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Rumen unprotected glucose tends to promote intramuscular fat deposition via microbial volatile fatty acid-mediated metabolic reprogramming in cattle:a multi-omics perspective through the rumen-jejunum axis 认领 引用
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作者 Yang Song Ning Liu +6 位作者 Zan Liang Zuo Wang Tingting Chu Qianglin Liu Weijun Shen Xiangmin Yan Fachun Wan 《Journal of Animal Science and Biotechnology》 SCIE CAS CSCD 2026年第4期2310-2336,共27页
Background The regulatory effects of glucose absorption at different sites(rumen vs.small intestine)on lipid metabolism exhibit significant variation in beef nutrition.This study aimed to investigate the regulatory pa... Background The regulatory effects of glucose absorption at different sites(rumen vs.small intestine)on lipid metabolism exhibit significant variation in beef nutrition.This study aimed to investigate the regulatory pathways of rumenprotected or unprotected glucose on lipid metabolism through the rumen-jejunum axis in Xinjiang Brown cattle.Results Thirty Xinjiang Brown cattle(females)with similar initial weight(410±22.4 kg)were randomly assigned to 3treatment groups(n=10 animals per group).The experimental groups were fed a basal diet with the following daily supplements per head:150 g palmitate coating(CON group),150 g palmitate coating plus 150 g rumen-unprotected glucose(RUG group),and 300 g rumen-protected glucose(containing 50%glucose;RPG group).The experiment lasted for 70 d.Supplementation with both rumen-unprotected glucose and rumen-protected glucose increased chest width(P=0.001),chest girth(P=0.013),abdominal girth(P=0.002),backfat thickness(P=0.041),omental fat weight(P=0.047),as well as serum concentrations of insulin(P0.05),but the differential bacterial biomarkers were either positively or negatively correlated with chest girth,abdominal girth,marbling score,backfat thickness,and deoxycholic acid(P<0.05).Conclusion Rumen-unprotected glucose supplementation enhances IMF deposition and meat quality attributes through microbial volatile fatty acid-driven metabolic reprogramming. 展开更多
关键词 Lipid deposition Rumen-jejunum axis Rumen-unprotected glucose Rumen-protected glucose Volatile fatty acids
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