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The Effects of Stress Related Genes on Carcass Traits and Meat Quality in Pigs
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The Effects of Stress Related Genes on Carcass Traits and Meat Quality in Pigs
Jin, H.J.; Park, B.Y.; Park, J.C.; Hwang, I.H.; Lee, S.S.; Yeon, S.H.; Kim, C.D.; Cho, C.Y.; Kim, Y.K.; Min, K.S.; Feng, S.T.; Li, Z.D.; Park, C.K.; Kim, C.I.;
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The current study was conducted to investigate the relationship between stress related gene and meat quality in pigs. A total number of 212 three-way cross bred (Landrace-) and 38 Duroc were sampled from the Korean pig industry to determine genotype frequency of porcine stress syndrome (PSS) and heat shock protein 70 kDa (HSP70) genes and their relationship with carcass traits and longissimus meat quality. Screen of HSP70 was performed by the single strand conformation polymorphism (SSCP) technique. Based on the analysis of restriction fragment length polymorphism (RFLP) in ryanodine receptor 1 (RYR1) gene, genetic disorder of PSS was related to a mutation at (C to T) of exon 17. There was no significant difference in ultimate meat pH and backfat thickness between HSP70 K1-AA type and -BB type in pure Duroc breed. In Landrace- (L-) cross bred pig, our results indicated that HSP70 derivate type in Duroc had a limited effect on backfat thickness, but L- type had a noticeable linkage with HSP70 K1-AA and K3-AB. This tendency was also observed in hot carcass weight where HSP70 K1-AA and K3-AB resulted in heavier weight with 86.3 kg compared to HSP70 K1-AB and K3-BB of 74.3 kg. Results imply that stress related HSP70 genotype has a potential association with backfat thickness and carcass weight.
Pig;PSS;HSP70 Gene;PCR-SSCP and Meat Quality;
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