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Transcriptome analyses reveal reduced hepatic lipid synthesis and accumulation in more feed efficient beef cattle

Mukiibi, Robert ; Vinsky, Michael ; Keogh, Kate A ; Fitzsimmons, Carolyn ; Stothard, Paul ; Waters, Sinéad M ; Li, Changxi

Scientific reports, 2018-05, Vol.8 (1), p.7303-12, Article 7303 [Periódico revisado por pares]

England: Nature Publishing Group

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  • Título:
    Transcriptome analyses reveal reduced hepatic lipid synthesis and accumulation in more feed efficient beef cattle
  • Autor: Mukiibi, Robert ; Vinsky, Michael ; Keogh, Kate A ; Fitzsimmons, Carolyn ; Stothard, Paul ; Waters, Sinéad M ; Li, Changxi
  • Assuntos: Amino acids ; Beef ; Bovidae ; Carbohydrate metabolism ; Cattle ; Cell death ; Cell survival ; Energy metabolism ; Feeds ; Gene expression ; Genomes ; Lipids ; Liver
  • É parte de: Scientific reports, 2018-05, Vol.8 (1), p.7303-12, Article 7303
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
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  • Descrição: The genetic mechanisms controlling residual feed intake (RFI) in beef cattle are still largely unknown. Here we performed whole transcriptome analyses to identify differentially expressed (DE) genes and their functional roles in liver tissues between six extreme high and six extreme low RFI steers from three beef breed populations including Angus, Charolais, and Kinsella Composite (KC). On average, the next generation sequencing yielded 34 million single-end reads per sample, of which 87% were uniquely mapped to the bovine reference genome. At false discovery rate (FDR) < 0.05 and fold change (FC) > 2, 72, 41, and 175 DE genes were identified in Angus, Charolais, and KC, respectively. Most of the DE genes were breed-specific, while five genes including TP53INP1, LURAP1L, SCD, LPIN1, and ENSBTAG00000047029 were common across the three breeds, with TP53INP1, LURAP1L, SCD, and LPIN1 being downregulated in low RFI steers of all three breeds. The DE genes are mainly involved in lipid, amino acid and carbohydrate metabolism, energy production, molecular transport, small molecule biochemistry, cellular development, and cell death and survival. Furthermore, our differential gene expression results suggest reduced hepatic lipid synthesis and accumulation processes in more feed efficient beef cattle of all three studied breeds.
  • Editor: England: Nature Publishing Group
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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