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Positional candidate genes for residual intake and gain in Nelore beef cattle

Thursday, August 21, 2014
Posters (The Westin Bayshore)
Priscila S. N. Oliveira , Federal University of São Carlos, São Carlos, Brazil
Aline S.M. Cesar , LZT/ESALQ/University of Sao Paulo, Piracicaba, Brazil
Michele Lopes Do Nascimento , Universidade de São Paulo/Esalq, Piracicaba, Brazil
Marcela M. Souza , Federal University of São Carlos, São Carlos, Brazil
Rymer R. Tullio , Embrapa Pecuária Sudeste, São Carlos, Brazil
Dante P Lanna , University of São Paulo, Piracicaba, Brazil
Gerson B Mourão , University of São Paulo, Piracicaba, Brazil
James M Reecy , Iowa State University, Ames, IA
Dorian J. Garrick , Iowa State University, Ames, IA
Maurício A. Mudadu , Embrapa Pecuária Sudeste, São Carlos, Brazil
Luiz L. Coutinho , Universidade de São Paulo/Esalq, Piracicaba, Brazil
Luciana C Almeida Regitano , Embrapa Southeast Livestock, Sao Carlos, Brazil
Abstract Text:

Feed efficiency is jointly determined by productivity and feed requirements, both of which are economically relevant traits in beef cattle production systems. The objective of this study was to identify genes/QTLs associated with residual intake and gain in Nelore cattle using Illumina BovineHD BeadChip genotypes. The Bayes B analysis was completed with Gensel software. Candidate genes within genomic windows were annotated by putative function. One genomic region, on BTA18, explained >0.5% of genetic variance for RIG. Three candidates genes are annotated in this region; PHKB, VPS35 and DNAJA2. This region was associated with other feed efficiency traits, feed conversion ratio and feed efficiency. The positional candidate genes reported were never reported before for Bos indicus. GWAS of complex traits for Nelore cattle breed are important since there has no research reporting regions and genes associated to feed efficiency traits in this breed.

Keywords:

Bos indicus

Feed efficiency

SNPs

See more of: Posters: Genetics of Trait Complexes - Feed Intake and Efficiency (Group 1)
See more of: Genetics of Trait Complexes: Feed intake and efficiency
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