| Issue |
BIO Web Conf.
Volume 51, 2022
International Scientific and Practical Conference “From Modernization to Advanced Development: Ensuring Competitiveness and Scientific Leadership of the Agro-Industrial Complex” (IDSISA 2022)
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|---|---|---|
| Article Number | 04017 | |
| Number of page(s) | 6 | |
| Section | Innovative Technologies for the Production and Processing of Crop and Livestock Products: Problems and Prospects for Practical Implementation | |
| DOI | https://doi.org/10.1051/bioconf/20225104017 | |
| Published online | 02 August 2022 | |
Features of the growth of repair heifers depending on the inbreeding degree
1 Ural State Agrarian University, Karl Liebknecht 42, Yekaterinburg, 620075 Russian Federation
2 Ural Institute of GPS of the Ministry of Emergency Situations of Russia, Mira 22, Yekaterinburg, 620062 Russian Federation
3 Nosov Magnitogorsk State Technical University, 38 Lenin Ave, 38, Magnitogorsk 455000 Russian Federation
* Corresponding author: olgao205en@yandex.ru
The Ural type of the domestic black-and-white breed is distinguished by high productivity indicators, good suitability for use in the conditions of industrial milk technology. To obtain modern dairy cattle, related breeds were used in the herds, a significant number of animals obtained as a result of closely related breeding were revealed. the study of the influence of the degree of inbreeding on the growth and development of repair young is relevant and has practical significance. It was found that the live weight of heifers in all accounting periods practically did not differ, that is, it can be said that the method of obtaining heifers using unrelated or related selection did not affect the dynamics of live weight during their cultivation. The average daily gains in live weight differed slightly by growth periods and by groups. So they were higher in the periods from the first to the first fruitful insemination and from 10 to 12 months, lower gains were noted in the period from the moment of fruitful insemination to 18 months of age. The highest milk yield for lactation was obtained from the first heifers with a remote degree of inbreeding.
© The Authors, published by EDP Sciences, 2022
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