China Animal Husbandry and Veterinary Medicine ›› 2025, Vol. 52 ›› Issue (4): 1729-1738.doi: 10.16431/j.cnki.1671-7236.2025.04.025

• Genetics and Breeding • Previous Articles     Next Articles

Analysis of PPP3CA Gene Polymorphism and Its Association with Body Size Traits in Zhijin White Geese

ZHAO Zhonglong1, ZHANG Yong1, YANG Hong2, YANG Runqian1, AI Zhaobi1, YE Li2, SHU Chang2   

  1. 1. College of Animal Science, Guizhou University/Key Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Ministry of Education/Guizhou Provincial Key Laboratory of Animal Genetics, Breeding and Reproduction, Guiyang 550025, China;
    2. Bijie City Animal Husbandry Station, Bijie 551700, China
  • Received:2024-07-31 Published:2025-03-29

Abstract: 【Objective】 The aim of this study was to identify the single nucleotide polymorphism (SNPs) loci of protein phosphatase 3 catalytic subunit α (PPP3CA) of Zhijin White geese,and explore the effect of PPP3CA gene polymorphism on body size traits.【Method】 The PPP3CA gene SNPs of 144 Zhijin White geese were identified by PCR amplification and Sanger direct sequencing.The gene frequency,genotype frequency,number of effective allele (Ne) and polymorphism information content (PIC) were calculated using Excel 2010 software,and the Hardy-Weinberg equilibrium state was analyzed.The association between SNPs and body size traits of 144 Zhijin White geese were analyzed by One-Way analysis of variance in the general linear model (GLM) of SPSS 25.0 software.【Result】 9 SNPs were found in intron 2 and 4 of PPP3CA gene in Zhijin White geese,namely g.58398 A>G,g.58504 A>G,g.58541 A>G,g.68997 A>G,g.69001 C>T,g.69034 C>T,g.69052 T>C,g.69070 T>C,and g.69114 C>T,respectively.Except for g.69034 C>T,which was a low polymorphic site (PIC<0.25),the other SNPs were moderate polymorphic loci (0.25<PIC<0.5).The Chi-square test results showed that the SNPs g.58398A >G,g.69001 C>T,g.69070 T>C and g.69114 C>T were consistent with Hardy-Weinberg equilibrium (P>0.05).However,the SNPs g.58504 A>G,g.58541 A>G,g.68997 A>G,g.69034 C>T and g.69052 T>C deviated from Hardy-Weinberg equilibrium (P<0.05).The results of association analysis showed that in the g.58504 A>G and g.58541 A>G,the pelvic width of GG genotype individuals were extremely significant or significantly higher than that of AA genotype (P<0.01 or P<0.05).【Conclusion】 There were 9 SNPs in PPP3CA gene of Zhijin White geese,among which g.58504 A>G and g.58541 A>G were correlated with pelvic width to different degrees,indicating that these SNPs could be used as reference loci for molecular marker-assisted breeding of Zhijin White geese,laying a theoretical foundation for further study of PPP3CA gene in geese.

Key words: Zhijin White geese; PPP3CAgene; SNPs; body size traits; association analysis

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