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1000 g maize cob mixed material was synergistically fermented by adding 2.5% composite probiotics and 0.06-0.08% NSP (nonstarch polysaccharide) enzyme to prepare fermented feed, and its effectiveness as feed for fattening pigs was investigated. The results showed that the appearance, texture, and nutrient quality of maize cobs significantly improved after fermentation, the total number of bacteria was 4.5×1010 CFU/g, and the protein content was 7.1%. Compared to the control group, the pigs in the 6% fermented maize cob feed experimental group showed significantly increased daily feed intake, daily weight gain, and nutrient digestion rate (p<0.05) and reduced feed conversion ratio (p<0.05). Most indicators including slaughter performance and meat quality significantly improved. In addition, beneficial bacteria including Lactobacillus in the intestines of the finishing pigs significantly increased, and pathogenic bacteria including Escherichia coli in the intestines and feces were found to be significantly reduced (p<0.05). The intestinal crypt depth, VH/CD ratio, and ileal mucosal immunity of the finishing pigs also significantly improved (p<0.05). The cytokine content and gene expression of sIgA, IL-8, and TNF-α were found to be significantly increased (p<0.05). It could be concluded that the addition of 6% fermented maize cob feed to the diets of finishing pigs could promote their growth, improve their production performance and slaughter performance meat quality, and enhance their intestinal microecological balance and immunity.

biomed research international

A Study on the Preparation of Microbial and Nonstarch Polysaccharide Enzyme Synergistic Fermented Maize Cob Feed and Its Feeding Efficiency in Finishing Pigs