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为了解空心莲子草多糖作饲料添加剂对鲤鱼的饲养效果,拓展鲤鱼饲料资源,在基础饲料中分别添加空心莲子草多糖0.5%、1.0%、1.5%、2.0%、2.5%,进行了池塘网箱饲养鲤鱼试验。结果表明:空心莲子草多糖作饲料添加剂饲养鲤鱼效果显著,与没有添加空心莲子草多糖的相比,平均成活率高1.8百分点、饵料系数下降0.26、尾日增重提高26.0%。以饲料中添加空心莲子草多糖1.5%的效果最好,鲤鱼成活率高达96.0%,个体增重为4.38倍,群体增重4.17倍,尾日增重0.75g,分别比对照高4百分点、1.57倍、1.67倍、增重56.25%。
In order to understand the breeding effect of Alternanthera philoxeroides feed additive on carp, and to expand the feed resources of carp, 0.5%, 1.0%, 1.5%, 2.0% and 2.5% of A. philoxeroides polysaccharide was added to the basic feed, Carp feeding test. The results showed that A. elegans could feed carp significantly. The average survival rate was 1.8 percentage points higher than that without A. alterniflora. The feed conversion coefficient decreased 0.26 and the daily gain increased 26.0%. The results showed that 1.5% of the photosynthetic rate of Alternanthera philoxeroides was the best, the survival rate of carp was as high as 96.0%, the weight of individuals was 4.38 times, the weight of population was 4.17 times, the weight gain was 0.75g, 4% higher than the control, 1.57 Times, 1.67 times, weight gain 56.25%.