摘要:
在罗非鱼基础饲料(对照组)中分别添加不同比例溢多酶P-8901,探讨溢多酶P-8901对罗非鱼生产性能的影响。结果表明,在罗非鱼鱼种试验中,与对照组相比,添加100 g·t-1、150 g·t-1、180 g·t-1溢多酶P-8901试验组的饲料效率分别比对照组提高8.48%、7.89%和9.03%(P0.05);增重率分别提高9.00%、10.33%和9.50%(P0.01);生长率分别提高4.00%、4.48%和4.13%(P0.01);蛋白质效率分别提高8.38%、7.75%和8.84%(P0.01)。养成试验中,添加100 g·t-1、150 g·t-1、180 g·t-1溢多酶P-8901试验组饲料系数分别比对照组提高4.28%、5.41%和6.56%(P0.05);增重率分别提高6.31%、7.94%和8.82%(P0.01);生长率分别提高3.68%、4.72%和5.26%(P0.01);蛋白质效率分别提高5.36%、7.53%和9.24%(P0.01)。饲养结果表明,添加溢多酶P-8901能够明显提高饲料利用率,提高罗非鱼的生长性能,尤其对鱼种的效果比养成阶段更好。
Abstract:
The effects of Yiduozyme P-8901 on the growth of tilapia(Oreochomis nilotica) were studied.Yiduozyme P-8901 was added to the base feed(control) at the rate of 100 g·t-1,150 g·t-1,and 180 g·t-1.There were 420 juvenile tilapia with an average individual body weight of about 5.1 g were randomly divided into 4 groups.Each group comprised 3 repetitions,and 35 fish per repetition.360 adult tilapia averaging 43.1 g each were also randomly divided into 4 groups.Each adult group consisted of 3 repetitions,and 30 fish per repetition.The results showed that in the juvenile groups,the feed efficiencies of the feed containing 100 g t-1,150 g t-1,and 180 g t-1 Yiduozyme P-8901 significantly increased by 8.48%,7.89%,and 9.03%,respectively(P0.05),as compared to the control.The body weight gain rates were significantly higher than the control group by 9.00%,10.33%,and 9.50%,respectively(P0.01);the growth rates significantly increased by 4.28%,5.41%,and 6.56%,respectively(P0.01);and,the protein efficiencies significantly increased by 8.38%,7.75%,and 8.84%,respectively(P0.01).For the adult fish,the feed efficiencies of the feed containing 100 g·t-1,150 g·t-1,and 180 g·t-1 Yiduozyme P-8901,significantly increased by 8.48%,7.89%,and 9.03%,respectively as compared to the control(P0.01);the body weight gain rates significantly increased(P0.05) by 6.31%,7.94%,and 8.82%,respectively;the growth rates significantly increased by 3.68%,4.72%,and 5.26%,respectively(P0.01);and,the protein efficiencies significantly increased by 5.36%,7.53%,and 9.24%,respectively(P0.01).The results suggest that adding enzyme P-8901 to the base feed could significantly improve feed utilization and growth performance.And,the effects were greater on the juvenile than the adult tilapia.
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