Journal of Aquaculture Research & Development

Abstract

Sex Reversal of Tilapia (Oreochromis niloticus) Fry by using Methyltestosterone (Mt) Treated Soybean Meal

Mina Mahatara*, Ram Bhajan Mandal, Jay Dev Bista and Sujan Mishra

Experiment was conducted at Centre for Aquaculture-Agriculture Research (CAAR) and Production Pvt. Ltd., Chitwan from August-3, 2021 to December-5, 2021. For the experiment, Completely Randomized Design (CRD) was used having 5 treatments and 3 replications. Methyl testosterone hormone stock solution and hormone treated feed was prepared. Hapa (1 m³) was set in the pond and 100 fry were stocked in each hapa. Fry are fed with the Methyltestosterone (MT) mixed feed 5 times daily. At final stage individual fish were dissected for sex identification. Economic analysis was carried by calculating B:C ratio of each treatment. It was found that percentage of male and female are same by providing soybean meal instead of fish meal. The higher B:C ratio (1.43 ± 0.03) of feed was recorded in treatment four i.e., 25% FM ± 75% SM. The lowest B:C (1.21 ± 0.04) ratio was recorded in treatment one i.e., 100% fish meal. This study results clearly demonstrate that 75% soybean meal can replace 100% fish meal in feed for sex reversal of Tilapia without decreasing the growth performance and survivability at low cost.

Published Date: 2023-08-26; Received Date: 2023-06-27