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Subspecies and diet affect the expression of genes involved in lipid metabolism and chemical composition of muscle in beef cattle.
Teixeira, Priscilla D; Oliveira, Dalton M; Chizzotti, Mario L; Chalfun-Junior, Antonio; Coelho, Tamara C; Gionbelli, MateusP; Paiva, Luciano V; Carvalho, José Roberto R; Ladeira, Marcio M.
Afiliação
  • Teixeira PD; Department of Animal Science, Federal University of Lavras, Lavras, Minas Gerais 37.200-000, Brazil.
  • Oliveira DM; Department of Animal Science, State University of Mato Grasso do Sul, Aquidauana, Mato Grosso do Sul 79.200-000, Brazil.
  • Chizzotti ML; Department of Animal Science, Federal University of Viçosa, Viçosa, Minas Gerais 37.200-000, Brazil.
  • Chalfun-Junior A; Department of Biology, Federal University of Lavras, Lavras, Minas Gerais 37.200-000, Brazil.
  • Coelho TC; Department of Animal Science, Federal University of Lavras, Lavras, Minas Gerais 37.200-000, Brazil.
  • Gionbelli M; Department of Animal Science, Federal University of Lavras, Lavras, Minas Gerais 37.200-000, Brazil.
  • Paiva LV; Department of Chemistry, Federal University of Lavras, Lavras, Minas Gerais 37.200-000, Brazil.
  • Carvalho JRR; Department of Animal Science, Federal University of Lavras, Lavras, Minas Gerais 37.200-000, Brazil.
  • Ladeira MM; Department of Animal Science, Federal University of Lavras, Lavras, Minas Gerais 37.200-000, Brazil. Electronic address: mladeira@dzo.ufla.br.
Meat Sci ; 133: 110-118, 2017 Nov.
Article em En | MEDLINE | ID: mdl-28666109
Fourteen Nellore and 14 Angus young bulls with BW of 381±11.8kg were randomly assigned into 2 feeding groups (whole shelled corn without forage (WSC) or corn silage and ground corn (GC)) to evaluate chemical composition and expression of genes involved in lipid metabolism in the longissimus thoracis (LT). We hypothesized that bulls fed the WSC diet have greater amounts of intramuscular fat and Angus have higher expression levels of PPAR and SREBF. Meat from Angus bulls had greater ether extract compared to Nellore (P<0.05). Muscle from bulls fed the WSC diet had greater expression of PPARA (P<0.05) and lower levels of SREBF1 expression (P<0.01). The LT of Nellore fed GC had greater expression of FABP4, ACACA and SCD genes (P<0.01). In conclusion, the greater concentration of starch in the WSC diet did not increase marbling in the beef of bulls fed this diet due to the reduced expression of SREBF1.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Fatores de Transcrição / Bovinos / Regulação da Expressão Gênica / Dieta / Metabolismo dos Lipídeos / Carne Vermelha Limite: Animals Idioma: En Revista: Meat Sci Assunto da revista: CIENCIAS DA NUTRICAO Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Fatores de Transcrição / Bovinos / Regulação da Expressão Gênica / Dieta / Metabolismo dos Lipídeos / Carne Vermelha Limite: Animals Idioma: En Revista: Meat Sci Assunto da revista: CIENCIAS DA NUTRICAO Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido