years. The analysis of this information find out five reasons for discontinuing farmers breeding activity: disinterest, death, old age, switching to another business, and changing the breed. From the listed reasons the most important are switching to another business 23 farmers and disinterest for active breeding work 17 farmers. The most important fact results nowadays is the fact that Patch Faced Maritza sheep is occurred already in 11 regions in Bulgaria, although 74.11% of the population is situated in two regions Plovdiv and Pazardzhik.
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ALIGAZIEVA, A. P., and P. O. OMAROVA. "PRODUCTIVE QUALITY OF YOUNG SHEEP OBTAINED BY CROSS BREEDING OF THE DAGESTAN MOUNTAIN SHEEP WITH RUSSIAN MEAT MERINO SHEEP." AIC development problems of the region 4, no. 40 (December 2019): 155–59. http://dx.doi.org/10.15217/issn2079-0996.2019.4.155.
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Herman, Y. I., and A. I. Herman. "IMPROVEMENT OF SELECTION METHODS OF EVALUATION OF THE PRODUCING COMPOSITION OF THE ROMANOV SHEEP BREED." Animal Breeding and Genetics 57 (April 24, 2019): 45–50. http://dx.doi.org/10.31073/abg.57.06.
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In order for Roman breed sheep to meet modern requirements, remain competitive and in demand in specific breeding conditions at sheep breeding enterprises of various forms of ownership and departmental affiliation, it is necessary at this stage of selection and breeding to develop and implement a new scale for assessment of breeding sheep.
The aim of research was to improve and approbate the assessment methods for a set of breeding traits of sheep of the Roman breed in Belarus for further development of breeding value indices.
The research subject was rams and ewes of RUE “Vitebsk breeding enterprise” of Vitebsk region and individual sheep-breeding enterprises with various forms of ownership in the amount of 370 animals. Expert assessment was carried out according to two or more ewes lambing according to the method of assessment and selection of sheep according to set of traits for breeding use of the Romanov breed. Analysis and data processing were carried out in the laboratory for horse breeding, fur farming and small animal breeding at the Republican Unitary Enterprise “Research and Production Center of the National Academy of Sciences of Belarus for Animal Breeding” in accordance with methodological recommendations for study of performance and biological traits of sheep of breeds and groups few in number.
Due to possibility of taking into account different number of evaluated traits, there is flexibility and objectivity in evaluation of sheep in scores, followed by ranking to: the best, valuable, useful and not recommended for breeding, which, in turn, correspond to a specific integrated index of an animal’s breeding value in percent.
Research results. In the course scientific research, it was determined that, depending on scores received and the planned breeding value index, producing rams get the following purpose:
– rams for self-repair purpose – over 9.0 scores or BVI 101% and above;
– rams for breeding purpose – 8 scores or BVI 85–100%;
– rams for market production purpose – 7 scores or BVI 65–84%.
The obtained evaluation indicators for each animal are summarized and the average score for all producing rams is calculated, and comprehensive index of breeding value is determined. It’s worse noting that in the future studies are planned with the most comprehensive and reliable method, which is based on determining the results of expert evaluations of the offspring according to set of traits with the subsequent ranking of producers by this trait.
Depending on the scores received and the breeding value index, ewes get the following purpose:
– ewes for self-repair purpose – over 8.0 scores or BVI 101% and over;
– ewes for breeding purpose – 8–7 scores or BVI 85–100%;
– ewes for market production purpose – 7–6 scores or BVI 65–84%;
– other – 6–5 scores or BVI up to 50–64%.
The ranking scales for producing rams and ewes developed by us include the assessment of animals by origin, typicality, measurements, exterior, fur-coat traits, and queens additionally by fertility rate, which is taken into account for at least 2 lambs. Due to possibility of taking into account different number of evaluated traits, there is flexibility and objectivity in evaluation of sheep in scores, followed by ranking according to time scale to: best, valuable, useful and not recommended for breeding, which, in turn, correspond to a specific integrated index of an animal’s breeding value in percent.
It should be noted that this development (assessment scale) allows livestock breeders at sheep farms applying it in practice without additional training when evaluating sheep, it is an intermediate link in transition to an index assessment of animals’ breeding value.
Conclusion. In the future, the developed scales for rams and ewes ranking will allow developing individual breeding value indices and planned comprehensive index for evaluating sheep of the fur-coat direction of productivity, which will contribute to more objective and rapid differentiation of the breed quality, increase efficiency of the breeding work and predictability of results.
