CORRECTION OF REPRODUCTIVE ABILITY OF EWE IN COMPARATIVE ASPECT
DOI:
https://doi.org/10.37000/abbsl.2023.109.03Keywords:
sheep, correction, estrus, еstral cycle, infertility, hormonal stimulation.Abstract
Violation of the conditions of keeping ewes leads to a decrease in the productivity of animals and increases the economic losses of the industry. The article covers issues related to the correction of sheep reproduction in modern conditions of livestock farming in Ukraine. Emphasis is placed on the current problems of sheep breeding in general. The stimulating role of hormonal and vitamin preparations is clarified in a comparative aspect, since the issues of correction of estrus of ewes outside of natural seasonality are of wide applied interest, because they will be an additional basis for obtaining offspring all year round. Data on the correction of estrus of ewes of the experimental farm with hormonal and vitamin preparations were analyzed, and reasonable conclusions were drawn regarding the obtained results.
References
Majeed, H.A., Alaa, Н.K., & Tahreer M.T. (2022). The Reproductive Traits of Sheep and Their Influencing Factors. Reviews in Agricultural Sciencе, 10, 82–89. doi.org/10.7831/ras.10.0_82.
Regassa, T. & Ashebir, G. (2016). Major factors influencing the reproductive performance of dairy farms in Mekelle City, Tigray, Ethiopia. Journal of Dairy, Veterinary and Animal Research, 3: 145–149. DOI:10.15406/jdvar.2016.03.00088.
Al-Thuwaini, T.M. (2021). The relationship of hematological parameters with adaptation and reproduction in sheep; A review study. Iraqi Journal of Veterinary Sciences, 35 (3): 575–580. DOI: 10.33899/IJVS.2020.127253.1490
Farrag, B. (2019). Productive characteristics and reproductive responses to estrus synchronization and flushing in Abou-Delik ewes grazing in Arid Rangelands in Halaieb-Shalateen-Abouramad Triangle of Egypt. World’s Veterinary Journal, 9 (3): 201–210. doi.org/10.36380/scil.2019.wvj26.
Yavarifard, R., Hossein-Zadeh, N.G. & Shadparvar, A.A. (2015) Estimation of genetic parameters for reproductive traits in Mehraban sheep. Czech J. Anim. Sci., 60 (6): 281–288. doi: 10.17221/8242-CJAS.
Kитаєва, А.П., Слюсаренко, І.С., Слюсаренко, В.С. (2020) Біохімічні показники крові помісних ягнят першого покоління різного походження. Theory, Science and Practice, Abstracts of III International Scientific and Practical Conference Tokyo, Japan, October 05-08, ISBN - 978-1-64945-868-1, DOI - 10.46299/ISG. II. III. С.13 – 17.
