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Volume 45, issue 5
Arch. Anim. Breed., 45, 421–428, 2002
https://doi.org/10.5194/aab-45-421-2002
© Author(s) 2002. This work is distributed under
the Creative Commons Attribution 3.0 License.
Arch. Anim. Breed., 45, 421–428, 2002
https://doi.org/10.5194/aab-45-421-2002
© Author(s) 2002. This work is distributed under
the Creative Commons Attribution 3.0 License.

  10 Oct 2002

10 Oct 2002

Associations between Leu/Val polymorphism of growth hormone gene and milk production traits in Black-and-White cattle

A. Dybus A. Dybus
  • Agriculture University of Szczecin, Department of Genetics and Animal Breeding, Doktora Judyma 6, 71-460 Szczecin, Poland

Abstract. Associations between polymorphism of the bovine growth hormone (GH) gene (Leu/Val) and milk production traits of Black-and-White cattle with different proportional share of Holstein Friesian genes were analysed. A total of 1086 cows were included in the study. PCR-RFLP method was used for genotyping. The frequencies of genotypes and alleles were as follows: 0.653 for LL genotype, 0.324 for LV and 0.023 for VV, and 0.815 for GHL and 0.185 for GHV. Associations between Leu/Val polymorphism and milk production traits of cows were found only in first lactation. Cows with LL genotype had higher milk, fat and protein yield compared to LV individuals (P ≤ 0.01).

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