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Brown, D. J., and N. M. Fogarty. "Genetic relationships between internal parasite resistance and production traits in Merino sheep." Animal Production Science 57, no. 2 (2017): 209. http://dx.doi.org/10.1071/an15469.
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Breeding Merino sheep that are resistant to internal parasites alleviates the high costs associated with treatment of worm infestation and loss of production, as well as mitigating the development of anthelmintic resistance among the major worm species. Faecal worm egg count ((cube root transformation), wec) can be used in sheep as a measure of internal parasite resistance. Accurate estimates of genetic parameters for wec are required for calculation of Australian Sheep Breeding Values and inclusion of worm resistance in sheep breeding programs. This study provides updated estimates of heritability for wec and its genetic correlations with production traits. Data were analysed from a wide range of Australian and New Zealand Merino sheep in the MERINOSELECT database, which included 141 flocks with 801 flock years and up to 217 137 animals with wec recorded in at least one of four ages (W = weaning, P = post weaning, Y = yearling, H = hogget). The heritability estimates ranged from 0.16 ± 0.01 for Ywec to 0.29 ± 0.01 for Wwec, with generally high genetic correlations between the ages. Bivariate analyses estimated genetic correlations between wec at the various ages and growth, carcass quality, reproduction and wool production traits at various ages. These genetic correlations were generally small or close to zero, albeit with some significantly different from zero. The moderate heritability for wec (0.2–0.3) and its high phenotypic variation (coefficient of variation >30%) shows that relatively rapid selection response for worm resistance could be achieved. Inclusion of wec in sheep breeding programs to increase worm resistance would be expected to have little if any impact on other important production traits. These genetic parameters have been incorporated into MERINOSELECT by Sheep Genetics to provide Australian Sheep Breeding Values for wec and appropriate indices for wool and meat production. There is evidence that genotype × environment interactions may be important in some environments by reducing the accuracy of Australian Sheep Breeding Values for wec. Hence it may be prudent for breeders to implement strategies that manage the risk of any impact of genotype × environment on their breeding program.
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MUSALAYEV, KH KH, R. A. ABDULLABEKOV, and P. M. MAGOMEDOVA. "MERINO SHEEP BREED RAISED UNDER MOUNTAIN BREEDING SYSTEM." Izvestiâ Timirâzevskoj selʹskohozâjstvennoj akademii, no. 3 (2020): 81–93. http://dx.doi.org/10.26897/0021-342x-2020-3-81-93.
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Dagestan is the leading Republic of Russia in terms of the number of sheep and sheep breeding products. The zoned target sheep breed in Dagestan is the Dagestan mountain breed. However, this breed produces thin but non-merino wool. Developing the Merino sheep breed suitable for mountain breeding is an urgent problem. The new Merino sheep breed was developed for the foothill zone of Dagestan, where summer Alpine and winter low-lying pastures are located at a distance of no more than 150 km from each other, and summer Alpine pastures are located at an altitude of up to 3000 meters above sea level. The research and stock breeding work was carried out at the farm production enterprise “Krasniy Oktyabr’”, the Kazbek district, in the period between 2005 and 2019. The work resulted in the development of the Arthlukh Merino sheep breed. (Patent for selection achievement No. 10112 “State Commission of the Russian Federation for Selection Achievement Tests and Protection”). The breed was developed by crossing the Stavropol sheep rams with the Dagestan mountain sheep, with the subsequent improvement of crossbreeds by the Manych Merino breed. A distinctive feature of the new Merino breed from the basic herdmates of the Dagestan Mountain breed is the high live weight, which is 15.3–16.5% higher in different sex and age groups. Besides, the amount of washed wool shorn is 16.2–26.0% higher. The ewes’ wool fineness is 22.9 microns (19.4–23.0) – 64 qualities. That of adult rams amounts to 23.3 microns (19.9–23.3) and has 60 qualities. The difference of the wool fineness on the side and thigh does not exceed one quality. The coat length on the side of ewes is not less than 9.0 cm, rams – 9.5 cm, gimmers (young ewes) – 9.5 cm and replacement rams – 10.0 cm. The wool strength is 7.0 cN/Tex. The belly wool cover is good. The suint is stable, of a white and light cream color. The average yield of washed wool excluding the lowest grades is 64%. The fertility of ewes ranged from 125% to 135%.
