Differential lipid metabolism in beef cattle: A comparative study of high and low residual feed intake bulls.

ABSTRACT: This study investigated lipid metabolism differences between low and high residual feed intake (LRFI and HRFI) bulls. Fifty-five Simmental bulls (449.84 ± 8.49 kg) were fed the same diet for 161 d to determine RFI values. At the end of experiment, back fat thickness (BFT) and rib eye area (REA) were measured via ultrasound, and serum samples were collected for lipid metabolism indicators. Post-slaughter, subcutaneous adipose tissue was analyzed for lipid metabolism indicators, histology, transcriptomics, and lipid metabolomics. Results 1) Ultrasound showed LRFI bulls had lower BFT (P = 0.031) but higher REA (P = 0.021). 2) Serum total cholesterol (P = 0.028) and low-density lipoprotein cholesterol (P = 0.015) were lower in LRFI bulls. Leptin levels were lower in

SUBMITTER: Yi X 

PROVIDER: S-EPMC12391812 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature