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Journal articles on the topic 'Reproductive performance parameters'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Jagtap H. S, Jagtap H. S., and S. S. Kulkarni S. S. Kulkarni. "Evaluation of Reproductive Performance and Morphometric Parameters of Goldfish, (Carassius Auratus)." International Journal of Scientific Research 2, no. 7 (2012): 524–25. http://dx.doi.org/10.15373/22778179/july2013/182.

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Brash, LD, NM Fogarty, and AR Gilmour. "Reproductive performance and genetic parameters for Australian Dorset Sheep." Australian Journal of Agricultural Research 45, no. 2 (1994): 427. http://dx.doi.org/10.1071/ar9940427.

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Reproductive performance of ewes in a large Dorset stud flock is reported. The data included 2488 ewes with 10016 joining records over 25 years. Average performance for reproductive traits were: fertility 92%, litter size 1.31, neonatal lamb survival 91%, lamb survival to weaning 85%, with overall lambs born 1.20 and lambs weaned 1.02 per ewe joined. Differences between breeds (Poll Dorset and Dorset Horn), season of birth (spring and autumn) and season of joining (spring and autumn) were significant for most reproduction traits. Linear and quadratic regressions for age of ewe at joining were

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Marelli, Stefano Paolo, Ahmad Abdel Sayed, Michele Magni, et al. "Reproductive parameters in some captive-bred cockatoo species (genus Cacatua and Eolophus)." Veterinary Record Open 7, no. 1 (2020): e000405. http://dx.doi.org/10.1136/vetreco-2020-000405.

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BackgroundCockatoo reproduction in captivity supplies a powerful tool to limit the economic motivation to capture endangered species from the wild; nevertheless, scientific data about reproductive parameters in cockatoos are very rare. The aim of the present work was to investigate the reproductive performance of different species of the Cacatua genus reared in the same facility to evaluate adaptability to captive breeding and to identify the main problems in ex situ conservation of some cockatoo species.MethodsData of 28 eggs from 19 reproductive pairs from 9 cockatoo species were analysed. S

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Phocast, F., and J. Sapa. "Genetic parameters for growth, reproductive performance, calving ease and suckling performance in beef cattle heifers." Animal Science 79, no. 1 (2004): 41–48. http://dx.doi.org/10.1017/s1357729800054515.

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AbstractThere is considerable concern about the consequences on fitness-related traits of using narrow breeding objectives for production traits. The aim of this study was to assess the potential consequences of selection for growth in French beef cattle breeds by estimating genetic correlations between growth, reproduction, calving and suckling traits of Charolais, Limousin and Blonde d’Aquitaine heifers. Data consisted of the records collected from 1985 to 2002 in progeny test stations that were used in the genetic evaluation of 284 Charolais, 125 Limousin and 118 Blonde d’Aquitaine AI sires

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Christi, Raden Febrianto, Didin S. Tasripin, and Arin Rinaldi. "Performa Reproduksi Sapi Perah Fries Holland Pada Laktasi 1 Di PT. Ultra Peternakan Bandung Selatan." Composite: Jurnal Ilmu Pertanian 3, no. 01 (2021): 34–41. http://dx.doi.org/10.37577/composite.v3i01.308.

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Reproduction management is one of the important things in a dairy farming business because good reproductive management, along with high reproductive capacity, will increase the efficiency and productivity of livestock. This study aims to determine the reproductive performance of FH dairy cows at first lactation on first mating post partus, service per conception, days open, calving interval, coception rate, calving rate and fertility status. The results of the research showed reproductive performance with parameters first mating post partus 59.5 days, service per conception 4.5 times, days op

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Rosa, J. O., G. C. Venturini, T. C. S. Chud, et al. "Bayesian inference of genetic parameters for reproductive and performance traits in White Leghorn hens." Czech Journal of Animal Science 63, No. 6 (2018): 230–36. http://dx.doi.org/10.17221/116/2017-cjas.

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This study estimated the genetic parameters for reproductive and performance traits and determined which ones can be used as selection criteria for egg production in laying hens using the Bayesian inference. The data of 1894 animals from three generations of White Leghorn laying hens were analyzed for fertility (FERT), hatchability (HATC), and birth rate measurements at 60 weeks of age (BIRTH), body weight at 16 and 60 weeks of age (BW16 and BW60), age at sexual maturity (ASM), egg height/width ratio, weight, and density at 28, 36, and 40 weeks of age (RHW28, RHW36, RHW40, WEGG28, WEGG36, WEGG

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Valipour, Shafagh, Karim Karimi, and Younes Miar. "47 Genomic Studies of Reproductive Performance in American Mink." Journal of Animal Science 99, Supplement_3 (2021): 26–27. http://dx.doi.org/10.1093/jas/skab235.045.

