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Animal Breeding and Genetics
Asian-Australasian Journal of Animal Sciences 2007;20(5): 627-632.
DOI: https://doi.org/10.5713/ajas.2007.627    Published online March 5, 2007.
The Porcine FoxO1, FoxO3a and FoxO4 Genes: Cloning, Mapping, Expression and Association Analysis with Meat Production Traits
Jing Yu, Quan-Yong Zhou, Meng-Jin Zhu, Chang-Chun Li, Bang Liu, Bin Fan, Shu-Hong Zhao*
Correspondence:  Shu-Hong Zhao,
FoxO1, FoxO3a and FoxO4 belong to the FoxO gene family, which play important roles in the PI3K/PKB pathway. In this study, we cloned the porcine FoxO1, FoxO3a and FoxO4 sequences and assigned them to SSC11p11-15, SSC1p13 and SSC xq13 using somatic cell hybrid panel (SCHP) and radiation hybrid panel (IMpRH). RT-PCR results showed that these three genes are expressed in multiple tissues. Sequencing of PCR products from different breeds identified a synonymous T/C polymorphism in exon 2 of FoxO3a. This FoxO3a single nucleotide polymorphism (SNP) can be detected by AvaII restriction enzyme. The allele frequencies of this SNP were investigated in Dahuabai, Meishan, Tongcheng, Yushan, Large White, and Duroc pigs. Association of the genotypes with growth and carcass traits showed that different genotypes of FoxO3a were associated with carcass length and backfat thickness between 6th and 7th ribs (BTR) and drip loss (p<0.05).
Keywords: Pig; FoxO1; FoxO3a; FoxO4; Mapping; Association Analysis
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