New Aspects in Technology of Production of Raw Milk

DOI

10.2991/agrosmart-18.2018.140How to use a DOI?

Keywords

dairy cattle, cluster, appraisal, performance traits, evaluation, Kappa-casein

Abstract

The authors analyse modern tendencies of development in the branch of dairy cattle breeding in the conditions of the cluster. Monitoring of effectiveness of using dairy cattle was conducted in order to form an optimal structure in the region. The productive qualities of milk of red-mottled, Simmental, Holstein, Montbeliard, Jersey, brown Swiss and black-and-white breeds were studied. The results indicate inter-group differences. According to the level of milk productivity, the animals of Holstein black-and-white breed rank first. Studies have shown that cows of Jersey breed have more population with the lowest live weight. The intensity of milk fat and protein production in comparison with Holstein animals is higher by 26.1% and 4.2%, respectively. The polymorphism of the Kappa-casein gene in bulls used in the Voronezh region taking into account linear affiliation was studied. Assessment of pedigree resources showed that 44,9% of the population have the homozygous AA genotype, 41% of heterozygous genotype AB and only 14% of the homozygous genotype BB. On average, the frequency of allele A for bulls of all breeds in the population reached 0.76; the frequency of allele B-0.63. Among the bulls of Jersey, Montbeliard, Red-motley, Simmental, Holstein black-and-white breeds there are carriers of homozygous genotype of BB. The greatest number of desirable BB genotypes was revealed among bulls of Jersey and Montbeliard breeds. The researchers found that the milk obtained from the cows of the Montbeliard breed, which are the daughters of a bull containing B-allele Kappa-casein, has the best technological properties. The protein content in the milk of these cows exceeded the protein content of other genotypes by 0.08-0.12%, fat content – by 0.1-0.12%. Daughters born to a bull with a homozygous AA genotype have a higher level of milk production. The obtained data suggest that the genotype of a bull by casein Kappa can serve as an additional criterion for the selection of animals.

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/).

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TY  - CONF
AU  - Galina Ovsyannikova
AU  - Elena Uhina
AU  - Marina Sysoeva
PY  - 2018/12
DA  - 2018/12
TI  - New Aspects in Technology of Production of Raw Milk
BT  - International scientific and practical conference "AgroSMART - Smart solutions for agriculture" (AgroSMART 2018)
PB  - Atlantis Press
SP  - 751
EP  - 754
SN  - 2352-5401
UR  - https://doi.org/10.2991/agrosmart-18.2018.140
DO  - 10.2991/agrosmart-18.2018.140
ID  - Ovsyannikova2018/12
ER  -