饲料工业2026，Vol.47Issue(7)：101-107,7.DOI:10.13302/j.cnki.fi.2026.07.014
粪肠球菌HY43对锦鲤生长、免疫和肠道菌群的影响
Effect of Enterococcus faecalis HY43 on Growth,Immunity and Gut Microbiota of Koi Carp(Cyprinus carpio var.Koi)
摘要
Abstract
The purpose of this experiment was to study the effects of Enterococcus faecalis HY43 on growth,immunity,antioxidation and gut microbiota in koi carp(Cyprinus carpio var.Koi).156 healthy koi fish were randomly divided into 4 groups.The control group was fed with basal diet,and the treatment group was fed with 107 CFU/mL,108 CFU/mL and 109 CFU/mL of freeze-dried powder of Enterococcus faecalis HY43,which were recorded as 107,108 and 109 groups,respectively,for 6 weeks.The results showed that different concentrations of Enterococcus faecalis HY43 had no significant difference on the growth index of koi fish(P>0.05).The content of serum growth hor-mone in each treatment group was significantly higher than that in the control group(P<0.05),and that in group 109 was significantly higher than that in groups 107 and 108(P<0.05).The serum alka-line phosphatase activity of groups 108 and 109 was significantly higher than that of the control group and group 107(P<0.05);The serum acid phosphatase activity of group 109 was significantly lower than that of the control group and group 107(P<0.05),and the serum lysozyme activity of group 109 was significantly higher than that of the control group(P<0.05).The dominant phylum is composed of Proteobacteria,Fusobacteriota and Firmicutes.Compared with the control group,the relative abundance of Proteus in group 108 decreased,that of Fusobacterium in group 108 and 109 increased,and that of Firmicutes in group 108 increased.The β-diversity of intestinal bacteria in 108 and 109 groups was significantly different from that in the control group(P=0.005,R=0.628 31;P=0.001,R=0.868 22);Twenty-eight species with significant differences were identified by LEfSe analysis.Compared with the control group,107 groups were enriched with Delftia,108 groups with Cetobacterium and Rombout-sia,and 109 groups with more bacteria,including Pseudomonas,Aeromonas,Massilia and Actinomyces.Therefore,it is concluded that adding Enterococcus faecalis HY43 to feed can be used in koi fish to improve koi fish's immunity and antioxidant capacity and regulate gut microbiota.关键词
锦鲤/粪肠球菌/生长/免疫/抗氧化/肠道菌群Key words
Cyprinus carpio var.Koi/Enterococcus faecalis/growth/immunity/antioxidant/gut microbiota分类
农业科技引用本文复制引用
谷雨萱,张蓉,赵海洋,朱华..粪肠球菌HY43对锦鲤生长、免疫和肠道菌群的影响[J].饲料工业,2026,47(7):101-107,7.基金项目
现代农业产业技术体系北京市渔业创新团队项目[BAIC07-2025] （）
