Open AccessAssessment of cows of Yenisei intra-breed type of red-mottled breed on a complex of signs
Author(s) -
Е. А. Алексеева,
I.Yu. Eremina
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/421/5/052015
Subject(s) - breed , herd , lactation , productivity , inbreeding , zoology , biology , selection (genetic algorithm) , livestock , production (economics) , milk production , microbiology and biotechnology , veterinary medicine , demography , ecology , genetics , medicine , pregnancy , population , computer science , artificial intelligence , sociology , economics , macroeconomics
The article is devoted to a comprehensive study of cows of the Yenisei inbreeding type of red-mottled breed. The paper studies the level of milk productivity in groups with different values of the production typicality coefficient and the relationship between the genotype and production typicality coefficient. It was established that the coefficient of production typicality can be used to predict productivity, optimize selection and create a model group of cows. The data obtained allowed us to determine the basic requirements for cows of the desired production types: average milk yield of 6487 ± 2020 kg of milk per 305 days of lactation in first-calf heifers and 7891 ± 419 kg in cows of the third lactation and older; live weight - for first-calf heifers 543-574 kg, adults - 616-684 kg. The formation of the herd should be carried out by animals of the desired production types, which will contribute to the creation of highly productive livestock and increase the efficiency of selection and breeding work to improve breeding and productive qualities. When creating a group of animals of the desired types, including for genomic selection, it is possible not to take into account the origin of the animals.