Abstract
In order to investigate the utilization fo carbohydrate by carp, Cyprinus carpio, red sea bream, Chrysphrys major, and yellow tail, Seriola quinqueradiata, the fishes were reared on diets comtaining 0%, 10%, 20%, 30% and 40% dextrin for 30 days. Growty retardation and low feed efficiency were noticed in carp fed on a 40% dextrin diet, red sea bream on 30% dextrin and yellow tail on 20% edxtrin. The rates of the in crease in liver glycogen and the decrease in liver and muscle lipid were lowest tn carp. On the other hand, comparably high percent absorption of protein and dextrin was determined in all species regardless of dietary dextrin levels. From these Findings, it is presumed that the low growth and feed efficiency resulting from feeding high dextrin diests might be caused by the poor capability of utilizing the absorbed dextrin, and that the capacity of carp is highest among the fish tested.
