Polymorphisms of the prolactin gene and their association with egg production traits in two Chinese domestic ducks. Issue 2 (4th March 2019)

• Record Type: Journal Article
• Authors: Bai, D.-P.; Hu, Y.-Q.; Li, Y.-B.; Huang, Z.-B.; Li, A.
• Is Part Of: British poultry science. Volume 60:Issue 2(2019)
• Page Start: 125
• Page End: 129
• Publication Date: 2019-03-04
• Subjects: Duck -- egg production traits -- PCR-SSCP -- polymorphisms -- Prolactin; Poultry -- Periodicals; Poultry industry -- Periodicals; 636.500941
• DOI: 10.1080/00071668.2019.1567909
• Languages: English
• ISSNs: 0007-1668

Abstract

ABSTRACT: 1. Prolactin (PRL) as a polypeptide hormone which plays a crucial role in egg production traits. 2. Polymorphisms of the PRL gene were analysed with DNA sequencing and polymerase chain reaction-single-strand conformation polymorphism methods in two Chinese domestic laying duck breeds (Jinding, n = 400, Youxian, n = 400, respectively). 3. The results showed that one polymorphism was detected (A-412G) in intron 1 of the PRL gene, with three genotypes: AA, AG and GG. Association analysis showed that the ducks with the GG genotype had significantly greater egg production and egg weight than those with AG and AA genotype ( p < 0.05). Hence, the 412A > G polymorphism of the PRL gene in intron 1 is a potentially valuable genetic marker for laying duck breeding programmes.