Utilization Of Rainbow Trout, Salmo Gairdnerii Richardson, In A Double-Crop Fish Culture System In South Georgia

Techniques were investigated for growing rainbow trout, Salmo gairdnerii Richardson, from fingerlings to market size during the winter months in a recirculation, flowing water fish culture system where channel catfish, lctalurus punctatus (Rafinesque) are grown in summer. Trout stocked having a mean weight of 0.1 Ib had a mean weight of 0.7 Ib in approximately 100 days with a feed conversion ratio of 1.29 to I. Survival of the fish was 82%. Water quality parameters and control of parasite infestations during the culture period are also discussed.