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Volume 48, issue 2
Arch. Anim. Breed., 48, 149–156, 2005
https://doi.org/10.5194/aab-48-149-2005
© Author(s) 2005. This work is distributed under
the Creative Commons Attribution 3.0 License.
Arch. Anim. Breed., 48, 149–156, 2005
https://doi.org/10.5194/aab-48-149-2005
© Author(s) 2005. This work is distributed under
the Creative Commons Attribution 3.0 License.

  10 Oct 2005

10 Oct 2005

Association of genetic variants of bovine prolactin with milk production traits of Black-and-White and Jersey cattle

A. Dybus1, W. Grzesiak1, H. Kamieniecki1, I. Szatkowska1, Z. Sobek2, P. Błaszczyk1, E. Czerniawska-Piątkowska1, S. Zych1, and M. Muszyńska1 A. Dybus et al.
  • 1Agriculture University of Szczecin, Department of Ruminants Science, Poland
  • 2Agriculture University of Poznań, Department of Genetics and Animal Breeding, Poland

Abstract. Associations between polymorphism localised in the third exon of the prolactin gene (PRL-RsaI) and milk xproduction traits of Black-and-White and Jersey cattle were analysed. A total of 427 cows were included in the study. PCR-RFLP method was used. The frequencies of genotypes and alleles were as follows: 0.7107 – AA, 0.2851 – AB, 0.0042 – BB; 0.8533 – PRLA and 0.1467 – PRLB for Black-and-White cattle and 0.0919 – AA, 0.4324 – AB, 0.4757 – BB; 0.3081 – PRLA and 0.6919 – PRLB for Jersey cattle. Statistically significant differences between the breeds were observed in the frequencies of genotypes and alleles. Associations between PRL-RsaI polymorphism and milk production traits of Jersey cows and lack of associations with these traits in Black-and-White cows were observed.

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