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Candidate genes for growth traits in beef cattle crosses Bos taurus × Bos indicus
Author(s) -
Tambasco D. D.,
Paz C. C. P.,
TambascoStudart M.,
Pereira A. P.,
Alencar M. M.,
Freitas A. R.,
Coutinho L. L.,
Packer I. U.,
Regitano L. C. A.
Publication year - 2003
Publication title -
journal of animal breeding and genetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.689
H-Index - 51
eISSN - 1439-0388
pISSN - 0931-2668
DOI - 10.1046/j.1439-0388.2003.00371.x
Subject(s) - biology , zoology , weaning , genotype , restriction fragment length polymorphism , candidate gene , beef cattle , quantitative trait locus , bovine somatotropin , polymorphism (computer science) , genetics , gene , recombinant dna
Summary Candidate gene strategy has been proposed to direct the search for quantitative trait loci, and polymorphisms at these loci have been associated with several production traits in bovine. A total of 211 animals resulting from crosses between Nelore females with sires from either Aberdeen Angus, Canchim and Simmental breeds were analyzed for restriction fragment length polymorphisms (RFLPs) in the κ ‐casein, β ‐lactoglobulin (LGB) and growth hormone GH genes. Average daily gain from birth to weaning (GBW) and from weaning to yearling (GWY) were analyzed by a statistical model comprising RFLP genotypes and their interaction effects. Significant effects (p < 0.05) of growth hormone ( GH ) and of the interaction β ‐lactoglobulin × GH were verified for the GWY. Animals with LL genotypes for GH had higher GBW than LV animals but lower GWY (p < 0.05).