平均体长为33.77mm，日平均增长1.84mm，平均体重为259.86mg，日平均增重17.15mg。

• At the end of four-week experiment, the mean body length of the fries of the control pool was 33.77 mm, with an average daily growth of 1.84 mm; the mean body weight reached 317.33 mg with an average daily gaining of 17.15 mg.