复合酶制剂对异育银鲫生长和饲料表观消化率的影响

Effects of compound enzymes on the growth and apparent digestibility of feeds in allogynogenetic crucian carp

选择360条体重6.71g左右的健康异育银鲫研究在基础饲料中分别添加0、100、200mg/kg和400mg/kg的复合酶制剂对异育银鲫生长和营养物质表观消化率的影响。试验期为56d。试验结果表明,添加200mg/kg复合酶制剂组异育银鲫的增重率和特定生长率最大,显著高于对照(P<0.05);且该组异育银鲫对饲料粗蛋白质、磷及能量表观消化率最高,饲料系数最低,显著低于对照组(P<0.05)。说明添加200mg/kg复合酶制剂可显著提高异育银鲫对饲料的表观消化率,促进异育银鲫的生长,同时有效降低饲料系数。

Three-hundred and sixty allogynogenetic crucian carp were chosen to detrermine the effects of compound enzyme preparation supplemented in diet on the indexes of the growth performance and apparent digestibility of feeds in allogynogenetic crucian carp （average initial weight 6.71 glfor 56 days.The results showed：the weight gain rate,specific growth rate and the apparent digestibility of crude protein,phosphonium and energy with 200 mg/kg compound enzyme preparation group were highest among all groups,and significantly higher than those of the control group （P 〈 0.05）;and its feed conversion ratio was lowest in all groups ,and significantly lower than that of the control group（P 〈 0.05）.These resuits suggested that：supplementation of 200 mgJkg of the compound enzyme preparation in the allogynogenet/c crucian carp diet could significantly improve the apparent digestibility of feed, enhance growth performance and decline the feed conversion ratio.