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Abstract Improving reproductive efficiency is one of the main breeding goals in mink farming. Understanding the genetics of reproductive performance is essential for the development of effective breeding programs in mink. The objectives of this study are to 1) estimate the phenotypic and genetic parameters for litter sizes (LS), mortality rate at birth. (MB) and gestation-length (GL) traits; 2) perform genome-wide association studies (GWAS) for these reproductive traits; 3) implement GWAS results in the selection of mink for reproductive performance; 4) explore the potential for genomic select

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Sheiko, I. P., T. N. Timoshenko, E. A. Yanovich, A. C. Burnos, A. S. Petrushko, and A. A. Putik. "PARAMETERS OF ANIMAL PERFORMANCE IN FOUR-BREEDS CROSSING." Transactions of the educational establishment “Vitebsk the Order of “the Badge of Honor” State Academy of Veterinary Medicine 60, no. 1 (2024): 93–99. http://dx.doi.org/10.52368/2078-0109-2024-60-1-93-99.

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A high combinability of YxL sows crossed with LxD, YxD and DxP boars was revealed. Prolificacy rate, milk yielding capacity, number of piglets and litter weight at weaning were 12.7-13.4 heads, 68.9-72.0 kg, 11.5 - 11.8 heads and 94.5-98.3 kg, respectively. The variability of reproductive traits was within 3.0-21.3%, depending on the trait and breed combination. A high positive correlation between milk yielding capacity and litter weight at weaning (r=0.85- 0.92), litter weight and number of piglets at weaning (r=0.84-0.93) was found. In a single-factor complex of variance analysis of reproduc

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9

Knecht, Damian, and Anna Jankowska-Mąkosa. "Endoparasites in Sows and Selected Reproduction Parameters." Acta Veterinaria 70, no. 1 (2020): 71–80. http://dx.doi.org/10.2478/acve-2020-0005.

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AbstractThe aim of the study was to analyze infection of sows with endoparasites depending on their physiological phase and length of exploitation, as well as to determine the effects of infection on selected parameters of reproductive performance. 300 fecal samples collected from the same 75 sows in 4 phases of the production cycle (dry sows, low pregnancy, high pregnancy, lactation) were tested in the experiment. Species and gender diversity, prevalence, OPG and EPG were determined in the study. These parameters were compared in terms of the physiological phase and the length of exploitation

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Nevrkla, Pavel, Zdeněk Hadaš, and Pavel Horký. "Effect of Minimal Disease in a Herd on Reproductive Parameters of Sows." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 65, no. 4 (2017): 1247–51. http://dx.doi.org/10.11118/actaun201765041247.

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The aim of this study was evaluation of reproductive performance in sows from herds with minimal disease. Total number of 40 sows were included in the observation and evaluated from the 1st to the 4th parity. The highest reproductive performance was recorded at the 3rd parity. Statistically significant difference (P < 0.05) was found between the 1st and the 3rd parity and highly statistically significant difference (P < 0.01) was recorded between the 2nd and the 3rd parity in number of live‑born piglets. Comparison of numbers of stillborn piglets showed statistically significant differen

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11

Prunier, A., J. Y. Dourmad, and M. Etienne. "Feeding level, metabolic parameters and reproductive performance of primiparous sows." Livestock Production Science 37, no. 1-2 (1993): 185–96. http://dx.doi.org/10.1016/0301-6226(93)90071-o.

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Ververs, C., M. Hostens, M. van Zijll Langhout, M. Otto, J. Govaere, and A. Van Soom. "109 REPRODUCTIVE PERFORMANCE PARAMETERS IN A LARGE HERD OF CONFINED FREE-ROAMING WHITE RHINOCEROSES (CERATOTHERIUM SIMUM)." Reproduction, Fertility and Development 29, no. 1 (2017): 163. http://dx.doi.org/10.1071/rdv29n1ab109.

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During the last decade, the population of wild white rhinoceroses has been in steady decline, mainly because of increased poaching incidents and habitat loss. Therefore, more data are necessary on reproduction of this endangered species in order to improve captive breeding, which is at present not very successful. Currently, ~20,000 Southern white rhinoceroses are remaining of which the majority are privately owned. The aim of this study was to create reference values of several reproductive parameters for future white rhinoceros breeding. In previous studies, only low numbers of animals have

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13

Nowaczewski, S., and H. Kontecka. "Effect of dietary vitamin C supplement on reproductive performance of aviary pheasants." Czech Journal of Animal Science 50, No. 5 (2011): 208–12. http://dx.doi.org/10.17221/4150-cjas.

