Korean Journal of Veterinary Research 2002;42(1):65-71.
Detection of the Ryanodine Receptor Gene Mutation Associated with Porcine Stress Syndrome from Pig Hair Roots by PCR-RFLP
Eui-Kyung Hwang, Yeon-Soo Kim
Division of Applied Animal Science, College of Life Science and Natural Resources, Sangji University
PCR-RFLP 기법을 이용한 Porcine Stress Syndrome의 진단
황의경, 김연수
상지대학교 생명자원과학대학 응용동물과학부
Abstract
We have utilized the PCR-RFLP method to detect the ryanodine receptor(RYR1) gene mutation and to estimate the genotype frequencies of the RYR1 gene in commercial crossbred pig population. The exon region(659bp) including point mutation(C ${ ightarrow}$T; Arg ${ ightarrow}$Cys) in the porcine ryanodine receptor gene, which is a causal mutation for PSS, was amplified by PCR and digested with Cfo I restriction enzyme. The RYR1 gene was classified into three genotypes by agarose gel electrophoresis. The normal homozygous(NN) individuals showed two DNA fragments consisted of 493 and 166bp. The mutant homozygous(nn) individuals showed only one DNA fragment of 659bp. Also, all three fragments(659, 493 and 166bp) were showed in heterozygous(Nn) carrier animals. The proportions of normal, carrier and PSS pigs within crossbred population of pigs were 81%, 15% and 4%, respectively. According to the results of analysis of variance for the association of genotypes of RYR1 of pigs at 30kg, day age at 90kg and average daily gains, the RYR1 nn genotype was very higher than RYR1 NN genotype for day age at 30kg with 5% level of significant difference, but no significant difference for association of any other genotypes with day age at 90kg and average daily gain in crossbred pigs. Therefore, DNA diagnosis by using PCR-RFLP analysis for the PSS gene was useful for large-scale screening of commercial pigs in the swine industry.
Key Words: PSS, PSE, RYR1, PCR-RFLP, Pigs
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