Cottonseed meal fermented by Candida tropical reduces the fat deposition in white-feather broilers through cecum bacteria-host metabolic cross-talk
- 30 March 2020
- journal article
- research article
- Published by Springer Science and Business Media LLC in Applied Microbiology and Biotechnology
- Vol. 104 (10), 4345-4357
- https://doi.org/10.1007/s00253-020-10538-7
Abstract
In the present study, effects of cottonseed meal fermented by Candida tropicalis (FCSM) on fat deposition, cecum microbiota, and metabolites and their interactions were studied in broilers. A total of 180 1-day-old broilers were randomly assigned into two groups with six replicates of 15 birds in each. The birds were offered two diets consisted one control, i.e., supplemented with 0% FCSM (CON) and an experimental, with 6% FCSM (FCSM). Illumina MiSeq sequencing and liquid chromatography-mass spectrometry were used to investigate the profile changes of the cecum microbes and metabolites and the interactions among fat deposition, microbes, and metabolites. Results showed that at the age of 21 days, both the abdominal fat and subcutaneous fat thickness of the experimental birds decreased significantly (P < 0.05) in response to the dietary FCSM supplementation. The predominant microbial flora in cecum consisted Bacteroidetes (53.55%), Firmicutes (33.75%), and Proteobacteria (8.61%). FCSM diet increased the relative abundance of Bacteroides but decreased obese microbial including Faecalibacterium, Lachnospiraceae, Ruminococcaceae, and Anaerofilum. Cecum metabolomics analysis revealed that lipids, organic acids, vitamins, and peptides were significantly altered by adding FCSM in diet. Correlation analysis showed that abdominal fat and subcutaneous fat thickness related negatively with Bacteroides while the same related positively with Faecalibacterium, Lachnospiraceae, and Ruminococcaceae. Moreover, abdominal fat and subcutaneous fat thickness were related negatively with nicotinic acid, sebacic acid, thymidine, and succinic acid. These findings indicated that FCSM reduced the fat deposition by regulating cecum microbiota and metabolites in broilers. The results are contributory to the development of probiotics and the improvement in the production of broilers.Keywords
Funding Information
- National Natural Science Foundation of China (31760686)
- Shihezi University Young Innovative Talents Program (CXRC201807)
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