employee from 01.01.2010 to 01.01.2025
All-Russian Research Institute of Genetics and Farm Animal Breeding (Laboratory of population genetics and animal breeding, Researcher)
employee from 01.01.2010 to 01.01.2025
Vserossiyskiy nauchno-issledovatel'skiy institut genetiki i razvedeniya sel'skohozyaystvennyh zhivotnyh – filial Federal'nogo gosudarstvennogo byudzhetnogo nauchnogo uchrezhdeniya «Federal'nyy issledovatel'skiy centr zhivotnovodstva — VIZh imeni akademika L.K. Ernsta»
St. Petersburg, Russian Federation
Vserossiyskiy nauchno-issledovatel'skiy institut genetiki i razvedeniya sel'skohozyaystvennyh zhivotnyh – filial Federal'nogo gosudarstvennogo byudzhetnogo nauchnogo uchrezhdeniya «Federal'nyy issledovatel'skiy centr zhivotnovodstva — VIZh imeni akademika L.K. Ernsta»
Pushkin, Russian Federation
VAK Russia 4.1.1
VAK Russia 4.1.2
VAK Russia 4.1.3
VAK Russia 4.1.4
VAK Russia 4.1.5
VAK Russia 4.2.1
VAK Russia 4.2.2
VAK Russia 4.2.3
VAK Russia 4.2.4
VAK Russia 4.3.3
VAK Russia 4.3.5
UDC 636.2.034
CSCSTI 68.39
Russian Classification of Professions by Education 35.06.01
Russian Library and Bibliographic Classification 460
Russian Trade and Bibliographic Classification 5622
BISAC SCI070030 Life Sciences / Zoology / Mammals
The objective of the study is to conduct a comparative analysis of udder conformation scores in genotyped Ayrshire dairy cows of different origins based on EBV assessments using the BLUP AM method. Objectives: to study the variability of the main linear traits used to assess cow body type, as well as their conformation deficiencies based on the breeding value of the genetic assessment depending on the origin of the fathers, and to analyze the population's genetic structure to identify clustering of daughters of foreign and domestic bulls. The object of the study was individual conformation score data and the genotypes of 669 first-calf heifers based on the results of genome-wide studies based on single-nucleotide polymorphisms in the Ayrshire cattle population with 29,883 SNPs. Among imported animals, animals from Finnish semen took the leading position according to assessments, with EBV for UD values of +0.57 ± 0.07, RUH of +0.32 ± 0.07, FUA of +0.31 ± 0.07, and RUW of +0.23 ± 0.12, which significantly exceeded or was at the same level as their peers. The offspring of North American bulls belonging to a Russian breeding enterprise (BE) had better EBV values for udder conformation, and the infusion of North American Ayrshire blood into Finnish bulls belonging to the BE RF had an improving effect on FUA, RUH, and UD. Analysis of individual bulls showed that the individual characteristics of selected sires, regardless of their origin, are more important for selection for improved udder quality. And the identified defects in the udder exterior are not closely related to EBV assessments for udder quality traits.
exterior, Ayrshire breed, sire, SNP, BLUP AM
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