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Bezhenar, Inna. "Assessment of the sheep industry development." Ekonomika APK 316, no. 2 (February 26, 2021): 25–40. http://dx.doi.org/10.32317/2221-1055.202102025.
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The purpose of the article is to carry out an analytical review of the current state of the sheep industry development, to investigate current trends and key features of the domestic sheep industry. Research methods. Methods used: monographic - when studying the features of the functioning and detailing the state of development of the industry; theoretical generalization - to characterize the Ukrainian lamb market; analysis and synthesis - to summarize the reasons hindering the stabilization and development of the industry in the context of diversification of production and export potential; graphical and tabular - for visual display and full visualization of the statistical analysis of the obtained results of the study. The argumentation of the theoretical provisions and the obtained conclusions regarding the prospects for the development of production of products of the sheep breeding industry in Ukraine and their generalization is based on a systematic approach and an abstract-logical method. Research results. The state of the sheep breeding industry in the world and in Ukraine is analyzed and characterized, the problems in the functioning of the domestic industry in Ukraine are systematized, and promising directions of development are highlighted. Scientific novelty. The directions of development of the sheep breeding industry in Ukraine are proposed in accordance with regional characteristics. Practical significance. The presented provisions are aimed at revealing the typical features and the most significant problematic issues of domestic sheep breeding. The implementation of the proposed measures will provide an increase in the economic potential of the production of sheep products and will significantly increase the efficiency of the producers of this industry. In general, solving the tasks set will contribute to the creation of jobs in new enterprises for the production and processing of industry products in all regions of Ukraine. These approaches can be used by government bodies when making decisions to regulate and stabilize the situation in the sheep breeding industry. Tabl.: 2. Figs.: 8. Refs.: 28.
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Torekhanov, A. A., and N. K. Zhumadillayev. "ETTI MERINOS – KAZAKHSTANI EXPORT-ORIENTED MEAT BREAD." REPORTS 335, no. 1 (February 12, 2021): 146–51. http://dx.doi.org/10.32014/2021.2518-1483.21.
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Sheep breeding in Kazakhstan is a traditional branch of animal husbandry. The development of the industry is facilitated by the presence of large areas of pasture lands, as well as the existing valuable gene pool of breed resources, created by national selection and long-term work of scientists-breeders. The republic has great potential for the further development of sheep breeding industry and is able not only to meet the population's need for mutton, but also to become a major exporter. The restoration and further development of domestic sheep breeding should be based on rational use of genetic potential of animals and natural pastures of the country for the cost-effective production of high quality sheep products that meet international standards. The article deals with the development of fine-wool sheep breeding in Almaty, Zhambyl and South Kazakhstan regions, improvement of meat characteristics of the South Kazakh merino. The experience of using "etti merino" rams-producers in farms of Turkestan region showed that meat merino rams have a positive effect on meat productivity of the South Kazakh merino, and at the same time do not worsen their wool characteristics. The information on the population number of sheep of "Etti Merino" breed for 2020, the class composition of the ewes on farms, productivity of rams-producers in a number of generations, assessment of the quality of the offspring of 6-7 month old rams, wool productivity of the breeding groups of female sheep are presented.
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Goncharenko, I. V., D. T. Vinnichuk, and N. V. Bogdanova. "Combining of dairy cattle and sheep breeding ‒ perspective or last choice?" Ukrainian Journal of Ecology 8, no. 1 (March 12, 2018): 838–44. http://dx.doi.org/10.15421/2018_282.
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<p><span lang="EN-US">The data presented gives ground for the expediency of the accelerated development of milk and meat sheep breeding in Ukraine, which is economically effectively combined with a dairy cattle breeding with an expanded reproduction of Holstein cattle, which milk quality does not yet fully meet the modern requirements. <span>The materials of in-house study on the quality of milk of H<span>olstein</span><span> cows breed </span>are summarized, the data of the physicochemical composition of sheep milk are given. The experience of studying the dairy productivity of sheep shows that this type of product is of significant importance in the overall balance of gross income of sheep breeding. Comparing a milk yield of a sheep with a milk yield of a dairy cow, not by the gross quantity of milk, but by its equivalents of chemical composition, we have: milk yields of 1 cow are equivalent to the yield of 4-6 sheep. The issues of sheep milk productivity with the purpose of production of sheep's milk and its processing should be reconsidered for obtaining valuable nutritious products - hard cheeses which have an export significance. </span>It is theoretically possible to combine and accelerate the development of cattle and sheep breeding with the formation of specialized dairy stock farming.</span></p>
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Abdulmuslimov, A. M., A. A. Khozhokov, A. R. Mirzaev, and Yu A. Yuldashbaev. "Live weight of rams of Dagestan mountain breed and crossbreeds obtained from crossing with rams of the Russian meat merino breed." Agrarian science, no. 2 (April 7, 2021): 29–32. http://dx.doi.org/10.32634/0869-8155-2021-345-2-29-32.
