Subspecies and diet affect the expression of genes involved in lipid metabolism and chemical composition of muscle in beef cattle

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...

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Bibliographic Details
Published in:Meat science 2017-11, Vol.133, p.110-118
Main Authors: 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.
Format: Article
Language:English
Subjects:
Adipose Tissue
Animal Feed - analysis
Animals
Cattle - genetics
Cattle - physiology
Diet - veterinary
Gene Expression Regulation - genetics
Gene Expression Regulation - physiology
Lipid Metabolism - genetics
Lipid Metabolism - physiology
Lipogenesis
Male
Marbling
Muscle, Skeletal - chemistry
Muscle, Skeletal - metabolism
PPAR
Red Meat - analysis
Silage
SREBP-1c
Transcription factors
Transcription Factors - genetics
Zea mays
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Summary: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
ISSN:0309-1740
1873-4138
DOI:10.1016/j.meatsci.2017.06.009