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The effects of three doses of vitamin C (100, 200 and 300 mg/kg) added to the feed of reproductive pheasants on egg production, egg fertility and parameters of hatchability were investigated. In experiments I (1999) and II (2000) birds were kept in outdoor aviaries. In 2000, air temperatures recorded on the farm during the experiment were high (25&ndash;30<sup>o</sup>C), differing considerably from those recorded in the preceding years. In experiment I no statistically significant differences were shown between the control pheasants and those supplemented with 100 and 200 mg/kg

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14

Elieser, Simon, Sumadi ., G. Suparta, and Subandriyo . "Reproductive performances of Boe, Kacang and Boerka does." Jurnal Ilmu Ternak dan Veteriner 17, no. 2 (2013): 100–106. https://doi.org/10.14334/jitv.v17i2.683.

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Does reproduction performance could be expressed by her ability to give birth and to give milk to their kids during the pre-weaning period. This study was aimed to evaluate the reproductive performance of Boer, Kacang and Boerka does; and was carried out for two years at Research Institute for Goat Production, Sungei Putih. The materials used were goats owned by the institute. The parameters observed were: litter size, parity of does, preweaning mortality, kidding interval and sex ratio of kids. The rate of reproduction of the does was estimated using Amir and Knipscheer methods and were stati

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Reswati, R., BP Purwanto, R. Priyanto, W. Manalu, and R. I. Arifiantini. "Reproductive performance of female swamp buffalo in West Sumatra." IOP Conference Series: Earth and Environmental Science 748, no. 1 (2021): 012025. http://dx.doi.org/10.1088/1755-1315/748/1/012025.

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Abstract The swamp buffalo population in West Sumatra Province decline continuously due to the low female reproductive performance. This research was conducted to identify female buffalo reproductive performance, which could be used as baseline data to enhance its population growth. A survey research method was conducted in two subdistricts, namely Lubuk Basung and Matur, located at different altitudes. Data were collected by interviewing farmers and observing their farms. The parameters observed were age at first mating, age at first calving, calving interval, service per conception, and buff

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Sharawy, S.M, N.H Saleh, M.E Ghanem, and S.T Hassan. "Effect of different treatments at early postpartum period on uterine involution and subsequent reproductive performance in dairy cows." Global Animal Science Journal 2, no. 2 (2015): 1301–7. https://doi.org/10.5281/zenodo.19323.

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  The objective of this study was to investigate the effectiveness of PGF2α and GnRH injections at early lactation on placental drop, uterine involution and subsequent reproductive performance in dairy cows. The study was conducted in El-Salhya dairy cattle breeding farm on 64 lactating dairy cows. Cows were assigned into the following groups: PGF2α treated group (18 cows), received PGF2α immediately after calving. GnRH treated group (17 cows), received GnRH analogue on 13-15 day postpartum (pp). PGF2α plus GnRH treated group (15 cows), received PGF2α immedia

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Sharawy, S.M, N.H Saleh, M.E Ghanem, and S.T. Hassan. "Effect of different treatments at early postpartum period on uterine involution and subsequent reproductive performance in dairy cows." Global Animal Science Journal 2, no. 2 (2015): 1301–7. https://doi.org/10.5281/zenodo.21950.

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The objective of this study was to investigate the effectiveness of PGF<sub>2</sub>α and GnRH injections at early lactation on placental drop, uterine involution and subsequent reproductive performance in dairy cows. The study was conducted in El-Salhya dairy cattle breeding farm on 64 lactating dairy cows. Cows were assigned into the following groups:  PGF2α treated group (18 cows), received PGF2α immediately after calving. GnRH treated group (17 cows), received GnRH analogue on 13-15 day postpartum (pp). PGF2α plus GnRH treated group (15 cows), received PGF2&alph

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18

Sharawy, S.M., N.H. Saleh, M.E. Ghanem, and S.T. Hassan. "Effect of different treatments at early postpartum period on uterine involution and subsequent reproductive performance in dairy cows." Global Animal Science Journal 2, no. 2 (2015): 1301–7. https://doi.org/10.5281/zenodo.21958.

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The objective of this study was to investigate the effectiveness of PGF<sub>2</sub>α and GnRH injections at early lactation on placental drop, uterine involution and subsequent reproductive performance in dairy cows. The study was conducted in El-Salhya dairy cattle breeding farm on 64 lactating dairy cows. Cows were assigned into the following groups:  PGF2α treated group (18 cows), received PGF2α immediately after calving. GnRH treated group (17 cows), received GnRH analogue on 13-15 day postpartum (pp). PGF2α plus GnRH treated group (15 cows), received PGF2&alph

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19

Sharawy, S.M, N.H Saleh, M.E Ghanem, and S.T. Hassan. "Effect of different treatments at early postpartum period on uterine involution and subsequent reproductive performance in dairy cows." Global Animal Science Journal 2, no. 2 (2015): 155–61. https://doi.org/10.5281/zenodo.27225.

