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Information × Registration Number 0226U001950, (0124U001506) , R & D reports Title Create a system for predicting the reproductive capacity of cows and heifers based on a complex of anatomical and physiological signs popup.stage_title Створити систему прогнозування відтворювальної здатності корів і телиць за комплексом анатомо-фізіологічних ознак Head Kovtun Svitlana Ivanivna, д.с.-г.н. Registration Date 04-02-2026 Organization Institute of Animal Breeding and Genetics nd. a. M.V.Zubets of National Academy of Agrarian Science of Ukraine popup.description1 Effective application of modern methods to improve the reproduction of breeding livestock of domestic breeds popup.description2 The results of previous studies of artificial insemination of cows depending on the time after calving were analyzed (n=546 heads, DP DH "Khristinivske", DP DH "Nyva"). The highest pregnancy rate was in cows that were inseminated from 61 to 80 days (63.4%, n=123). The content of erythrocytes and leukocytes in the blood of healthy and endometritis-stricken cows (n=108) was studied to assess the condition of the uterus. Lochia was biochemically examined for the presence of mucopolysaccharides in cows (n=37). Their absence indicates a pathological condition of the uterus. The relationship between the incidence of latent mastitis with the disease of cows with endometritis after calving and the duration of the service period as an indicator of the reproductive ability of cows (n=51) was studied. A comprehensive study was conducted on the relationship between biochemical blood parameters and the duration of the service period in the blood serum of cows of different physiological groups (n=22). A decrease in all hematological and biochemical parameters studied by us was established in newly calved cows (some of which are statistically significant) compared to the group of deep-bodied cows. In addition, the AST/ALT ratio was found to be increased in animals with a higher service period relative to this indicator in cows with a short one, which can be used as an additional criterion for diagnosing their reproductive potential. The use of the results obtained will allow controlling and maintaining the required level of biochemical serum parameters of cows during the service period. A mandatory gynecological examination of cows has been introduced, starting from 40–45 days after calving and, if necessary, correction of ovarian and uterine function to achieve a calf yield rate of 80–90%. With the additional use of 22 cows bred from the herd, Holstein and Ukrainian red-and-white dairy breeds for embryo production, an average of 2.27 heifers were obtained from them. Product Description popup.authors Oksana V. Shcherbak Petro A. Trotskyi Volodymyr F. Stakhovskyi Svitlana I. Kovtun Olena V. Boiko Tetiana V. Kaznadzei Volodymyr V. Chernenko Dmytro V. Kharchenko popup.nrat_date 2026-02-04 Close