Comparative study on growth of supermale tilapia and monosex tilapia in earthen mini pond

An investigation was conducted to determine the comparative growth study of supermale tilapia and monosex tilapia in earthen mini ponds from May-July 2012. Four treatments were considered having two replicates. For supermale tilapia, treatments were named as ST 1 and ST 2, and for monosex tilapia, they were MT 1 and MT 2. All fish were of the same age group with a mean body weight of 1.4 g, and feeding frequency in all treatments was twice a day. Fish were fed a diet at a rate of 30% of their body weight for the first thirty days, gradually reduced to 15% for the next thirty days, and 5% until the termination of the experiment. Final weight, weight gain, average daily weight gain, % weight gain, and production of supermale tilapia were significantly (p< 0.05) higher than those of monosex tilapia. However, SGR (% day), FCR, and survival rate of supermale tilapia were not significantly (p> 0.05) varied. The best weight gain of 124.85 g was observed in ST 1 after a 90-day culture period, indicating that supermale tilapia has a significantly high growth potential compared to monosex tilapia under mini pond conditions.