A review on all male mono-sex GIFT seed production by using 17-α methyl testosterone hormone practiced in Bangladesh

Abstract

The present study was conducted for the review of present method practiced for all male mono-sex GIFT seed production by using 17-α methyl testosterone hormone in Bangladesh. In Bangladesh, all male mono-sex GIFT seed production by using 17-α methyl testosterone hormone is performed from the mid February to November, starting with egg collection. Smaller hatching trays or, jogs were used for the incubation of the collected eggs for 5 days which are eventually followed by incubation in the larger hatching trays for 36 to 48 hours until the yolk sac totally disappeared. The hormone mixed feed (contained 17-α Methyl testosterone (MT) hormone at the rate of 60-70 mg/Kg) was composed of 50% fishmeal, 30% wheat bran and 20% rice bran. The post larva were subjected to hormone mixed powdered feed for the first time after transferring them to transitory tanks and treated there for 5 days. Into the S.R.T. (Sex Reversal Treatment) ponds, further treatment was completed. There they fed frequently with hormone mixed feed for about 21 days and moved further.