Effects of polysaccharide from fermented wheat bran on growth performance, muscle composition, digestive enzyme activities and intestinal microbiota in juvenile common carp
2020
Wang, Rui‐Fang | An, Xiao‐Ping | Wang, Yuan | Qi, Jing‐Wei | Zhang, Jun | Liu, Yu‐Hui | Weng, Mei‐Qi | Yang, Yan‐Ping | Gao, Ai‐Qin
The present study evaluated the effect of dietary polysaccharide from fermented wheat bran on growth performance, muscle composition, digestive enzyme activities and intestinal microbiota of juvenile common carp (Cyprinus carpio L.). Four diets supplemented with 0 (D0), 1.0 (D1), 2.0 (D2) and 4.0 (D3) g/kg fermented wheat bran polysaccharide (FWBP) were prepared. Fish were randomly assigned into four groups, each group having four replicates (30 fish/replicate) and fed with experimental diets for 8 weeks. Compared with the D0 group, the D3 group had higher final body weight and weight gain (p < .05). The amylase activity in the intestine and hepatopancreas of D1 and D2 groups and pepsin and trypsin activities in the hepatopancreas of D2 and D3 groups were significantly higher than D0 group. Significantly increased muscle protein and lipid content while reduced moisture content was observed in D1 group; additionally, D3 group had significantly lower muscle lipid content. The population of Bifidobacterium spp. in the intestine digesta of D1 and D2 groups was significantly increased, whereas lactic acid bacteria (LAB) and Escherichia coli were unaffected. Collectively, dietary FWBP supplementation could enhance digestive enzyme activities and Bifidobacterium population and change the muscle composition and improve growth performance of common carp.
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