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The objective of this study was to investigate the effectiveness of PGF<sub>2</sub>α and GnRH injections at early lactation on placental drop, uterine involution and subsequent reproductive performance in dairy cows. The study was conducted in El-Salhya dairy cattle breeding farm on 64 lactating dairy cows. Cows were assigned into the following groups:  PGF2α treated group (18 cows), received PGF2α immediately after calving. GnRH treated group (17 cows), received GnRH analogue on 13-15 day postpartum (pp). PGF2α plus GnRH treated group (15 cows), received PGF2&alph

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20

Sinapov, Branimir, and Stanimir Yotov. "Relationship between Some Kinematic Parameters of Ram Semen and Reproductive Performance of Dairy Sheep after application of assisted Reproductive Technologies." International Journal of Current Microbiology and Applied Sciences 12, no. 9 (2022): 307–17. http://dx.doi.org/10.20546/ijcmas.2023.1209.030.

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Aim of this study was to investigate the relationship between some kinematic parameters of ram semen and reproductive performance of dairy sheep after application of assisted reproductive technologies. The experiment was carried out with8 rams and 325 sheep from East Friesian breed and 7 rams and 162 sheep from Asaaf breed. Semen was collected by artificial vagina and subjected to primary assessment. Kinematic sperm parameters TM, PM, NPM, IS, VAP, VCL, VSL, LIN and STR were evaluated by computer-assisted semen analysis (CASA). All sheep were subjected to estrus synchronization by intravaginal

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Stanimir, DIMITROV, T. PALLAS ALONSO Rafael, and BONEV Georgi. "REPRODUCTIVE PERFORMANCE OF GILTS SYNCHRONIZED WITH ALTRENOGEST." Contemporary Agriculture (2015) 64, no. 3-4 (2015): 230–34. https://doi.org/10.5281/zenodo.5813331.

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The introduction of gilts into herds is a key element of management in commercial pig farms and this requires an efficient method for estrus synchronization of young animals. In this case the objective of this study was to evaluate the efficacy of Altrenogest treatment on reproductive performance of synchronized gilts in comparison with nonsynchronized animals depending of the age and the live weight of the animals. Two hundred sixty and two gilts were randomly assigned to two different groups: control group (55) and treated group (207) receiving 20 mg. of Altrenogest for 18 consecutive days.

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Kleemann, David O., Simon K. Walker, Raul W. Ponzoni, et al. "Effect of previous reproductive performance on current reproductive rate in South Australian Merino ewes." Animal Production Science 56, no. 4 (2016): 716. http://dx.doi.org/10.1071/an15114.

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Reproductive performance of ewes in the current year may be influenced by their performance in the previous year and by the ability of seasonal and management conditions to facilitate full recovery before the next breeding cycle. This possibility was tested by analysing reproductive data from 2100 South Australian Merino ewes mated to Merino rams annually from 1991 to 1997. The model fitted to the data included the fixed effects of previous reproductive performance (PRP) (no lambs born; single or multiple lambs born, none reared; single lambs born, singles reared; multiples born, singles reare

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Knecht, Damian, Sebastian Środoń, and Katarzyna Czyż. "Does the Degree of Fatness and Muscularity Determined by Ultrasound Method Affect Sows’ Reproductive Performance?" Animals 10, no. 5 (2020): 794. http://dx.doi.org/10.3390/ani10050794.

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The fatness and muscularity of Polish Landrace, Polish Large White gilts and sows and their hybrids were determined on the basis of ultrasound measurements in three consecutive parities, and then the relationship between these parameters and reproductive performance was established. Ultrasound measurements demonstrated the highest fat thickness in first parity and the highest fat area over LD muscle in hybrid gilts (PL × PLW). Pure-bred gilts were characterized by poorer muscularity. Fatness level affected the reproductive parameters of females in which the thickness of backfat in UP2 point wa

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Taherti, Mourad, and Rachid Kaidi. "Reproductive performance and numerical productivity of Ouled Djllal ewes." Lebanese Science Journal 19, no. 1 (2018): 47–58. http://dx.doi.org/10.22453/lsj-019.1.047-058.

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In order to measure the reproductive performances and numerical productivity of Ouled Djellal ewes, and to determine the influence of non-geneticfactors onthese parameters, a database wasestablished, by monitoring 2710 ewes, belonging to 12 farms, representative of two dominant modes of reproduction in the Chlef region. Body condition scores (BCS) of groups ofewes put in reproduction were carried out to compare the performances under breedingconditions. Thestudy showed a fertility and prolificacy of 91.04% and 115.35% in the breeding mode of lambing per year in spring, against 59.35% and 103%

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Athorn, R. Z., K. L. Bunter, and J. R. Craig. "Early lifetime performance parameters affecting selection and reproductive success in gilts." Animal Production Science 57, no. 12 (2017): 2466. http://dx.doi.org/10.1071/anv57n12ab141.