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Relevance and methods. The article considers the experience of studying the effect of crossing Kalmyk sheep and dorper sheep-breeders in order to increase meat productivity. Crossbred rams of the experimental group had better indicators than rams in the control group in terms of live weight, depending on the conditions of pasture maintenance. Dagestan has a fifth of the Russian sheep and goat population and a quarter of wool production. In this area sheep breeding has a unique specificity, twice a year cattle are driven from summer to winter pastures and back. The distance between the pasture areas is more than 570 km. Of the total number of sheep, 71.5% falls on the Dagestan mountain breed.Results. To further increase the level of profitability of fine-wool sheep breeding it is of great importance to develop research on the economic and useful characteristics of young Dagestani fine-wool sheep and their crossbreeds with Russian meat merino sheep, depending on the driving and pasture system of keeping.
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Ostapchuk, Pavel. "Breeds of sheep in the context of the historical development of the Sheep Breeding on the Crimean Peninsula." Agrarian Bulletin of the 210, no. 07 (September 21, 2021): 75–86. http://dx.doi.org/10.32417/1997-4868-2021-210-07-75-86.
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Abstract. To develop of sheep breeding in the selected region should be based on the most complete analysis of previous work with sheep breeds. This will allow to plan further stages in the industry. The purpose of the analysis was to study the origin, the main characteristics of sheep breeds on the Crimean Peninsula, their intensification and the purpose of their use on the basis of literary sources. The main research method is periodization, which allows us to analyze the breed composition of sheep in the studied time stages, which allows us to compare the features of the considered stages of the development of the industry on the peninsula. The results of the analysis indicate the fact that the sheep breeds in various historical periods of development of the Crimean Peninsula are an important element of sheep breeding described in the article. The fact that the coarse wool sheep breeding developed extensively and have been focused on getting from sheep's milk and mutton at the end of the XVIII century. Manufacturers in the XIX century on the production of fine wool accent give. Suitable types and breeds of sheep in the practice introduced are Electoral (sheep with superior wool), Electoral-and-Negretti, Negretti, Rambouillet and others. Production of sheep's milk and its products have occupied only peasant farms, where animals are were bred coarse wool and semi-fine wool breeds are Malych, Valachian and Tsigai. Sheep breeding industry develops intensively in the twentieth century in Crimea. Tsigai Breed sheep becomes of the planned. This breed is still the main on peninsula and the present time. The scientific novelty lies in the fact that for the first time a deep historical analysis of the evolution of sheep farming on the Crimean Peninsula since its entry into the Russian Empire at the end of the 18th century was carried out and recommendations for the further development of the industry were given.
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Farrell, Lydia J., Paul R. Kenyon, Stephen T. Morris, and Peter R. Tozer. "The Impact of Hogget and Mature Flock Reproductive Success on Sheep Farm Productivity." Agriculture 10, no. 11 (November 21, 2020): 566. http://dx.doi.org/10.3390/agriculture10110566.
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Breeding hoggets (ewe lambs aged four to 16 months) at 8 to 9 months of age has a number of potential benefits, including increased lamb production and profitability. However, the majority of hoggets in New Zealand are not bred due to producer concerns regarding their variable reproductive success and increased feed demand. Simulation modelling was used to quantify effects of hogget breeding on sheep numbers, lamb production, sheep feed demand, and sheep enterprise cash operating surplus (COS) compared with a flock not breeding hoggets. Hogget weaning rate (HWR) was modelled at 0%, 60%, 80%, and 100% and combined with mature ewe flock weaning rates (FWR) of 132% and 150%, while maintaining total annual sheep feed demand. For each FWR, increased HWR reduced total sheep numbers, increased the proportion of sheep feed demand for lamb production, increased total numbers of lambs weaned, and increased COS. Therefore, achieving even a relatively low HWR of 60% can improve sheep enterprise profitability for a given FWR. However, COS was lower with FWR = 132% and HWR = 100% than with FWR = 150% and HWR = 0%. The results indicate farmers who do not currently breed their hoggets may wish to improve their FWR before considering HWRs.
