Growth Performance and Postprandial Metabolic Responses of Southern Catfish ( Silurus meridionalis Chen) Fed Formulated Feed and Loach Flesh

摘要

Growth and postprandial metabolic responses of juvenile Southern catfish, Silurus meridionalis Chen fed either formulated feed or loach flesh were investigated at 27.5°C. The feeding rate of loach flesh was significantly lower (0.05) but the specific growth rate was significantly higher than that of formulated feed. Both feed efficiency and protein efficiency ratio of loach fresh were significantly higher than those of formulated feed. The specific dynamic action duration and coefficient of loach flesh were significantly smaller than those of formulated feed. The results suggested that Southern catfish was more adaptive to loach flesh. The postprandial metabolic response might partly explain the observed differences in nutrient utilization between the two foods.