Pilot test of formula feed for shrimp with low fishmeal
In order to investigate the effect of formula feed for shrimp with low fishmeal on growth of the whiteleg shrimp(Litopenaeus vannamei)in pond culture,optimized ratio of animal protein and vegetable protein was used to replace fishmeal to make formula feed for the shrimp(containing 3％fishmeal),and a pilot test was conducted in shrimp pond in Tianjin.The water quality of the ponds was detected and shrimp growth performance was measured.The results showed that the average body length and average weight of shrimp in the test group were lower than those in the control group,but the differences were not significant(P＞0.05).For shrimp in the test group,the range of hepatosmatic index was 3.58％～6.36％,the weight gain rate was 1 024.47％,the specific growth rate was 2.78％·d-1,and the average yield was 5 773.00 kg/hm2,and the feed conversion ratio was 1.10.Compared to shrimp in the control group,the differences were not significant(P＞0.05).This study indicates that fishmeal in shrimp diets can be replaced by other protein sources(fishmeal pro-portion can be as low as 3％)under pond culture conditions,without significant adverse effects on the growth performance of Litopenaeus vannamei.
万方数据
维普
