Status and problems of monosex tilapia (Oreochromis niloticus) seed production using androgen hormone in Bangladesh
Journal Title: Sustainable Aquatic Research - Year 2022, Vol 1, Issue 2
Abstract
Nile tilapia (Oreochromis niloticus) has become a fast-growing aquaculture species in Bangladesh. This study investigated the status of existing practices for monosex tilapia production in aquaculture farms of Bangladesh. The data were collected using a structured questionnaire. The survey revealed that own hatchery origin brood fishes were used by 50%, 44% and 33% hatcheries in Mymensingh, Jessore and Cumilla, respectively. The weight ofnbroods ranged from 200 to 350 g. The majority of hatcheries of Mymensingh (50%) and Jessore (83%) maintained male: female ratio of 1:2, but 50% hatcheries in Cumilla maintained 1:1 ratio for breeding. Average dose of hormone (17α-methyltestosterone) for producing monosex (all male) tilapia seed was 77.50 mg/kg feed, 57.50 mg/kg feed, 51.00 mg/kg feed in Mymensingh, Jessore and Cumilla, respectively. The average sex reversal rate was the nhighest (92.5%) in Mymensingh followed by 89% in Jessore and 83% in Cumilla. The highest average survival rate of fry was found in Mymensingh (77%) followed by Jessore (75%) and Cumilla (63%). Monitoring of monosex tilapia production process using 17α-methyltestosterone is needed to help enhance the quality and maximize the production of tilapia monosex seed.
Authors and Affiliations
Bipresh Das, Shawon Chakraborty, Baadruzzoha Sarker, Mohammad Amzad Hossain, Mohammed Mahbub Iqbal, Sohel Mian, M. M. Mahbub Alam
Keywords
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