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Orji, B. I., J. Steinbach, E. A. Olaloku, and I. O. A. Adeleye. "The Reproductive Performance of the Nigerian Dwarf Sheep." Nigerian Journal of Animal Production 3, no. 2 (2021): 124–30. http://dx.doi.org/10.51791/njap.v3i2.2522.

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THREE of the most important parameters of reproduction in sheep, the age at first lambing, the lambing interval and the number of lambs born per ewe at each lambing, were analysed from the herdbook of the breeding flock of the University of Ibadan for the period - 1968 to 1974. The means were as follows:  1. age at first lambing: 424.9 (310-363 days) 2. lambing interval: 234.4 (151-571 days) 3. number of lambs at birth 1.4 (1-3) Of the 603 lambings recorded, 38 percent resulted in twins and 4 percent in triplets. The percentage of multiple births increased with the numb

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Harlioğlu, Muzaffer Mustafa, Filiz Kutluyer, and Seyfettin Gür. "An investigation on the sperm number and reproductive parameters of males in wild caught freshwater crayfish (Astacus leptodactylus, Eschscholtz)." Animal Biology 62, no. 4 (2012): 409–18. http://dx.doi.org/10.1163/157075612x638559.

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In the present study, the sperm number of wild caught Astacus leptodactylus was counted in the beginning of reproduction season. In addition, the reproductive system, testes, and vasa deferentia were weighed, and gonado-somatic index and testicular index were calculated. Twenty-five adult males of A. leptodactylus were used for the study. Significant linear regressions were found between body length (and weight) and sperm count, reproductive system weight, testes weight and vasa deferentia weight (). The mean sperm number of vas deferens for the size range of 41-56 mm carapace length crayfish

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Toghiani, S. "Genetic relationships between production traits and reproductive performance in Holstein dairy cows." Archives Animal Breeding 55, no. 5 (2012): 458–68. http://dx.doi.org/10.5194/aab-55-458-2012.

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Abstract. In order to estimate genetic parameters for production traits and reproductive performance, 115465 records of production traits and 90942 records of reproductive performance from Iranian Holstein cows that were collected during 1980 to 2004 at Animal Breeding Center of Iran, were used. The estimations were performed using Restricted Maximum Likelihood method (REML) under an animal model by DF-REML and MATVEC software. Estimates of heritabilities for production traits were moderate, from 0.149 for fat yield to 0.26 for milk yield. Heritabilities for reproductive performance were low,

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Newton, J. E., D. J. Brown, S. Dominik, and J. H. J. van der Werf. "Genetic and phenotypic parameters between yearling, hoggetand adult reproductive performance and age of first oestrus in sheep." Animal Production Science 54, no. 6 (2014): 753. http://dx.doi.org/10.1071/an13245.

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The aims of this study were to quantify the relationship between age of first oestrus and yearling reproductive performance in maternal-cross ewes in the Information Nucleus Flock data and to estimate genetic and phenotypic correlations between early and later reproductive performance defined as three ages, yearling, hogget and adult in both Merino and maternal-cross ewes. Information on 2218 yearling records, 2047 hogget records and 910 age of first oestrus records were used in the analysis of maternal-cross ewes, whereas 3286 hogget and 2518 adult reproductive records were used in analysis o

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Knecht, D., S. Środoń, and K. Duziński. "The impact of season, parity and breed on selected reproductive performance parameters of sows." Archives Animal Breeding 58, no. 1 (2015): 49–56. http://dx.doi.org/10.5194/aab-58-49-2015.

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Abstract. The aim of the study was to identify the detailed impact of the season, parity and breed on reproductive performance of sows. The experimental material consisted of 2100 sows, in 3 breed variants: 700 PL, 700 PLW, 700 crossbreeds PL × PLW. Sows were observed until parity 5. In the context of the breed, depending on the order of parity groups of 140 sows were isolated. Then, sows were divided in terms of farrowing season into subgroups numbering 35 sows. At the age of 8 months gilts were allocated for reproduction performance. The highest seasonal impact was noted for piglet birth wei

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Tecirlioglu, R. T., M. A. Cooney, N. A. Korfiatis, et al. "68 REPRODUCTIVE PERFORMANCE OF CLONED BULLS." Reproduction, Fertility and Development 17, no. 2 (2005): 184. http://dx.doi.org/10.1071/rdv17n2ab68.

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The generation of cloned animals by somatic cell nuclear transfer has been reported in a number of countries worldwide. However, progress has been impeded by the extremely low efficiency of cloning and health of some of the cloned animals. Surprisingly, little is known of the reproductive performance of viable clones when compared to the original cell donor, given that a major motivation of cloning is dissemination of superior genotypes. The aim of this study was to compare semen collected from three cloned bulls (Clones A1, B1, and B2) to that of the original donor bulls (Donors A and B). Par

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Morant, S. V. "A stochastic model of the reproductive performance of dairy herds." Journal of Agricultural Science 104, no. 3 (1985): 505–12. http://dx.doi.org/10.1017/s0021859600044269.

