BIO Web Conf.
Volume 66, 2023International Scientific and Practical Conference “AGRARIAN SCIENCE - 2023” (AgriScience2023)
|Number of page(s)||6|
|Section||Breeding, Selection and Genetics of Farm Animals|
|Published online||08 September 2023|
Questions of admixture crossing in semi-fine-wool sheep breeding in Kyrgyzstan
Kyrgyz National Agrarian University named after K. I. Scriabin, Bishkek, Kyrgyzstan
* Corresponding author: firstname.lastname@example.org
The paper deals with the use of admixture crossing in semi-fine-wool sheep breeding in Kyrgyzstan and its results. The purpose of the research was to develop and scientifically substantiate the methods of using the North Caucasian meat and wool breed during admixture crossing for further improvement of the Tian Shan sheep breed. Generally accepted zootechnical methods were used (the classical scheme of introductory crossing), wool qualities were determined on the OFDA device – 2000. The half-blooded (1/2SKTSH) and quarter-blooded (1/4SKTSH) North Caucasian Tian Shan young animals have better wool qualities without reducing the live weight of the crossbreeds. At the same time, the crossbreeds obtained from the back crossing with wool of 58-56 quality in the specific weight of the herd reached 85.5%, and with the most desirable degree of fineness of 56 quality – 63.3%. According to wool density (M+), the proportion of mixed bred young ewes reached 33.3%, which was 25.2% more than that of half-bloods. It was revealed that the inheritance of wool density trait as a result of crossing these breeds had a positive effect on wool productivity. The crossbred wool cut from them had the best marketable appearance. All this makes it possible to switch to the breeding of quarter-blooded North Caucasian Tian Shan animals “in itself” in the future.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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