Polymorphism of the ESRα, PRLR, LHβ and RYRI Genes in the Four Pig Populations

Abstract

Zhang, D. and Liu, D. 2010. Polymorphism of the ESRα, PRLR, LHβ and RYRI genes in the four pig populations. J. Appl. Anim. Res., 38: 73–76.

Polymorphism in Estrogen Receptor α (ESRα), Prolactin Receptor (PRLR), Luteinizing Hormone β (LHβ) and the Ryanodine Receptor 1 (RYRI) genes, which play important roles in litter size of pigs, were analysed in four pig populations (Min, Landrace, York-shine, Duroc) using PCR-SSCP. There was one SNP in ESRα (Arg/His₄₈₈), two SNPs in PRLR (one silent mutation and Val/Ala₅₅₅) and two silent mutations each in LHβ and RYRI. PRLR was highly polymorphic locus (0.59≥PIC≥0.46), LHβ and RYRI were moderately polymorphic loci (0.36≥PIC≥0.15) and ESRβ was very low polymorphic locus (0.07≥PIC≥0.00).

Keywords:

• Pig
• PCR-SSCP
• ESRα
• PRLR
• LHβ
• RYRI