Suitable Live Weight for Transferring Rainbow Trout Oncorhynchus mykiss (L., 1758) (Actinopterygii: Salmonidae) from Concrete Ponds to Earthen Ponds for Faster Growth and Better Feed Performance

摘要

Growth rate and feed performance were compared between rainbow trout fry with an average live weight of 2.01 +/- 0.02 g, which were transferred to earthen ponds at 10, 50 and 100 g average live weight and rainbow trout grown in a concrete pond. The best average weight gain was obtained in the group that was transferred to earthen ponds at 10 g average live weight (P <= 0.05).The feed performance of the fish that were transferred to the earth ponds at 10 and 50 g were statistically significantly different from the control fish and the ones transferred at 100 g average live weight (P <= 0.05).