POLYMORPHISM OF PROLACTIN RECEPTOR (PRLR) GENE IN DANUBE WHITE AND LANDRACE SWINE POPULATIONS

Zh. Sabev, S. Metodiev

Abstract: The frequency of gene and genotype at PRLR locus were studied in populations of Danube White and Landrace breeds of swine. Detection of PRLR genotypes (143 sows, 54 gilts and 19 boars) were performed by the PCR-RFLP method. The PRLR locus showed polymorphism in tested pigs. There was difference in allele frequency at PRLR locus between two breeds, different groups of breeding animals and different genealogical groups of sows. The A allele of PRLR locus was with higher frequency in Landrace (0.720) compared to that in Danube White (0.490). There were not sufficient differences in PRLR allele and genotype frequencies between the different groups of breeding animals in the breeds, except gilts and sows in Danube White. It was estimated higher variation in alleles and genotypes frequency between different genealogical groups of sows – allele frequency of allele A varied from 0.330 to 0.830 in Landrace and from 0.250 to 0.880 in Danube White. The results could be good background to evaluate the relationships between PRLR locus genotypes and reproduction and production traits in studied swine populations.

Keywords: PRLR allele frequencies; PRLR genotype frequencies; PRLR locus

Date published: 2019-01-28