Hormonal sex reversal of Cichlid crossbreed flower horn (Amphilophus citrinelles X A. trimaculatus) using dietary 17 α-methyltestosterone at different concentrations

Abstract

Hormonal sex reversal of cichlids crossbreed using dietary 17α-methyl testosterone at the concentrations of 0, 20, 40 and 60 mg per 1 kg of feed for 21 days was conducted. The male percentage of each treatment was 53.62±14.32, 64.82±3.21, 73.27±0.92, and 77.10±9.32, respectively. The male percentages of treatments 3 and 4 were significantly higher (p<0.05) than those of treatment 1 and 2. Average body weight of treatment 1, 2, 3 and 4 were 34.93±3.84, 31.27±4.82, 31.07±6.40 and 22.53±1.67 g, respectively. Average body lengthswere 10.87±0.31, 10.53±0.47, 11.40±0.2 and 9.60±0.10 cm, respectively. The highest survival rate was observed in treatment 4 which was 76.47±2.94 % and was significantly higher (p<0.05) than those observed in treatment 1, 2 and 3.