RESUMEN
In 8 weeks feeding experiment, carp fingerlings fed raw soybean, heat treated full fat soybean [FFSB] dry heat or autoclaving and soybean meal in fish diets to investigate their effect on growth performance [weight gain, growth rate, protein efficiency ratio], mortality rate and whole body composition also for histological changes in liver and first part of intestine. Fish fed the control diet that contained SBM showed the best results regarding the growth parameters, no mortality or histological changes. Fish fed raw FFSB showed low performance, high mortality rate [46.4%] and drastic pathological changes than groups fed on heat treated FFSB. It can be concluded that a more efficient method of heat treatment of FFSB when incorporated in carp diets was autoclaving for long period as it achieved better performance and lower mortality, however the soybean meal was the best