| Issue |
BIO Web Conf.
Volume 17, 2020
International Scientific-Practical Conference “Agriculture and Food Security: Technology, Innovation, Markets, Human Resources” (FIES 2019)
|
|
|---|---|---|
| Article Number | 00073 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.1051/bioconf/20201700073 | |
| Published online | 28 February 2020 | |
Assessment of bulls by capa-casein in the conditions of the Udmurt Republic
1
Izhevsk State Agricultural Academy, 426069 Izhevsk, Russia
2
Mozhgaplem Limited Liability Company, 427793 Mozhga, Russia
* Corresponding author: g-berezkina@mail.ru
In the article the analysis of bulls-producers used in the republic, depending on polymorphism on k-casein is carried out and the influence of genetic resources on the level of milk productivity, quality of milk and its dampness is determined. It has been revealed that 56 % of bulls in the republic have AA-genotype, 40 % have AB and only 4 % have BB-genotype. The highest yield for 305 days of lactation in cows with BB- and AB-genotypes 6018 and 5985 kg, respectively. Protein content in BB-cow milk was 3.15 %, which is 0.14 % higher in comparison with AA-cows (P ≥ 0.95) and AA-cows – 0.06 % higher. More than a half of all milk examined in the group of cows with BB- and AB-genotype on k-casein (90 and 85 %, respectively) had on rennet and fermentation sample I and II class. In the Udmurt Republic β-asein contains only 26 %, which also affects the quality and yield of finished products, in particular, rennet cheeses.
© The Authors, published by EDP Sciences, 2020
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