UDC 636.2: 591.465.31
DOI: 10.36871/vet.zoo.bio.202303005
Authors
Natalya A. Slesarenko,
Anna P. Belyakova,
Elena O. Shirokova,
Moscow State Academy of Veterinary Medicine and Biotechnology – MVA by K. I. Skryabin”, Moscow, Russia
Abstract
The article presents the results of echographic studies of the ovaries of black-and-white Holstein cows at various stages of the sexual cycle. To conduct the experiment, based on the preliminary diagnosis, we formed a control group of animals (n=20), which included clinically healthy mature cows at various stages of the sexual cycle: proestrus, estrus, metestrus, anestrus, as well as an experimental group that included pregnant (n=10) and a group of young cows (n=10) with chronic inflammatory processes of the internal genitalia. A comprehensive methodological approach was used, including clinical examination of animals, anatomical dissection, ultrasound examination using an Easi-Scan scanner:Go and statistical analysis of the received digital data. Based on the conducted studies, we have established the echographic parameters of the ovaries of cows of the black-and-white Holstein breed at various stages of the sexual cycle, the patterns of ultrasound imaging of the organ are presented, morphological transformations of the gonads in inflammatory processes and pregnancy are revealed. This made it possible to evaluate the effectiveness of ultrasound diagnostics to identify morpho-echographic parameters of the ovary, as well as to establish on this basis the stage of the sexual cycle in cows.
Keywords
cattle, reproductive organs, sex glands, ovary, morphology, ultrasound diagnostics, sonography, black-and-white holstein breed, yellow body, follicle.
