黄霉素对淇河鲫生长性能、体成分和消化酶活性的影响

为了确定淇河鲫饲料中黄霉素的适宜添加量,以不添加黄霉素为对照,研究了饲料中添加2,4,6和8mg/kg黄霉素对淇河鲫生长性能、体成分和消化酶活性的影响。结果表明,饲料中添加黄霉素组淇河鲫的生物学综合评价高于对照组;添加4和6 mg/kg黄霉素处理组的饲料系数显著高于对照组(P<0.05);全鱼水分、粗蛋白、粗脂肪和灰分含量在各处理组和对照组间差异不显著(P>0.05);各处理组血清中葡萄糖和甘油三酯含量高于对照组;4,6和8 mg/kg黄霉素添加组血清游离脂肪酸含量显著高于对照组(P<0.05);4 mg/kg黄霉素添加组胰蛋白酶活性显著高于对照组和8 mg/kg黄霉素添加组(P<0.05),4和6 mg/kg黄霉素添加组肠蛋白酶活性显著高于对照组(P<0.05);2,4和6 mg/kg黄霉素添加组胰淀粉酶活性显著高于对照组(P<0.05),4 mg/kg黄霉素添加组肠淀粉酶活性显著高于对照组(P<0.05);各黄霉素添加组胰脂肪酶和肠脂肪酶酶活性高于对照组,其中6 mg/kg添加组与对照组相比差异显著(P<0.05)。结果提示,饲料中添加适量黄霉素能促进淇河鲫生长,提高淇河鲫消化酶活性,但不影响鱼体营养成分,其中以添加4 mg/kg黄霉素效果最佳。

Effects of flavomycin on growth performance,whole body composition and activities of digestive enzymes in Carassius auratus gibelio var

In order to identify the optimum additive dose of flavomycin in the feed of Carassius auratus gibelio var,an experiment was conducted to investigate the effects of flavomycin(diets with the supplement of 2,4,6 and 8 mg/kg flayomycin,respectively) on growth performance,body composition and digestive enzymatic activities of Carassius auratus gibelio var compared with the group without adding flavomycin.The results showed that the biology synthesis evaluation in the groups fed with flayomycin was superior to that in the control group.Feed coefficients in the groups fed with 4 and 6 mg/kg flayomycin were significantly higher than that in the control group(P<0.05).No significant differences were observed among the treatments in terms of moisture,crude protein,crude lipid and ash in whole body(P>0.05).The concentrations of serum glucose and triglyceride in the groups fed with flayomycin were higher.The concentrations of serum free fatty acid in the groups fed with 4,6 and 8 mg/kg of flayomycin were significantly higher than that in the control group(P<0.05).The activities of trypsin in the group fed with 4 mg/kg flayomycin were significantly higher than those in the control group and the group fed with 8 mg/kg flayomycin(P<0.05).The activities of intestinal protease in the group fed with 4 and 6 mg/kg flayomycin were significantly higher than those in the control group(P<0.05).The amylase activities in hepatopancreas in the groups fed with 2,4 and 6 mg/kg flayomycin were significantly higher than those in the control group(P<0.05).The amylase activities in intestine in the group fed with 4 mg/kg flayomycin were significantly higher than those in the control group(P<0.05).The lipase activities in hepatopancreas and intestine in the groups fed with flayomycin were higher than those in the control group.The lipase activities in hepatopancreas and intestine in the group fed with 6 mg/kg flayomycin were significantly higher than those in the control group(P<0.05).The results suggest that certain levels of dietary flayomycin supplements can increase the growth and the digestive enzymatic activities of Carassius auratus gibelio var,decrease feed coefficient and have no reverse effect on nutritional composition of whole fish body.Among these doses,the 4 mg/kg has the best effects.