Characterization of High-Producing Cows by their Immunogenetic Status

DOI

10.2991/agrosmart-18.2018.49How to use a DOI?

Keywords

cow, milk yield, lactation, milk, fat, protein

Abstract

The selection of high-producing cows into the group of cows carrying bull calves is of great importance for successful breeding as for a single farm, as for the industry in the whole region. Present work analyses the productivity of the cattle herd in Sverdlovsk region. It was established that the percentage of cows with the yield of more than 7.0 tons of milk per lactation constantly increases. For instance, in 2015, the percentage of such cows was 41.4%, while by 2017 it increased up to 54.2%. Considering generally increased milk yield, the farms have cows with record breaking yields. The absolute champion of 2017 is cow Snegurka 5242 which yield amounted to 17,120 kg of milk per one lactation with the mass fraction of fat of 3.90%, mass fraction of protein of 3.25% and nutritional yield (fat + proteins) of 1223 kg. The analysis of the high-producing cow genotype has demonstrated that the animals with I2D'E'3G'O' allele are characterized by the highest productivity. In the group of selected 2919 cows with the productivity of more than 10.0 tons of milk, 77 species have the yield of more than 11515 kg of milk regarding the maximum lactation. The most highly productive animals can have G2I2Y2E'3Q' allele, 180 animals (6.2%) in the whole group. The determination of the alleles characterizing the immuno-genetic status of high-producing cows allows defining the potential productivi-ty of the offspring and, using this data as the basis, carrying out early estima-tion of animal productivity aimed at their selection into the group of cows car-rying bull calves.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - S.L. Gridina
AU  - V.F. Gridin
AU  - O.I. Leshonok
PY  - 2018/12
DA  - 2018/12
TI  - Characterization of High-Producing Cows by their Immunogenetic Status
BT  - International scientific and practical conference "AgroSMART - Smart solutions for agriculture" (AgroSMART 2018)
PB  - Atlantis Press
SP  - 253
EP  - 256
SN  - 2352-5401
UR  - https://doi.org/10.2991/agrosmart-18.2018.49
DO  - 10.2991/agrosmart-18.2018.49
ID  - Gridina2018/12
ER  -