DOI: 10.26155/vet.zoo.bio.202006007
UDC 636.22 / 28.082
Authors
E. N. Vasilyeva
Candidate of Agricultural Sciences, Senior Researcher, Laboratory of Genetics
and Selection of Ayrshire Cattle, Russian Research Institute of Farm
Animal Genetics and Breeding – Branch of the L. K. Ernst
Federal Science Center for Animal Husbandry,
St. Petersburg, Russian Federation
S. V. Anistenok
Candidate of Agricultural Sciences, Laboratory of Genetics and selection
of Ayrshire Cattle, Russian Research Institute of Farm Animal
Genetics and Breeding – Branch of the L. K. Ernst
Federal Science Center for Animal Husbandry,
St. Petersburg, Russian Federation
Abstract
Import of Ayrshire animals into our country is described in the article. When importing cattle from abroad, it is important to know the ratio of blood levels of different related breeds in Ayrshire animals, so there are dependencies of blood share with the level of economically useful signs. The data on XNUMX cows of the first calving were studied. It was found that XNUMX% is accounted for by the Finnish ayrshire from all the breed components. The remaining XNUMX breeds divide the places in different proportions. Animals with higher blood count on FAY are eliminated with diseases of the reproductive organs, and with higher blood count on CAN – with diseases of the udder. A larger number of cows dropped for various reasons in the FAY range from XNUMX to XNUMX% and CAN less than XNUMX%. These are reproductive organs (XNUMX%), udder (XNUMX%), metabolic disorder (XNUMX%) and others (XNUMX%). With an increase in CAN over XNUMX%, the number of animals dropped out decreases. Blood pressure according to FAY (XNUMX***) and CAN (XNUMX *) reliably affects the reasons for disposal.
Keywords
Ayrshire breed, reasons for retirement, strength of influence, blood share, one-way analysis of variance (ANOVA), related breeds.
