ponds for over winter. If the fish were kept feeding
when temperature was dropped below10ć, it would
prolong culturing cycle, improve the yield and profit.
For both the adult and the young, the feeding
occurred at 6ć. The daily feeding rates rose rapidly
when the temperature increased from 6ć to 16ć.
After 16ć, the increase of daily feeding rates of the
adult was slowed until the water temperature reached
28ć, after which the feeding rate started to drop.
For the young fish, the daily feeding rate continued
to increase with a sudden increase between 26ć
and 28ć before a sharp drop when temperature
increased beyond 28ć. These results showed that
the metabolism increased when the temperature rose
gradually. As the temperature was risen to 28ć, the
daily feeding rate reached the maximum, indicating
that the optimum feeding temperature of the common
carp was 28ć, under which the daily feeding rate and
the growth rate should be at their maximum. Increase
or decrease of temperature from 28ć would result in
reduction in feeding and probably growth of the fish.
ponds for over winter. If the fish were kept feedingwhen temperature was dropped below10ć, it wouldprolong culturing cycle, improve the yield and profit.For both the adult and the young, the feedingoccurred at 6ć. The daily feeding rates rose rapidlywhen the temperature increased from 6ć to 16ć.After 16ć, the increase of daily feeding rates of theadult was slowed until the water temperature reached28ć, after which the feeding rate started to drop.For the young fish, the daily feeding rate continuedto increase with a sudden increase between 26ćand 28ć before a sharp drop when temperatureincreased beyond 28ć. These results showed thatthe metabolism increased when the temperature rosegradually. As the temperature was risen to 28ć, thedaily feeding rate reached the maximum, indicatingthat the optimum feeding temperature of the commoncarp was 28ć, under which the daily feeding rate andthe growth rate should be at their maximum. Increaseor decrease of temperature from 28ć would result inreduction in feeding and probably growth of the fish.
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