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SummaryA model of reproductive performance in dairy herds is described. The model relies upon no empirical relationships but is constructed from a series of simple stochastic processes involving only three principal parameters: ovulation detection rate, pregnancy rate and embryo loss rate. The model shows how the complex interactions between these parameters and management policy concerning the definition of the service period are generated.

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Hoffman, Richard W., M. Page Luttrell, and William R. Davidson. "REPRODUCTIVE PERFORMANCE OF MERRIAM'S WILD TURKEYS WITH SUSPECTED MYCOPLASMA INFECTION." Wildlife Society Bulletin 1995, S1 (1995): 145–51. https://doi.org/10.1002/j.2328-5540.1995.tb00224.x.

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Abstract: Mycoplasma spp. infections may suppress wild turkey populations through subtle changes in reproductive performance. As part of an investigation of Mycoplasma spp. infections in a population of Merriam's wild turkeys (Meleagris gallopavo merriami) in west‐central Colorado, we measured reproductive parameters of 111 (50 adults, 61 subadults) radio‐marked hens during 1992‐93. Serologic testing using the rapid plate agglutination (RPA) assay disclosed seroreactors to three pathogenic mycoplasmas: M. gallisepticum (MG), M. synoviae (MS), and M. meleagridis (MM). However, cultural surveys

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Santos, Marcos Paulo dos, Marcelo Marcondes de Godoy, Cleber Luiz de Sousa, Roberta de Moura Assis, and Cassius Vinicius Barbosa Sena. "Productive and reproductive performances of Santa Inês ewes fed diets supplemented with protected fat in the postpartum." Pesquisa Agropecuária Brasileira 52, no. 7 (2017): 548–56. http://dx.doi.org/10.1590/s0100-204x2017000700009.

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Abstract: The objective of this work was to evaluate the effect of the inclusion of protected fat in the concentrate on the productive and reproductive performances of Santa Inês ewes in feedlot, up to 60 days after parturition. Thirty-six pregnant Santa Inês ewes, with an average age of 24 months and initial weight of 46.54±7.87 kg, were used. A completely randomized experimental design was used, with three treatments: CS, concentrated supplement; G5, concentrated supplement with 5.5% protected fat (PF); and G10, concentrated supplement with 13.5% PF. The productive performance parameters wer

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Vizzarri, Francesco, Sara Chiapparini, Carlo Corino, et al. "Dietary Supplementation with Natural Extracts Mixture: Effects on Reproductive Performances, Blood Biochemical and Antioxidant Parameters in Rabbit Does." Annals of Animal Science 20, no. 2 (2020): 565–78. http://dx.doi.org/10.2478/aoas-2019-0084.

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AbstractThe present study evaluates the effects of natural extracts on reproductive performance, haematochemical parameters, and antioxidant status of rabbit does. A total of sixty New Zealand White second parity does were divided into three groups: the first group was fed a control diet (CON), the second (T1) and the third groups (T2) were fed the same diet supplemented with prebiotic polysaccharides from brown seaweeds (Laminaria spp.) plus phenolic acid, hydroxycinnamic acids, tannins, and flavonoids from plant extracts (0.3% and 0.6%, respectively). The trial was conducted for two consecut

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KUNDU, M. S., P. PERUMAL, S. K. RAVI, et al. "Evaluation of reproductive and production performance of Nicobari pig under humid tropical island ecosystem." Indian Journal of Animal Sciences 90, no. 7 (2020): 1048–53. http://dx.doi.org/10.56093/ijans.v90i7.106680.

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Nicobari pig is semi-feral, reared in free-range system with very low level of management. However, its population has been significantly reduced due to and after Tsunami in 2004. No systematic study has been conducted to explore the production potential of Nicobari pig. Therefore, a systematic comparison study was conducted between intensive and free-range system on growth and reproductive parameters in ICAR-CIARI, Port Blair. Reproductive parameters like age at first mating in male and age at first oestrus, oestrus cycle duration, oestrous duration, age at first mating, age at first farrowin

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Ojatula, Adekunle. "INVESTIGATING THE EFFECTS OF PAUSINYSTALIA YOHIMBE AQUEOUS LEAVES EXTRACT ON PARAMETERS FOR REPRODUCTIVE PERFORMANCE IN EXPERIMENTAL RATS." Ethiopian Journal of Reproductive Health 16, no. 2 (2024): 12. http://dx.doi.org/10.69614/ejrh.v16i2.765.

