大蒜茎粉和牛至草粉对镜鲤生长性能、消化酶活性以及血清生化指标的影响

试验研究了大蒜茎粉和牛至草粉对镜鲤(Cyprinus carpio L.minor)生长性能、消化酶活性及血清生化指标的影响,为进一步开发利用天然植物添加剂提供理论参考。试验共设7个处理组:G1空白对照组,G2添加10 mg/kg黄霉素,G3、G4分别添加0.5%和2.5%大蒜茎粉,G5、G6分别添加0.1%和0.5%牛至草粉,G7添加0.5%大蒜茎粉和0.5%牛至草粉。每个处理设3个重复,每个重复10尾鱼,初始体重为(201.45±16.25) g,试验共进行8周。结果表明:与G1和G2相比,G3显著提高了特定生长率和增重率,显著降低了饵料系数(P<0.05),G3、G4和G5、G6显著提高了蛋白质效率(P<0.05)。与G1对比,G3显著提高了肝胰脏、前肠和中肠蛋白酶活性(P<0.05),肝胰脏和中肠脂肪酶活性(P<0.05)。G4显著提高了肝胰脏蛋白酶活性(P<0.05)。G5、G6、G7比G1和G2显著提高了前肠淀粉酶和脂肪酶活性(P<0.05)。与G1相比,G3、G6和G7血总蛋白、白蛋白、球蛋白浓度显著提高(P<0.05),G2血清总胆固醇、谷草转氨酶和谷丙转氨酶显著降低(P<0.05),各试验组肌酐均无显著差异(P>0.05)。结论:饲料中添加0.5%大蒜茎粉可以有效提高镜鲤生长性能,但是添加牛至草粉促生长作用不明显。

Effects of garlic stem powder and oregano leaf powder on growth performance,digestive enzyme activity and serum biochemical indexes of the carp(Cyprinus carpio L.minor)

This trial investigated the effects of garlic stem powder and oregano leaf powder on growth performance, digestive enzyme activity and serum biochemical indexes of the mirror carp (Cyprinus carpio L.minor) .A total of seven trial treatment groups: G1 was control group, G2 added 10 mg/kg Flavomycin, G3, G4 added 0.5% and 2.5% garlic stem powder respectively, G5, G6 added 0.1% and 0.5% oregano leaf powder respectively, G7 added 0.5% garlic stem powder and 0.5% powder.Each treatment had 3 replicates of 10 fish with initial body weight (201.45±16.25) g.The feeding trial was conducted for 8 weeks.The results showed: Compared with G1 and G2, the specific growth rate and weight gain rate were increased and feed conversion rate was reduced significantly of G3 garlic group (P<0.05) ;the efficiency of the protein was increased significantly of G3, G4 garlic group and G5, G6 oregano group (P<0.05) .Compared with G1, the activity with protease and lipase in hepatopancreas and protease in foregut and midgut were significantly increased of G3 garlic group (P<0.05) ;the protease activity in hepatopancreas was significantly increased of G4 garlic group (P<0.05) ;the amylase and lipase activity in intestinal were significantly higher of G5, G6, G7 than of G1, G2 (P<0.05) .Compared with G1, the TP, ALB and GLB were increased significantly of G3, G6 and G7 (P<0.05) ;CHOL, ALT and AST of G2 were significantly reduced (P<0.05) .Conclusion: the feed with 0.5% garlic stem powder can effectively improve the growth performance;but oregano leaf powder can''t promote the growth of the mirror carp significantly.