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Mehta, S. C., P. K. Vij, B. K. Joshi, R. Sahai, and A. E. Nivsarkar. "CONSERVATION OF THE SONADI BREED OF SHEEP IN INDIA." Animal Genetic Resources Information 16 (April 1995): 83–89. http://dx.doi.org/10.1017/s1014233900000535.
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SUMMARYA study was carried out to estimate the population of the Sonadi breed of sheep in the Chittorgarh district of Rajasthan (India), which is part of a major breeding tract of the Sonadi breed. A total of 2 443 sheep from 59 flocks of 18 villages belonging to three different tehsils of Chittorgarh were covered in this survey. The population data on sheep from livestock census (1992) were collected and the figures were extrapolated for the purpose. The population of Sonadi sheep in their natural habitat was estimated to be 603 984 while the total sheep population of the tract was 1 792 050. The estimated number of breeding rams available in the natural habitat were 45 907 out of which only 1 I 802 were of the Sonadi breed. There was a higher proportion of crossbred sheep and an even higher proportion of crossbred rams in the breeding tract as compared to the purebreds. It has been postulated that a proportion of cross bred sheep would further increase which coûld be a threat to the Sonadi breed in a real sense. It has been emphasized that steps for conservation are warranted.
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Page, Phillipa, Mike Evans, Clare Phythian, Natalia Vasileiou, and JP Crilly. "Mastitis in meat sheep." Livestock 26, no. 5 (September 2, 2021): 248–53. http://dx.doi.org/10.12968/live.2021.26.5.248.
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Mastitis in meat sheep occurs in all flocks, but incidence can vary. It can be a severe disease, resulting in ewe deaths, but chronic and subclinical cases also occur. It is a costly disease, but accurate assesments of the impact, especially of chronic and subclinical disease, are lacking. The most commonly involved pathogens are Mannheimia haemolytica and Staphylococcus aureus. The most important risk factors relate to compromise of teat defences, and increased transmission, but environmental cases do occur. Treatment of acute clinical cases requires systemic antibiosis and non-steroidal anti-inflammatory drug administration, and, where required, supportive care. Prevention involves tackling the risk factors, and using vaccination and breeding to reduce ewe susceptibility.
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Morris, S. T., and R. E. Hickson. "An overview of current and potential hill country livestock systems." NZGA: Research and Practice Series 16 (January 1, 2016): 309–15. http://dx.doi.org/10.33584/rps.16.2016.3236.
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This paper reviews current production trends for sheep and beef cattle production in New Zealand and gives some insight into the opportunities for improvement. The New Zealand climate favours pasture growth and this is the key to sheep and beef cattle production with over 95% of the diet being grazed pasture or crop. Exports are the focus of the industry with 92% of sheep meat and 82% of beef exported. There has been a 72% increase in sheep meat production since 1990, but there still remains opportunity for further increases through breeding sheep at an earlier age, increasing the weight of lambs weaned per ewe per year, increased efficiency of breeding cows and utilisation of calves from the dairy industry for beef production. Keywords: Sheep meat, beef cattle, pasture, intensification, environment
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Nieuwhof, G. J., and S. C. Bishop. "Opportunities for breeding for disease resistance in British sheep." Proceedings of the British Society of Animal Science 2005 (2005): 49. http://dx.doi.org/10.1017/s1752756200009601.
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Recently, the costs of eight sheep diseases were calculated by Bennett and IJpelaar (2003). The highest annual costs were estimated for enzootic abortions in ewes (EAE) £20 M and toxoplasmosis £12M. In a survey among its members, the Moredun Foundation (1997) identified internal parasites (GI parasites), sheep scab and footrot as the most important sheep diseases, but these three diseases were not analysed by Bennett and IJpelaar (2003). The aim of this study is to estimate the benefits of reductions in the incidence or severity of these diseases, using the methodology of Bennett et al. (1999), and the benefits of reductions in disease incidence or severity. From this, marginal economic values for resistance are calculated and applied in selection index scenarios that mimic current sheep breeding schemes.
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Lakota, E. А. "PRESERVATION OF GENETIC POTENTIAL OF STAVROPOL SHEEP BREED FOR POVOLZHYE DREY STEPPE ZONE." Vestnik of Ulyanovsk state agricultural academy, no. 3(50) (September 8, 2020): 179–84. http://dx.doi.org/10.18286/1816-4501-2020-3-179-184.
