›› 2020, Vol. 32 ›› Issue (9): 1574-1580.DOI: 10.3969/j.issn.1004-1524.2020.09.06

• Animal Science • Previous Articles     Next Articles

Effect of variation of PRKCB gene intron 14 in Sansui ducks on eggshell quality

LIAO Chaomei, YOU Minfang, TAN Guanghui, LI Jiezhang, ZHANG Yiyu*, QIN Yuanyu, LIU Ruoyu   

  1. Key Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Ministry of Education, College of Animal Science, Guizhou University, Guiyang 550025, China
  • Received:2020-01-08 Online:2020-09-25 Published:2020-10-10

Abstract: To explore the genetic effect of PRKCB gene on eggshell quality of Sansui duck, direct sequencing of PCR products, MegaAlign program of DNAStar software and Chromas software were used to screen and identify the genetic locus variation of (Anas platyrhyncha domestica) PRKCB gene. The correlation between SNP loci and eggshell traits were analysed by SPSS 18.0 software. The results indicated that three moderately polymorphic novel SNPs of g.1158465 C>T, g.1158519 G>A and g.1158524 G>A were detected in intron 14 of PRKCB gene in Sansui duck. Three genotypes were produced in each SNP. The genotype distribution of g.1158519 G>A and g.1158524 G>A were in accordance with Hardy-Weinberg equilibrium, while that of g.1158465 C>T was significantly (P<0.05) deviated from Hardy-Weinberg equilibrium. There was a strong linkage disequilibrium between g.1158519 G>A and g.1158465 C>T loci. The combination of three SNPs composed of 5 haplotypes and 8 diplotypes. The frequency of haplotype H5 (TGG) and diplotype H2H5 was 0.492 and 0.200, respectively. Association analysis showed that the eggshell thickness of individuals with AG genotype at g.1158519 G>A locus was significantly (P<0.05) higher than that of individuals with GG genotype, and the eggshell thickness of diplotype H1H3 individuals was significantly (P<0.05) higher than that of H3H5 individuals. The results suggested that the genetic variation of the intron 14 in PRKCB gene can affect duck eggshell quality, and g.1158519 G>A locus may be used as a genetic marker to improve duck eggshell quality.

Key words: PRKCB gene, Sansui ducks, SNP identification, eggshell quality, association analysis

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