To study the growth and immune performance in grass carp under three different feeding conditions, the grass carp were divided into 3 groups （group A, group B and group C）, group A fed with fodder, group B fed with Guimu No. 1 hybrid grass in the morning and fodder in the afternoon, group C fed with Guimu No. 1 hybrid grass for 8 months. The results showed that grass carp fed with fodder has grown fast, of which the weight is significantly higher than those were fed with fresh grass （P〉0.05）; their body length was also greater than those f...
