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.: Home > Animal Science Papers and Reports > 2004 > Volume 22 Number 2 > Agnieszka Korwin-Kossakowska, Gra؟yna Sender, Jolanta Kury³

Associations between the microsatellite dna sequence in the IGF1 gene, polymorphism in the ESR gene and selected reproduction traits in F1 (Zlotnicka Spotted × Polish Large White) sows

Agnieszka Korwin-Kossakowska, Gra؟yna Sender, Jolanta Kury³
Polish Academy of Sciences Institute of Genetics and Animal Breeding, Jastrzêbiec, 05-552 Wَlka Kosowska, Poland
Abstract :

In 53 F1 sows (Zlotnicka Spotted boars پ~ Polish Large White sows) the insulin-like growth factor
1 (IGF1) and estrogen receptor (ESR) genes were assessed as candidate genes for total number of
piglets born (TNB), number of piglets born alive (NBA), litter weight at birth (LWB), litter weight
at weaning (LWW), number of piglets weaned (NPW), average piglet weight at weaning (AWW)
and gestation length (GL). The IGF1 locus genotype (microsatellite sequence) was found to affect
(P.0.01) the TNB, NBA and GL when based on analysis of sows with all litters born. No association
between reproductive traits and ESR genotype was found in any restrictive site. However,
interesting appeared the results of the analysis including an interaction between ESR genotypes
in three polymorphic sites where almost all traits investigated appeared associated (P.0.05) with
ESR genotype. However, due to the limited number of animals, conclusions on the relationship
between gene polymor-phisms and reproduction traits must be considered as preliminary, and
thus treated with care.

Keywords :
estrogen receptor / insulin-like growth factor 1 / reproduction / sows

Date Deposited : 11 Aug 2011 10:25

Last Modified : 11 Aug 2011 10:25

Official URL: http://www.ighz.edu.pl/

Volume 22, Number 2, - 2004

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