저수온기 참돔(Pagrus major) 절식에 따른 생존과 생리적 반응
Effects of Starvation on Survival and Physiological Response in Red Sea Bream Pagrus major under Low Water Temperature
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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 feeding 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.
Abstract
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 feeding 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.