摘要
试验旨在研究饥饿素对鲫鱼(Carassius auratus L.)生长性能的影响。设1个对照组和1个试验组,对照组鲫鱼饲喂基础日粮,试验组在基础日粮的基础上添加2.2 g/kg饥饿素,每组4个重复,每个重复40尾鱼。结果表明:饲养8周后,试验组鱼的终末均重为2.34 g,较对照组提高10.90%(P<0.05);增重率为155.68%,较对照组提高19.81%(P<0.05);特定生长率为1.68%,较对照组提高13.51%(P<0.05);日采食量为0.073 g,比对照组提高17.74%,差异显著(P<0.05);饲料蛋白质利用效率为0.93%,较对照组提高5.48%(P>0.05);饵料系数为2.90,较对照组有所降低(P>0.05);存活率为100.00%,高于对照组,但差异不显著(P>0.05)。由此可见,在饲料中添加2.2 g/kg的饥饿素对鲫鱼生长性能具有明显的促进作用,且对其存活率无不良影响。
The effects of ghrelin on growth performance in Carassius auratus L.were studied.Three hundred and twenty fishes with body weight about 0.9 g were allotted to 2 dietary treatments with 4 replicates of 40 each （control group and ghrelin-treated group）.Ghrelin-treated group was supplemented with 2.2 g/kg ghrelin in basal diets.The period lasted for eight weeks.The results showed as follows：The final average weight,weight gain rate and specific growth rate of ghrelintreated group were all significantly higher than those of the control group （P 〈 0.05） ; the feed intake was also obviously higher than that of control group（P 〈 0.05 ）.The protein efficiency ratio of ghrelin-treated group was higher than that of the control group, but no significant difference was found（P 〉 0.05）.There was also no significant difference in feed efficiency and survival rate between two dietary treatments （P 〉 0.05）.The result indicated that adding 2.2 g/kg ghrelin in the basal diet could improve the growth performance of Cauratus L.
出处
《中国饲料》
北大核心
2012年第21期30-32,共3页
China Feed
关键词
饥饿素
鲫鱼
生长性能
ghrelin
carassius auratus L.
growth performance
