SOME ASPECTS OF THE RELATIONSHIP BETWEEN THE MORPHOLOGY OF THE OVARIES AND THE EXTERIOR OF FIRST-CALF HEIFERS OF THE MIDDLE AMUR REGION

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
  • E. M. Klyuchnikova 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/10.31857/S2500208224010144

Keywords:

cattle, first-calving heifers, ovaries, exterior, tie

Abstract

The tie between the ovarian morphology and the exterior of 113 local black-and-white first-Calving heifers and the cross-breeds of different blood relationship with the Holstein bulls has been studied for the first time. The size of this tie varied from        r= 0.01 to r= 0.22. And by this the tie of right-side ovary was stronger (r= from 0.06 to 0.22), of left-side – (r= from 0.01 to 0.09). The gynaecologist inspection of sexual organs of 96 cows, being selected visually, for the insemination by signs of heat and sexual behavior exposed the presence of the follicle of before-ovulation ripeness in the ovaries of 42.7 % of animals (+++; ++++).  

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Published

2024-04-08

Issue

No. 1 (2024): January-February

Section

ЗООТЕХНИЯ

How to Cite

Kluchnikova, N. F., Kluchnikov, M. T., & Klyuchnikova, E. M. (2024). SOME ASPECTS OF THE RELATIONSHIP BETWEEN THE MORPHOLOGY OF THE OVARIES AND THE EXTERIOR OF FIRST-CALF HEIFERS OF THE MIDDLE AMUR REGION. Vestnik of the Russian Agricultural Science, 1, 64-67. https://doi.org/10.31857/S2500208224010144