Some aspects of placenta in cows on dairy farms in the southern Far East

Authors

  • N.F. Kluchnikova Federal State Budgetary Institution of Science Khabarovsk Federal Research Center of the Far Eastern Branch of the Russian Academy of Sciences Far Eastern Agricultural Research Institute
  • M.T. Kluchnikov Federal State Budgetary Institution of Science Khabarovsk Federal Research Center of the Far Eastern Branch of the Russian Academy of Sciences Far Eastern Agricultural Research Institute

DOI:

https://doi.org/10.7868/S3034519726010146

Keywords:

reproductive capacity, retention of afterbirth, prevention, sodium

Abstract

The results of studying the occurrence of afterbirth retention in cows on dairy farms in the south of the Far East are presented. As a result of the research, 1893 calvings were recorded, retention of the afterbirth was registered in 273 individuals (14.4%). Including in the summer-autumn period in 12.1% of cows, and in the winter-spring period - in 15.4%. The assessment of the reproductive ability of cows revealed the negative consequences of this pathology on all the studied indicators. If on average for the entire number of cows the period from calving to the first heat was 65.2 days, before fertilization - 112.2 days.  then for the group of cows with afterbirth retention - 70.6 and 119.4 days, respectively, and the number of inseminations for conception increased from 1.98 to 2.16 or by 9.1

Author Biographies

  • N.F. Kluchnikova, Federal State Budgetary Institution of Science Khabarovsk Federal Research Center of the Far Eastern Branch of the Russian Academy of Sciences Far Eastern Agricultural Research Institute

    Grand PhD in Agricultural Sciences

  • M.T. Kluchnikov, Federal State Budgetary Institution of Science Khabarovsk Federal Research Center of the Far Eastern Branch of the Russian Academy of Sciences Far Eastern Agricultural Research Institute

    PhD in Agricultural Sciences

References

1. Батраков А.Я., Племяшов К.В., Сердюк Г.Н. Современное состояние молочного животноводства России и пути повышения его эффективности // Ветеринария. 2023. № 6. С. 10-14.

2. Ключникова Н.Ф. Аспекты повышения оплодотворяемости коров. Хабаровск, 2006. 256 с.

3. Ключников М.Т., Ключникова Н.Ф. Селен в профилактике бесплодия коров. Хабаровск, 1990. 16 с.

4. Маддисон В. Задержание последа – предложений много, загадка остается // Молочное и мясное скотоводство. 2004. № 1. C. 13-15.

5. Медведев Г.Ф., Гавриченко Н.И., Ходыкин Д.С. Задержание последа у коров // Ученые записки УО ВГАВ. 2017. № 53. Вып. 2. С. 99-103.

6. Нежданов А.Г., Шахов А.Г. Послеродовые гнойно-воспалительные заболевания матки у коров // Ветеринарная патология. 2005. № 3 (14). 61 с.

7. Полянцев Н.И., Подберезный В.В. Ветеринарное акушерство и биотехника репродукции животных // Сер. «Ветеринария и животноводство». Ростов н/Д: Феникс, 2001. 480 с.

8. Руколь В.М. Моцион – залог продуктивного долголетия коров // Научно-практический журнал. 2014. №3 (7). С. 18-25.

9. Терентьева Н.Ю., Поляков С.В., Иванова С.Н. Способ профилактики задержания последа укоров // Ветеринария сельскохозяйственных животных. 2021. № 2. С. 32-38.

Published

2026-03-21

Issue

Section

ЗООТЕХНИЯ

How to Cite

Kluchnikova, N. ., & Kluchnikov, M. . (2026). Some aspects of placenta in cows on dairy farms in the southern Far East. Vestnik of the Russian Agricultural Science, 1, 79-82. https://doi.org/10.7868/S3034519726010146