Cage Culture Aquaculture Overview

MT treatments for hybrid tilapia fry ➤ In some hatchery, male hormone - MT feed (38-40% crude protein; 50 mg MT/kg feed) is used to treat tilapia fries to increase male percentage to 98-100%. The hybrid swimming-ups stocked at 4,000/m² outdoor cement tanks of 20-50 m² in surface area and 100-120 cm in water depth. ➤ DO is maintained > 2.5 mg/L through 24-hr aeration. Fries are fed MT-feed 4 times daily (07:00, 12:00, 18:00 and 22:00 h) at 10-15% body weight per day for 15-18 days. When reaching 2.5 cm long, fries are transferred to hapas suspended in ponds for nursing for 4-5 days before sale. Survival of the fries ranges normally from 90% to 95%.

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