Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/948656
Research center of Embrapa/Collection: Embrapa Gado de Corte - Artigo em periódico indexado (ALICE)
Date Issued: 2012
Type of Material: Artigo em periódico indexado (ALICE)
Authors: CARVALHO, T. D. de
SIQUEIRA, F.
TORRES JUNIOR, R. A. de A.
MEDEIROS, S. R. de
FEIJO, G. L. D.
SOUZA JUNIOR, M. D. de
BLECHA, I. M. Z.
SOARES, C. O.
Additional Information: Thiago Dutra de Carvalho, UFMS; FABIANE SIQUEIRA, CNPGC; ROBERTO AUGUSTO DE A TORRES JUNIOR, CNPGC; SERGIO RAPOSO DE MEDEIROS, CNPGC; GELSON LUIS DIAS FEIJO, CNPGC; Maury Dorta de Souza Junior, UFMS; Isabella Maiumi Zaidan Blecha, CNPGC; CLEBER OLIVEIRA SOARES, CNPGC.
Title: Association of polymorphisms in the leptin and thyroglobulin genes with meat quality and carcass traits in beef cattle.
Publisher: Revista Brasileira de Zootecnia, v.41, n.10, p.2162-2168, 2012.
Language: en
Keywords: Bovino de corte.
Description: The objective of the present study was to estimate the allelic and genotypic frequencies of the polymorphisms E2FB (AY138588.1: c.305C> T), located in the leptin gene (LEP), and TG5 (X05380.1:g.-422C>T), located in the thyroglobulin gene (TG), and evaluate the association of these polymorphisms in crossbred cattle of seven distinct genetic groups with the following traits: slaughter weight (SW), hot carcass weight (HCW), hot carcass yield (HCY), carcass fat thickness (CFT), ribeye area (REA), marbling (MARM) and shear force (SF). The animals were genotyped using the PCR-RFLP (Polymorphism Chain Reaction-Restriction Fragment Length Polymorphism) technique, using 201 products obtained from F1 Caracu × Nellore, Angus × Nellore and Valdostana × Nellore cows, mated to Canchim, Caracu and Red Angus bulls (only Caracu × Nellore cows were used with Red Angus bulls). The allelic and genotypic frequencies were compared using the Chi-squared test. Associations between the genotype of each polymorphism and the traits were analyzed using the General Linear Model (GLM) of statistical software SAS. The least squares means of genotypes of the polymorphisms were compared using Student?s t test. The E2FB polymorphism in the LEP gene was associated with CFT, showing the potential for use in national programs for genetic improvement of beef cattle, through the inclusion of SNP in genotyping commercial tests. The TG5 polymorphism in the TG gene was not associated with any of the evaluated traits and was considered ineffective for selection of beef cattle in Brazilian herds.
Thesagro: Gado de Corte
Melhoramento Genético Animal.
Data Created: 2013-02-07
Appears in Collections:Artigo em periódico indexado (CNPGC)

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