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Conjugated linoleic acid (CLA) is a potential nutritional strategy to regulate meat quality in pigs and produce high-quality pork. However, the effects of CLA on nutritional quality, lipid dynamics, microbiota, and their metabolites in the gut of pigs remain unclear. Our study explored the effects of CLA on lipo-nutritional quality based on a Heigai pig model and investigated the regulatory mechanism using an integrated analysis of multiple omics. A total of 58 Heigai finishing pigs (body weight: 85. 58 ± 10. 39 kg) were randomly divided into 2 treatments and fed diets containing 1% soyabean oil and 1% CLA for 40 days. 1% CLA significantly decreased the backfat thickness (P P P Parabacteroides, Bacteroides, and LachnospiraceaeUCG-010 increased and CLA changed the metabolome profiles and the short-chain fatty acid (SCFA) composition in the gut, which were significantly increased (P < 0. 05). Additionally, Pearson's correlation analysis indicated that differential microbial genera and SCFAs induced by CLA had tight correlations with the backfat thickness, IMF content and lipids in the LDM. CLA enhances the lipid accumulation and metabolism in muscle and these changes are associated with the production and functions of the differential bacteria and SCFAs in the gut of pigs.
Wang et al. (Sat,) studied this question.
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