不同水平艾叶粉对草鱼生长性能的影响

Effects of different levels of mugwort leaf powder on growth performance of Ctenopharyngodon idella

试验旨在研究不同水平的艾叶(Artemisia argyi)粉对草鱼(Ctenopharyngodon idella)生长性能的影响,并确定草鱼生长所需的最适艾叶粉水平。选择体重相近、健康的草鱼500尾,按照单因素试验设计原则,将其均分为4个处理组,每组5个重复,每个重复25尾草鱼。各组试验草鱼分别投喂含有0%(空白对照组)、2%、4%和8%的艾叶粉的试验饲料。饲养10周后,检测各组试验草鱼的体重、增重率、特定生长率、存活率、饲料系数等生长性能指标。结果显示,与对照组比较,试验草鱼投喂4%和8%的艾叶粉可以显著提高试验草鱼的试验末重、特定生长率、增重率(P<0.05);而投喂4%和8%的艾叶粉可以显著降低试验草鱼的饲料系数(P<0.05)。试验草鱼投喂艾叶粉对草鱼的存活率、脏体比、肝体比未产生显著性影响(P>0.05)。研究表明,草鱼投喂适量的艾叶粉可以显著提高其生长性能,综合指标数据及养殖成本考虑,草鱼养殖中添加4%的艾叶粉对其生长性能效果最佳。

The experiment was conducted to study the effects of different levels of mugwort(Artemisia argyi)leaf powder on the growth performance of grass carp(Ctenopharyngodon idella),and to determine the optimal level of mugwort leaf powder required for the growth of grass carp.A total of 500 healthy grass carp with similar body weight were divided into 4 treatment groups with 5 replicates per group and 25 grass carp per replicate according to the principle of single-factor experimental design.Grass carp in each group were fed experimental diets containing 0%(blank control group),2%,4%and 8%mugwort leaf powder,respectively.After feeding for 10 weeks,the growth performance indexes such as body weight,weight gain rate,specific growth rate,survival rate and feed coefficient of grass carp in each group were detected.The results showed that compared with the control group,feeding 4%and 8%mugwort leaf powder could significantly increase the final weight,specific growth rate and weight gain rate of grass carp(P<0.05).But feeding 4%and 8%mugwort leaf powder could significantly reduce the feed coefficient of grass carp(P<0.05).The survival rate,visceral-body ratio and hepato-body ratio of grass carp were not significantly affected by feeding mugwort leaf powder(P>0.05).The results showed that feeding proper amount of mugwort leaf powder could significantly improve the growth performance of grass carp.Considering the comprehensive index data and breeding cost,adding 4%mugwort leaf powder to grass carp culture had the best effect on its growth performance.