The influence of 3,3',5-triiodo-L-thyronine on growth survival and body composition of slow-growing development elvers (Anguilla rostrata L.).

Effect of 3,3',5-triiodo-L-thyronine (T3) on survival, growth and body composition (protein, fat and ash) of slow-growing (Anguilla rostrata L.) elvers was investigated. A significant increase was found in the mean weight of slow growing elvers receiving diets containing 20 ppm T3 and held in the low water turnover system. A significant increase was also found in the weight of slow-growing elvers receiving diets containing 40 or 60 ppm T3 and held in the high water turnover system. Percentage protein (dry weight basis) was significantly correlated to body weight, but was not significantly correlated to concentration of T3 in the diet. There were no significant differences between the total fat content of slow-growing elvers when compared to the total body fat of control elvers.