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Associations Of A Leptin Gene Polymorphism With Beef Carcass Traits, Chad D. Bierman, Donald M. Marshall, Emilie Campbell, Nels H. Granholm
Associations Of A Leptin Gene Polymorphism With Beef Carcass Traits, Chad D. Bierman, Donald M. Marshall, Emilie Campbell, Nels H. Granholm
South Dakota Beef Report, 2003
The objective was to evaluate associations of leptin genotype with fat and muscle traits in cattle. A single nucleotide polymorphism located in exon 2 of the leptin gene in cattle codes for an amino acid change from arginine (R) to cysteine (C). Genotypes for the polymorphism were determined on 492 crossbred calves by AciI digestion of amplified PCR product (C allele: 130bp; R allele: 73bp and 57bp). Data were analyzed by least-squares, accounting for effects of genotype, sex, year, location, breed-type, and calf sire. Genotype was not significantly associated with carcass weight or ribeye area in any of the analyses. …