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ABSTRACT BACKGROUND: Herbal plants and herbal preparations are widely used as immunomodulatory medicines that helps in improving reproductive health in humankind, and they are globally used and have rapidly grown in economic developmental importance. OBJECTIVE: The study was conducted to investigate the effects of the aqueous extract of P. yohimbe leaves on sexual reproductive performance in Wistar rats. The primary outcome of the study is the reproductive performance sexual rate. METHODS: The experimental study was carried out on albino rats of the Wistar strain, weighing between 150 and 200g

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KISHI, Kurajiro, Susumu KANAMORI, Toshiyuki MARUYAMA, et al. "Potential parameters of male reproductive toxicity: reproductive performance, histopathology and sperm evaluation in SD rats given nitrazepam." Journal of Toxicological Sciences 20, no. 3 (1995): 329–39. http://dx.doi.org/10.2131/jts.20.329.

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Gautam, Gokarna, and Ujjwal Khadka. "Reproductive and Productive Performance of Crossbred and Terai Cattle in Bardiya District of Nepal." Journal of Nepal Agricultural Research Council 8 (May 9, 2022): 64–71. http://dx.doi.org/10.3126/jnarc.v8i.44862.

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To compare the reproductive and productive performance of exotic crossbreds and indigenous Terai cattle under farmers' management condition, a household survey was carried out in 218 households of Bardiya, Nepal. Total of 262 cows [Jersey cross (n=107), Holstein cross (n=24) and indigenous Terai cattle (n=131)] were considered to determine the production and reproduction parameters. The age at first calving in months was the lowest in Jersey crossbred (27.8±1.8) followed by Holstein cross (29.5±4.0) and Terai cattle (45.7±3) (P<0.05). However, the number of services per conception, calving

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Laflamme, L. F., and M. L. Connor. "Effect of postpartum nutrition and cow body condition at parturition on subsequent performance of beef cattle." Canadian Journal of Animal Science 72, no. 4 (1992): 843–51. http://dx.doi.org/10.4141/cjas92-096.

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Seventy-two cows were used in each of 2 yr to study the effect of body condition (BC) and postpartum grain feeding on cow and calf weights and on reproductive traits. Cows reached a BC score of 4 or 6 by parturition and were fed 0 or 4 kg mixed grain d−1 during the postpartum period. All cows were fed grass silage throughout the trial. Grain feeding had no effect on weight gains but increased BC of the lactating cows. Presence of ovarian follicles, uterine involution and pregnancy rate were the only reproductive parameters generally affected by grain feeding. Body condition score had no effect

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Odjigue, Nestor, Madjina Tellah, Félix Tamya, Brice Tchang, Michel Assadi, and Mama Baizina. "Impact of Feeding Practices on the Reproductive Performance of <i>Kirdimi</i> Goats in the Department of Tandjilé-Center, Chad." American Journal of Zoology 7, no. 4 (2024): 76–83. https://doi.org/10.11648/j.ajz.20240704.13.

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The objective of this study was to determine the reproductive parameters of &lt;i&gt;Kirdimi&lt;/i&gt; goats in relation to feeding practices in the department of Tandjilé-Center, in southern Chad. The study was conducted between April 2022 and January 2023 by monitoring 107 goats on 35 farms. The choice of animals was made according to the type of feeding practices implemented by the agro-pastoralists and are concerned, as the goats have given birth at least once. Reproduction data are collected once a month by the monitoring officer using an individual goat monitoring sheet a

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Jafari, Shoja, and Ghader Manafiazar. "Estimates of genetic parameters for lifetime reproductive performance traits in Makuie ewes." Small Ruminant Research 139 (June 2016): 67–72. http://dx.doi.org/10.1016/j.smallrumres.2016.05.006.

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Knecht, D., S. Środoń, and K. Duziński. "Does a Boar's Season of Birth Determine Semen Parameters and Reproductive Performance?" Reproduction in Domestic Animals 49, no. 2 (2013): 183–90. http://dx.doi.org/10.1111/rda.12258.

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Oliveira, Amanda Medeiros Araújo de, Ednardo Rodrigues Freitas, Denise Batista Nogueira, et al. "Beta-Carotene Supplementation for Sows: Reproductive Parameters and Productive Performance of Piglets." Animals 13, no. 23 (2023): 3730. http://dx.doi.org/10.3390/ani13233730.

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The rapid fetal development and the increased demand for milk result in a catabolic state and oxidative stress in hyperprolific sows. Despite animal defense mechanisms, the dietary supplementation of antioxidants is being evaluated to reduce the impacts of excess free radicals. The aim of this study was to evaluate the short- and long-term effects of beta-carotene supplementation for sows on the reproductive response and performance of suckling piglets. A total of 120 sows were distributed in a 3 × 4 factorial arrangement of three supplementation levels (B0–no supplementation, B200–200 mg beta

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Pramod Kumar,, Gangadhar Nanda, Pradeep Kumar Ram, Mritunjay Kumar, and Anandamoy Kundu. "Effect of feeding maize silage on production performance in dairy cows." International Journal of Agricultural Invention 9, no. 1 (2024): 305–10. https://doi.org/10.46492/ijai/2024.9.1.39.

