plSSN : 0374-8111 | elSSN : 2287-8815
plSSN : 0374-8111 | elSSN : 2287-8815
plSSN : 0374-8111elSSN : 2287-8815
Effects of Starvation on Survival and Physiological Response in Red Sea Bream Pagrus major under Low Water Temperature
이다연·박태진·김창윤·도용현*
국립수산과학원 양식연구과
This study investigated the effects of re-feeding after starvation on survival, growth performance, and physiological responses in red sea bream Pagrus major under low water temperature. The experiment included a feeding group that was continuously fed and a starvation group that fasted from February to April, followed by re-feeding from May to July. During the fasting period, the starvation group lost 12.3% body weight, whereas the feeding group showed a modest weight gain 2.6%. During re-feeding the starvation group exhibited nearly twice the weight gain of the feed ing group, indicating rapid compensatory growth. By the end of the experiment the final body weights were 934±82 g and 930±54 g with no significant difference between groups. The survival rate of the starvation group was 70%, 6% higher than that of the feeding group (64%). These results suggest that refeeding after a fasting period under low water temperatures induces compensatory growth in P. major without negatively affecting final growth, supporting its use as a beneficial aquaculture strategy.
Red sea bream, Low water temperature, Starvation, Re-feeding, Compensatory growth