| Issue |
BIO Web Conf.
Volume 27, 2020
International Scientific-Practical Conference “Agriculture and Food Security: Technology, Innovation, Markets, Human Resources” (FIES 2020)
|
|
|---|---|---|
| Article Number | 00061 | |
| Number of page(s) | 4 | |
| DOI | https://doi.org/10.1051/bioconf/20202700061 | |
| Published online | 25 November 2020 | |
Genetic parameters of milk productivity for three lactations of Holstein cattle with different genotypes of LEP gene
1
N.E. Bauman Kazan State Academy of Veterinary Medicine, Kazan 420029, Russia
2
Tatar Scientific Research Institute of Agriculture – Subdivision of the Federal State Budgetary Institution of Science “Kazan Scientific Center of Russia Academy of Sciences, Kazan 420059, Russia
* Corresponding author: ahmetov-tahir@mail.ru
The research presents the findings of DNA testing of allelic polymorphism by the AC-PCR method of the LEP gene. The research was conducted among 172 Holstein cows at Integrated Agricultural Production Centre “Stud farm named after Lenin” in Atninsky district of the Republic of Tatarstan in 2017–2018. All genotypes of the LEP gene were identified through the research. Associations of the leptin gene polymorphism with dynamics of milk production during three lactations of Holstein cows were established. The best indicators for all three lactations were found in a group of animals with the TT genotype of the LEP gene. These individuals are characterized by increased milk yield, a high yield index, and tend to increase the average daily milk yield during three lactations. These individuals are characterized by increased milk yield, a high milk yield index, and tend to increase the average daily milk yield during three lactations.
© The Authors, published by EDP Sciences, 2020
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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