Abstract:
The larva of
Pomoxis nigromaculatus were fed with microzooplankton, fish paste, egg yolk, eel formula feed in this experiment.The results showed that there were significant differences in first feeding rate, growth rate and survival rate of larva
P. nigromaculatus (
P<0.05) after 20 days of cultivating.The group of microzooplankton had the highest first feeding rate of 94.44%, and had the highest growth rate.The average daily length reached 0.43 mm, and the final survival rate was 56.03%.The growth rate and final survival rates of the fish paste, egg yolk and eel feed groups were very low, the average daily length reached 0.22, 0.14 and 0.11 mm respectively, and the final survival rate were 15.24%, 12.80% and 8.05% respectively.In conclusion, under the conditions of this experiment, the best diet of larva
P. nigromaculatus was microzooplankton.The nonlinear growth model of logistic could preferably fit the growth curve of black crappie larva with different initial feed (R
2 ≥ 0.96).