Data/hora: 16/06/2024 19:22:14

Biblioteca(s): | Embrapa Gado de Corte; Embrapa Pecuária Sudeste.
Data corrente: | 23/11/2017
Data da última atualização: | 28/11/2017
Autoria: | SANTIAGO, G. G.; SIQUEIRA, F.; CARDOSO, F. F.; REGITANO, L. C. de A.; VENTURA, R.; SOLLERO, B. P.; Souza, M. D.; MOKRY, F. B.; FERREIRA, A. B. R.; TORRES JUNIOR, R. A. de A.
Afiliação: | Federal University of Mato Grosso do Sul; FABIANE SIQUEIRA, CNPGC; FERNANDO FLORES CARDOSO, CPPSUL; LUCIANA CORREIA DE ALMEIDA REGITANO, CPPSE; Department of Animal and Poultry Science/University of Guelph/Centre for Genetic Improvement of Livestock -CGIL; BRUNA PENA SOLLERO, CPPSUL; Brazilian Association of Canchim Cattle Breeders - ABCCAN; Brazilian Association of Canchim Cattle Breeders - ABCCAN; ANNA BEATRIZ ROBOTTON FERREIRA, CNPGC; ROBERTO AUGUSTO DE A TORRES JUNIOR, CNPGC.
Título: | Genomewide association study for production and meat quality traits in Canchim beef cattle.
Ano de publicação: | 2017
Fonte/Imprenta: | Journal Animal Science, v. 95, n. 8, p. 3381-3390, Aug. 2017.
Idioma: | Inglês
Conteúdo: | The commercial value of the bovine carcass is determined by a set of traits, such as weight, yield, back fat thickness, and marbling; therefore, the genetic improvement of growth, meat, and carcass quality traits is an important tool to add value to the supply chain. Genomewide association studies (GWAS) enable the identification of loci that control phenotypic expression of quantitative traits (QTL). Therefore, the objective of this work was to perform a GWAS to identify genomic regions and genes associated with growth, carcass traits, and meat quality in Canchim beef cattle. These traits were yearling weight (YW), rib eye area (REA), back fat thickness (BFT), and marbling (MARB). To increase sample size and marker density, genotype imputation was performed, and only markers imputed with greater than 95% accuracy were used. Genomewide association study was performed using a Bayesian approach, by the Bayes B statistical method, incorporating genotypes and phenotypes from 614 animals from both the Canchim breed and the MA genetic group (offspring of Charolais bulls and one-half Canchim + one-half Zebu cows). This investigation identified 1 and 4 genomic regions explaining 0.23 and 7.35% of the genetic variance for REA and YW, respectively. These regions harbor a total of 19 genes, 7 of which were classified for biological functions by functional analysis. Significant associations were not observed for BFT and MARB. The identification of QTL that had been previously described in the literature reinforces associations found in this study.
Palavras-Chave: | Bayesian inference; Carcaça bovina; Carcass; Growth; Melhoramento genético do crescimento.
Thesagro: | Gado canchim.
Thesaurus Nal: | Cattle; Genomics; Single nucleotide polymorphism.

Categoria do assunto:

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G Melhoramento Genético

Registro original: | Embrapa Gado de Corte (CNPGC)

Exemplares:

CNPGC - (16978-1) - UPC - AP - DD -  -  -  - DIS
CPPSE - (24272-1) - UPC - AP - DD - PROCI-2017.00180 - SAN - 2017.00328 - DIS