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In conditions of Povolzhye steppe zone development of productive qualities of Stavropol breed sheep was conducted by meat merino sheep. Experimental research was carried out in ZAO «Novaya Zhizn» in Novouzensky district of Saratov region, located in semi desert zone, bordering upon South-West Khazakhstan. The research aim was the increase and maintenance of genetic potential of Stavropol breed sheep of Povolzhye population. Working procedure is based on guidelines of the All-Union Academy of Agricultural sciences, All Union research institute of sheep and goat breeding. The study materials were Stavropol pure breed sheep and 1/8 –thoroughbred cross breed with Australian meat merino herdmates. As the result of stepped breeding of local Stavropol ewe with half bred by Australian meat merino ram- breeder of Stavropol breed animals of 1/2 ,1/4, 1/8 –blood were obtained, which then one- shear tupped by breeding «inter se». It is proved that in applying such selective method 1/8-blood by Australian meat merino sheep were characterized with higher body weight, better wool quality in contrast to Stavropol pure –breed herdmates. So, in 1/8-blood by Australian meat merino of hybrid ewe during breeding «inter se» live body at birth was higher than at pure breed herdmates for 5,56 %, during ablactation –at the age of 4 months - for 6,38 % (difference isn’t accurate). According to sharing of wool in grease, superiority of ewe of hybrid origin over pure breed was 5,6 % (Р≥0,99), but in terms of washed fiber it increases to 8,3 % (Р≥0,999). So, in dry steppe zone of Povolzhye new improved, according to its productive qualities, genotype of Stavropol breed sheep is created with retention of genetic resource that is essential economic factor for the modern maintenance of fine-wool sheep breeding field.
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Typylo, K. "Karyotype variability of the Ukrainian Mountain-Carpathian sheep breed." Agricultural Science and Technology 12, no. 1 (March 2020): 3–5. http://dx.doi.org/10.15547/ast.2020.01.001.
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Abstract. The main purpose of this work was to describe the karyotype variability of the Ukrainian Mountain-Carpathian sheep breed. Cytogenetic studies were carried out on a group of 25 sheep from that breed. The cultivation of lymphocytes, preparing the cytogenetic samples, classification and registration of chromosome aberrations were held using conventional methods. It was established that the number and structure of the chromosomes of sheep of the Ukrainian Mountain-Carpathian breed correspond to the norm typical for this species of animals. Chromosomal variability of the studied population includes 19.22% of numerical and structural aberrations. By the number and structure of the chromosome set the Ukrainian Mountain-Carpathian sheep breed does not differ from other breeds of sheep. Accurate identification of individual chromosomes with routine coloring allows using cytogenetic studies in breeding practice in sheep breeding.
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Akhmet Abdirazakovich Urimbetov. "REPRODUCTIVE POTENTIAL OF THE KARAKUL SHEEP SHEEP OF THE KARAKALPAK BREED TYPE DEPENDING ON THE CONDITIONS IN THE NORTHWEST OF KYZYLKUM." Middle European Scientific Bulletin 6 (November 11, 2020): 67–70. http://dx.doi.org/10.47494/mesb.2020.6.111.
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The article describes the methods of increasing the breeding productivity of Karakul sheep of the Karakalpak breed type, depending on the diet and seasonality of the sheep's nutrition for the mating period in the North-West Kyzylkum desert. Karakul breeding is the most important branch of agriculture in Karakalpakstan, therefore it is very important to increase the number of livestock, and the mating of Karakul sheep is a very important point in animal breeding. The object of research was the herds of sheep of the Karakalpak breed type in the breeding farm in the North-West Kyzyl Kum. The results of the study of the reproductive potential of sheep showed that in order to increase the number of pregnant queens one and a half months before the planned measures for insemination or mating, enhanced feeding of the sheep and a sufficient amount of balanced and succulent green fodder is necessary. Sheep also need concentrated feed of at least kg per head per day. The individual characteristics of the animals were also taken into account to determine the best time for insemination. For this, constant supervision over the behavior of the tribal members of the herd was organized. Observations also showed that the hunting period in sheep lasts for 1-2 days. and is repeated after 3 weeks. The seasonality of sexual hunting is most associated with autumn and the beginning of winter. In extreme heat and severe cold, hunting is weak.