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Strategies to Enhance Cultivation of Anaerobic Bacteria from Gastrointestinal Tract of Chicken
Published on: May 10, 2024
Microbial bioactive complex supplementation is associated with gut microbial fermentation and feed conversion in
Mi Ae Park1, Soyeon Park1, Hee Seop Yu2
1Department of Research and Development, Center for Industrialization of Agricultural and Livestock Microorganisms, Jeongeup, Republic of Korea.
Abstract:
Improving feed efficiency while maintaining gut stability is a key nutritional objective during the post-weaning period in piglets. This study investigated the effects of dietary supplementation with a microbial bioactive complex (MBC), composed of Pediococcus pentosaceus CACC616, Lactobacillus reuteri CACC607, L. dextrinicus CACC889, L. pentosus CACC891, and Saccharomyces cerevisiae CACC699, on feed efficiency and gut microbial fermentation in weaned piglets. The complex was produced via solid-state fermentation (SSF), enabling the co-delivery of viable microorganisms and fermentation-derived metabolites. A total of 34 piglets were randomly assigned to either a basal diet (control) or the same diet supplemented with MBC for 33 days. The MBC contained approximately 2.4 × 109 CFU/g of lactic acid bacteria and 5.17 × 106 CFU/g of yeast and was included in the diet at 0.5%. MBC supplementation significantly improved feed conversion ratio (p < 0.05) and reduced average daily feed intake, indicating enhanced feed utilization efficiency without adverse effects on health-related blood parameters. The constituent strains exhibited desirable probiotic and safety characteristics, including tolerance to acidic and bile salt conditions, adhesion to porcine intestinal epithelial cells (IPEC-J2), absence of hemolytic activity, and low biogenic amine production. Microbial analysis revealed that taxa enriched in the MBC-treated group, including Succinivibrio and Succinivibrionaceae UCG-001, are associated with carbohydrate fermentation and succinate-producing pathways. Collectively, these findings indicate that dietary supplementation with MBC is associated with improved feed conversion and changes in fermentation-related gut microbial taxa in weaned piglets, supporting its potential application as a functional feed additive in swine production.
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