Abstract:
In order to investigate the optimal daily feeding rates of
Micropterus salmoides in land-based circular pond culture,five feeding rates were set as 1.6%,1.9%,2.2%,2.5% and 2.8%,and the water temperature of the experimental pond was set as 24.8℃ to 26.5℃.The effects of different feeding levels on the growth and main breeding efficiency of
M.salmoides with initial body weight of(116.00±10.68) g were studied.The results showed that the daily weight gain rate,specific growth rate and output per square meter were the highest in B5 group(daily feeding rate 2.8%),followed by B3 group(daily feeding rate 2.2%).There were no significant differences in feed conversion ratio and coefficient of variation between groups(
P>0.05).Based on the comprehensive evaluation of main growth indexes and breeding efficiency parameters,the optimal daily feeding rate of
M.salmoides with an initial body weight of(116.00±10.68) g was 2.2% in land-based circular pond culture.