外源木聚糖酶对异育银鲫生长、超氧化物歧化酶及溶菌酶活性的影响

在基础饲料中分别添加0 mg/kg、50 mg/kg、100 mg/kg和200 mg/kg的木聚糖酶,饲养初始体重6.71 g左右的异育银鲫(Carassius auratus gibelio)56 d后,研究了木聚糖酶对异育银鲫生长、超氧化物歧化酶(SOD)和溶菌酶活性的影响。结果表明:添加100 mg/kg木聚糖酶组异育银鲫的增重率和特定生长率最大,显著大于对照组(P<0.05),同时该组异育银鲫的饲料系数最低,显著低于对照组(P<0.05)。添加50 mg/kg和100 mg/kg木聚糖酶可显著提高异育银鲫血清、脾脏、肝胰脏、头肾SOD活性以及血清、头肾、脾脏溶菌酶活性。

Effects of Exogenous-xylanase Additive on the Growth Performance,Superoxide Dismautase and Lysozyme Activity of Allogynogenetic Crucian Carp

The growth performance,the superoxide dismautase activity(SOD)and lysozyme activity were investigated after fed allogynogenetic crucian carp(average initial weight 6.71 g)with 4 groups of experiment diet by adding 0 mg/kg,50 mg/kg,100 mg/kg,200 mg/kg exgenous-xylanase in basic diet for 56 d.The results showed that the weight gain rate and specific growth rate in 100 mg/kg group were the highest among 4 groups,which were significantly higher than that in control group(P<0.05),and the feed coefficient in this group was the smallest,which were obviously lower than that in control group(P<0.05).Adding 50 mg/kg and 100 mg/kg exogenous-xylanase could significantly improve the superoxide dismautase activity in serum,spleen,hepatopancreas and head kidney,and lysozyme activity in serum,head kidney and spleen of allogynogenetic crucian carp.