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.: Home > Animal Science Papers and Reports > 2013 > Volume 31 Number 4 > Katarzyna PiĆ³rkowska

Association study of PIT1 and GHRH SNPs with economically important traits in pigs of three breeds reared in Poland

Katarzyna PiĆ³rkowska
Laboratory of Genomics, National Research Institute of Animal Production, Krakowska 1, 32-083 Balice, Poland
Abstract :
Using the GLM procedure an association was analysed between
PIT1
and
GHRH
SNP
S
and
economically important traits in pigs of three breeds reared in Poland. Significant effect of
GHRH/
Alu
I SNP was observed on several quality traits such as water-holding capacity and meat colour (A,
B and L*) in Polish Large White pigs (P<0.05), with the differences between alternative homozygotes
being 8.1%, and 5% (meat colour), and 16% and 3% (WHC), respectively. With respect to the
PIT1
gene polymorphism, it was found that pigs carrying
AA
genotype presented lower values of growth
traits such as feed:gain ratio, daily feed intake and number of days on test compared to
BB
animals
(P<0.05) as well as lower pH
24
in loin and ham. In turn, heterozygous pigs (
AB
) had the highest level
of fat and the lowest values of meat traits when compared to both homozygotes. It was concluded
that polymorphisms in
GHRH
and
PIT1
genes were not directly associated with quality and carcass
traits, and likely they are linked to genetic markers localized on chromosomes 17 and 13. Therefore,
further investigations should aim at thorough testing of
GHRH
and
PIT1 loci
.
Keywords :
gene / GHRH / pigs / PIT1/ polymorphism

Date Deposited : 02 Apr 2015 10:22

Last Modified : 02 Apr 2015 10:22

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

Volume 31, Number 4, - 2013

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