Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/662457
Unidade da Embrapa/Coleção:: Área de Informação da Sede - Artigo em periódico indexado (ALICE)
Data do documento: 26-Mar-2010
Tipo do Material: Artigo em periódico indexado (ALICE)
Autoria: CURI, R. A.
FORTES, M. R. S.
CHARDULO, L. A. L.
SILVEIRA, A. C.
DE BENI ARRIGONE, M.
MARTINS, C. L.
ASSUMPÇÃO, M. E. O. d' A.
OLIVEIRA, H. N. de
Título: Genetic polymorphisms related to meat traits in purebred and crossbred Nelore cattle.
Edição: 2009
Fonte/Imprenta: Pesquisa Agropecuária Brasileira. Brasília, v.44, n.12, p. 1660-1666, dez. 2009
Idioma: en
Palavras-chave: Calpain gene
Calpastatin gene
Single nucleotide polymorphisms
Conteúdo: Abstract - The objective of this work was to estimate the allelic and genotypic frequencies of CAST/XmnI, a calpastatin gene polymorphism, and CAPN530, a calpain 1 large subunit gene polymorphism, in different beef genetic groups (Nelore and Nelore x Bos taurus), and to investigate associations between these polymorphisms and carcass and meat traits. Three hundred animals ? comprising 114 Nelore, 67 Angus x Nelore, 44 Rubia Gallega x Nelore, 41 Canchim, 19 Brangus three-way cross and 15 Braunvieh three-way cross ? were genotyped by PCR-RFLP and phenotyped for rib-eye area (REA), back-fat thickness (BT), intramuscular fat (IF), shear force (SF) and myofibrillar fragmentation index (MFI). The occurrence of the two alleles of the CAST/XmnI and CAPN530 single nucleotide polymorphisms (SNPs) in a B. indicus breed, which permitted association studies in purebred and crossbred Nelore cattle, was first shown in the present work. No relationship was found between the CAST or CAPN1 SNPs and growth-related traits (REA) or fat deposition (BT and IF), since calpastatin and ?-calpain are not physiologically involved with these traits. Moreover, the association results between genotypes and aged meat tenderness (assessed by SF and MFI) showed that these markers are useless in assisted selection for purebred Nelore and their crosses with B. taurus.
NAL Thesaurus: Bos indicus
Meat tenderness
Ano de Publicação: 2009
Aparece nas coleções:Artigo em periódico indexado (AI-SEDE) / Embrapa Informação Tecnológica (SCT)

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