International Journal of
Genetics and Molecular Biology

  • Abbreviation: Int. J. Genet. Mol. Biol.
  • Language: English
  • ISSN: 2006-9863
  • DOI: 10.5897/IJGMB
  • Start Year: 2009
  • Published Articles: 132

Full Length Research Paper

Associations between prolactin gene polymorphism and milk production in montebeliard cows

Nasrin Ghasemi1*, Mohammad Zadehrahmani2, Ghodratollah Rahimi3, Seyed Hassan Hafezian3
1Genetic Department, Safayeh, Bouali Street, Research and Clinical Centre for Infertility, Yazd Shahid Sadoughi Medical Sciences University, Yazd, Iran. 2Genetic Department, University of Mazandaran 3Animal Improvement and Genetics Department, Sari Agricultural Sciences and Natural Sources University,
Email: [email protected]

  •  Accepted: 08 June 2009
  •  Published: 30 June 2009


Prolactin (PRL) is one of the multi-purpose hormones of the pituitary gland in terms of biological actions especially milk production.  In this study associations were analyzed between polymorphisms of the prolactin gene (PRL-RsaI) and milk production traits of Montebeliard cows. PCR-RFLP method was used for identification of genotypes. Frequencies of genotypes were 0.81, 0.15 and 0.04 for A/A, A/B and B/B, respectively. The frequency of PRL A allele is 0.89. The results show AA cows yielded most milk in compared of other groups.

Key words: Prolactin gene, montebeliard cows, PCR-RFLP.