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Polymorphism identification in goat DGAT1 and STAT5A genes and association with milk production traits

Author

Listed:
  • X.P. An

    (College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China)

  • J.X. Hou

    (College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China)

  • H.B. Zhao

    (College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China)

  • L. Bai

    (College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China)

  • J.Y. Peng

    (College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China)

  • C.M. Zhu

    (College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China)

  • Q.M. Yan

    (College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China)

  • Y.X. Song

    (College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China)

  • J.G. Wang

    (College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China)

  • B.Y. Cao

    (College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China)

Abstract

Polymorphisms of DGAT1 and STAT5A genes in Xinong Saanen and Guanzhong goat breeds were investigated. PCR-RFLP, SSCP, and DNA sequencing were used to identify three SNPs: DQ380250:g.407_408insC in the DGAT1 gene, AJ237937:g.6798C>T and g.6852C>T in the STAT5A gene. In DGAT1 g.407_408insC locus, the frequencies of C- allele were 0.79-0.85, and frequencies of C+ allele were 0.21-0.15. At STAT5A g.6852C>T locus, frequencies of C allele were 0.70-0.72, and frequencies of T allele were 0.30-0.28. Compared with goats with DGAT1 C-C-, those with C-C+ genotype had greater milk fat (P < 0.05). The goats with STAT5A CT had greater milk yield than those with CC genotype (P < 0.05). The results showed that does with C-C-CT and C-C+CT yielded more milk than those with C-C-CC(P < 0.05). In addition, does with C-C+CT had the highest milk fat in comparison with other combination genotypes (P < 0.05).

Suggested Citation

  • X.P. An & J.X. Hou & H.B. Zhao & L. Bai & J.Y. Peng & C.M. Zhu & Q.M. Yan & Y.X. Song & J.G. Wang & B.Y. Cao, 2013. "Polymorphism identification in goat DGAT1 and STAT5A genes and association with milk production traits," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 58(7), pages 321-327.
    • Handle: RePEc:caa:jnlcjs:v:58:y:2013:i:7:id:6862-cjas
    DOI: 10.17221/6862-CJAS
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