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.: Home > Animal Science Papers and Reports > 2011 > Volume 29 Number 1 > Jolanta Komisarek*, Arkadiusz Michalak, Anna Walendowska

The effects of polymorphisms in DGAT1, GH and GHR genes on reproduction and production traits in Jersey cows

Jolanta Komisarek*, Arkadiusz Michalak, Anna Walendowska
Department of Cattle Breeding and Milk Production, Poznaٌ University of Life Sciences, Wojska Polskiego 71 A, 60-625 Poznaٌ, Poland
Abstract :

The aim of the study was to examine the impact of four single nucleotide polymorphisms in DGAT1,
GH and GHR genes on reproduction, production and udder health in Jersey cattle. The study was
conducted on 209 cows from the Polish active dairy population and genotypes were identified using
the PCR-RFLP technique. The significant effects on certain of analysed traits were revealed of GHL127V
and GHR-F279Y polymorphisms. Replacement of the phenylalanine encoding T allele by the
tyrosine encoding A variant at GHR-F279Y locus led to decrease in milk, fat and protein yields. The
GH-L127V-CC genotype was found to be significantly associated with the shorter calving interval
and shorter interval from calving to conception than the other two GH genotypes. No relations were
found between DGAT1-K232A mutation and health or reproductive traits of cows.

Keywords :
cattle / DGAT1 / GH / GHR / gene polymorphism / milk production traits / reproduction traits

Date Deposited : 21 Jun 2011 16:06

Last Modified : 21 Jun 2011 16:06

Official URL: http://www.ighz.edu.pl/?p0=5&p1=34

Volume 29, Number 1, - 2011

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