不同饲料对南京丰年虫生长和生殖的影响

Effects of Various Feeds on the Growth and Reproduction of Chirocephalus Nankinensis (Shen)

用豆浆、米糠、酵母3种饲料培养南京丰年虫(Chirocephalus nankinensisShen),试验结果表明:这3种饲料对南京丰年虫生长和生殖力的影响差异显著。其中,体长和体重增长依次为豆浆>酵母>米糠,成活率高低顺序为米糠>豆浆>酵母;生殖力高低顺序为豆浆>米糠>酵母。故用豆浆为饲料培养南京丰年虫较适于其生长和种群的增殖。

Soybean milk, rice hran and yeast were used to nurse Chirocephalus nankinensis. The results showed that the effects of these three feeds on the growth and reproduction of Ctliroceptlahls nankinensis had significant differences. The body length increment and body weight gain were the highest in soybean treatment and the lowest in rice bran treatment. Survival rate of Chirocephalus nankinensis fed by rice bran ranked first, which was followed by soybean milk and the third was yeast. The experimental animal had the highest fecundity when tied by soybean ,uilk compared with rice bran and yeast. In conclusion, soybean milk was a suitable food source for the growth and mass ,nuhiplication of this species in nursery tanks.