Back to Search Start Over

Polymorphisms in candidate genes and their association with carcass traits and meat quality in Nellore cattle

Polymorphisms in candidate genes and their association with carcass traits and meat quality in Nellore cattle

Authors :
Bárbara Oliveira Borges
Rogério Abdallah Curi
Fernando Baldi
Fabieli Loise Braga Feitosa
Willian Bruno Fernandes de Andrade
Lucia Galvão de Albuquerque
Henrique Nunes de Oliveira
Luis Artur Loyola Chardulo
Source :
Pesquisa Agropecuária Brasileira, Vol 49, Iss 5, Pp 364-371 (2014)
Publication Year :
2014
Publisher :
Embrapa Informação Tecnológica, 2014.

Abstract

The objective of this work was to estimate the allele polymorphism frequencies of genes in Nellore cattle and associate them with meat quality and carcass traits. Six hundred males were genotyped for the following polymorphisms: DGAT1 (VNTR with 18 nucleotides at the promoter region); ANK1, a new polymorphism, identified and mapped here at the gene regulatory region NW_001494427.3; TCAP (AY428575.1:g.346G>A); and MYOG (NW_001501985:g.511G>C). In the association study, phenotype data of hot carcass weight, ribeye area, backfat thickness, percentage of intramuscular fat, shear force, myofibrillar fragmentation index, meat color (L*, a*, b*), and cooking losses were used. Allele B from the ANK1 gene was associated with greater redness (a*). Alleles 5R, 6R, and 7R from the DGAT1 VNTR gene were associated with increased intramuscular fat, reduced cooking losses and increased ribeye area, respectively. The single nucleotide polymorphism (SNP) of the TCAP gene was not polymorphic, and MYOG alleles were not associated with any of the evaluated characteristics. These results indicate that ANK1 and DGAT1 genes can be used in the selection of Nellore cattle for carcass and meat quality.

Details

Language :
English, Spanish; Castilian, Portuguese
ISSN :
16783921 and 0100204X
Volume :
49
Issue :
5
Database :
Directory of Open Access Journals
Journal :
Pesquisa Agropecuária Brasileira
Publication Type :
Academic Journal
Accession number :
edsdoj.3c60695dcd894eb2b21b2a664bd5dc17
Document Type :
article
Full Text :
https://doi.org/10.1590/S0100-204X2014000500006