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Dairy farming is one of the important sectors of agriculture which is growing at faster rate and is providing food security, employment, income, and enhances the living condition of farmers and other stake holders. Silage is an alternative source of green fodder for round the year supply of roughage to dairy animals to sustain better production and reproductive performance over conventional feeding practices. The feeding trial was conducted to evaluate the effect of feeding maize silage on the production and reproduction parameters, in two phases. In first phase 59 lactating animals were fed 2

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Nastiti, Nimas Alifia, Joko Riyanto, Ratih Dewanti, et al. "Reproduction and Production Performance of Swamp Buffalo (Bubalus bubalis) at the Small-Scale Holder Farmer in Sragen Regency, Central Java, Indonesia." Jurnal Sain Peternakan Indonesia 18, no. 3 (2023): 140–47. http://dx.doi.org/10.31186/jspi.id.18.3.140-147.

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This research aimed to determine the performance of swamp buffalo reproduction and production at the small-scale holder farmer in Sragen Regency, Central Java, Indonesia, from June to September 2021. The method used in this research was a survey with a census (complete) sample determination. Data collection applies to interviews, observations and literature studies. Research parameters used in reproductive performance were calving interval (CI), service per conception (S/C), age of the first estrus, age of first birth and postpartum estrus. In contrast, production performance parameters were c

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Ayo, J. O., J. A. Obidi, and P. I. Rekwot. "Effects of Heat Stress on the Well-Being, Fertility, and Hatchability of Chickens in the Northern Guinea Savannah Zone of Nigeria: A Review." ISRN Veterinary Science 2011 (June 14, 2011): 1–10. http://dx.doi.org/10.5402/2011/838606.

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The paper examines heat stress and its adverse effects as a hindrance to profitable poultry production in the tropics, with emphasis on the Northern Guinea Savannah zone of Nigeria. It elucidates the general negative effects of heat stress on physiological parameters of domestic chickens, and the specific impact of the stress on reproduction in the tropics. The deleterious effects are expressed in poor poultry well-being and reproductive performance. It is concluded that measures aimed at alleviating heat stress in domestic chickens must be adopted in order to enhance reproductive and, consequ

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Morick, Danny, Boris R. Krasnov, Irina S. Khokhlova, et al. "Effects of Bartonella spp. on Flea Feeding and Reproductive Performance." Applied and Environmental Microbiology 79, no. 11 (2013): 3438–43. http://dx.doi.org/10.1128/aem.00442-13.

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ABSTRACTNumerous pathogens are transmitted from one host to another by hematophagous insect vectors. The interactions between a vector-borne organism and its vector vary in many ways, most of which are yet to be explored and identified. These interactions may play a role in the dynamics of the infection cycle. One way to evaluate these interactions is by studying the effects of the tested organism on the vector. In this study, we tested the effects of infection withBartonellaspecies on fitness-related variables of fleas by usingBartonellasp. strain OE 1-1,Xenopsylla ramesisfleas, andMeriones c

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Lenka, Krpalkova, Cabrera Victor E, Kvapilik Jindrich, and Burdych Jiri. "Associations of reproduction and health with the performance and profit of dairy cows." Agricultural Economics (Zemědělská ekonomika) 62, No. 8 (2016): 385–94. http://dx.doi.org/10.17221/176/2015-agricecon.

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The objective of the study was to evaluate the associations of the variable intensity in culling of dairy cows and culling due to the movement disorders, mammary gland diseases, long calving interval, low fertility and postpartum complications with production, reproduction and economic parameters on 60 commercial dairy herds. The data encompassed 34 632 cow records from the Czech Republic 12 regions and were collected during a 1-yr period (2012). The milk yield during the production period was analysed relative to the reproduction and economic parameters. The main reasons for culling cows were

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Balogh, Eszter, László Kern, István Anton, Orsolya Balogh, György Gábor, and József Rátky. "Andrological examination of Hungarian Large White and Landrace boars." Acta Agraria Debreceniensis, no. 75 (December 28, 2018): 5–10. http://dx.doi.org/10.34101/actaagrar/75/1638.

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The Hungarian Large White and Hungarian Landrace pig breeds have outstanding lifetime performance, production parameters and crossbreeding ability. Nevertheless, during the recent decades, these breeds could not compete with the West European hybrid pigs concerning on production results. In this study, we made a complex andrological evaluation of boars in different Hungarian nucleus breeding stocks. After taking blood and semen samples, performing gonadotropin-releasing hormone (GnRH) challenge, ultrasonic and thermographic examinations were done. Laboratory tests were accomplished in reproduc

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