A single nucleotide polymorphism in suppressor of cytokine signalling-2 is associated with growth and feed conversion efficiency in pigs.
Feed efficiency and growth are the most important traits in pig production, and very few genetic markers have been reported to be associated with feed efficiency. The suppressor of cytokine signalling-2 (encoded by SOCS2) is the main negative regulator of somatic growth, and the knockout of SOCS2 and naturally mutant mice have high-growth phenotypes. Porcine SOCS2 was selected as a primary positional candidate for feed efficiency, because it is located on chromosome 5q, in the vicinity of a Quantitative Trait Locus (QTL) region for food conversion ratio in pigs. Here, we report five single nucleotide polymorphisms identified by sequencing of the promoter region and exon 1. One PCR-RFLP assay was designed for genotyping the polymorphism c.1667A > G (GenBank Accession No AY312266). Association analyses were performed in an Australian mapping resource pedigree population (PRDC-US43) for food conversion ratio, backfat, IGF1 level and growth traits and showed significant effects on average daily gain on test (ADG2) (P < 0.01) and marginal association with food conversion ratio (FCR) (P < 0.08).
Faculty of Veterinary Science, University of Sydney, NSW 2006, Australia. Animal Genetics and Breeding Unit2, University of New England, Armidale, NSW 2351, Australia.QAF Meat Industries, Corowa, NSW 2646, Australia.
Y
Y
Chen
E
E
Piper
Y
Y
Zhang
B
B
Tier
H U
HU
Graser
B G
BG
Luxford
C
C
Moran
D000818:Animals; D001483:Base Sequence; D002874:Chromosome Mapping / Q000662:veterinary; D005091:Exons / Q000235:genetics; D005819:Genetic Markers / Q000235:genetics; D005838:Genotype; D008969:Molecular Sequence Data; D010375:Pedigree; D010641:Phenotype; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D011401:Promoter Regions, Genetic / Q000235:genetics; D040641:Quantitative Trait Loci / Q000235:genetics; D017422:Sequence Analysis, DNA / Q000662:veterinary; D050826:Suppressor of Cytokine Signaling Proteins / Q000235:genetics*; D013552:Swine / Q000235:genetics* / Q000254:growth & development / Q000502:physiology; D015430:Weight Gain
D005819:Genetic Markers; D050826:Suppressor of Cytokine Signaling Proteins
SOCS2; food conversion ratio; pig; single nucleotide polymorphism