Effect of plant from 5 sources on digestibility coefficient and growth performance in the sex-reversed red tilapia (Oreochromis niloticus Linn.)

The effect of plant from 5 sources i.e. palm kernel cake, copra meal, corn, rice bran and cassava were studied in sex-reversed red tilapia for digestibility coefficient and growth performance. For each feed formula, 30% of each plant material was mixed with 70% basal feed. The feeds were given to sex-reversed red tilapia, with weight ranging from 3.14-3.20 g stocked in 200-l glass aquaria with a closed recirculating system. Each treatment comprised 4 replications. The experimental period was 6 weeks. The best results on average body weight, weight gain, specific growth rate and digestibility coefficient were noted for the fish group given the feed containing palm kernel cake, while the poorest result was obtained from the group fed with rice bran. Fish groups given the feed with copra meal, corn and cassava showed results in descending order.