Effects of dietary surfactin supplementation on growth performance, intestinal digestive enzymes activities and some serum biochemical parameters of tilapia (Oreochromis niloticus) fingerlings
Effects of dietary surfactin supplementation on growth performance, intestinal digestive enzymes activities and some serum biochemical parameters of tilapia (Oreochromis niloticus) fingerlings
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DOI：
10.1080/1828051x.2016.1175325
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发表时间：
2016-04
影响因子：
2.5
通讯作者：
S. Zhai;Qingchao Shi;Xue-hao Chen
中科院分区：
文献类型：
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作者：
S. Zhai;Qingchao Shi;Xue-hao Chen
摘要本试验旨在研究添加表面素对罗非鱼（Oreochromis niloticus）鱼种生长性能、肠道消化酶活性及部分血清生化指标的影响。将320尾鱼随机分为4个处理组，每组4个重复，每个重复20尾鱼。4个处理组饲粮表面素水平分别为0（对照组）、50、100和200 mg/kg。试验期为7周。与对照组相比，添加表面素显著提高了末重、日采食量、增重率、饲料系数和蛋白质效率（p 0.05）。各表面素添加组肠道蛋白酶和脂肪酶活性显著高于对照组（p 0.05）。饲粮中添加表面素显著降低了天冬氨酸转氨酶和丙氨酸转氨酶活性（p < 0.05），显著降低了血尿素氮、甘油三酯、总胆固醇和低密度脂蛋白胆固醇水平（p < 0.05），显著提高了溶菌酶活性和高密度脂蛋白胆固醇水平（p < 0.05）。综上所述，饲料中添加表面素可促进罗非鱼鱼种的生长性能，提高肠道消化酶活性和部分血清生化指标。
Abstract This trial was conducted to investigate the effects of supplementary surfactin on growth performance, intestinal digestive enzymes activities and some serum biochemical parameters of tilapia (Oreochromis niloticus) fingerlings. Three hundred and twenty fish were randomly divided into four treatment groups with four replicates in each group and 20 fish in each replicate. The dietary surfactin levels of four treatment groups were 0 (control group), 50, 100 and 200 mg/kg. The trial period was 7 weeks. Compared with the control group, final body weight, daily feed intake, weight gain rate, feed conversion ratio and protein efficiency ratio were improved significantly by surfactin supplementation (p 0.05). The activities of protease and lipase in intestine of surfactin supplementation groups were significantly higher than those of the control group (p 0.05). The activities of aspartate aminotransferase and alanine aminotransferase were decreased significantly by dietary surfactin supplementation (p < 0.05), the levels of blood urea nitrogen, triglyceride, total cholesterol and low-density lipoprotein cholesterol were also decreased significantly (p < 0.05), while lysozyme activity and the high-density lipoprotein cholesterol level were increased significantly by the surfactin supplementation (p < 0.05). In conclusion, we demonstrated a promotion of growth performance and improvement of intestinal digestive enzymes activities and some serum biochemical parameters of tilapia fingerlings by dietary surfactin supplementation.