Some aspects of the relationship between the morphology of the ovaries and the exterior of first-calf heifers of the Middle Amur Region-Reference-Cited by-同舟云学术

Some aspects of the relationship between the morphology of the ovaries and the exterior of first-calf heifers of the Middle Amur Region

Published:2024-05-20 Issue:1 Volume: Page:64-67
ISSN:2500-2082
Container-title:Вестник российской сельскохозяйственной науки
language:
Short-container-title:Vestnik of the Russian agricultural science

Author:

Kluchnikova N. F.¹,Kluchnikov M. T.¹,Klyuchnikova E. M.¹

Affiliation:

1. 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

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 (+++; ++++).

Publisher

The Russian Academy of Sciences

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