Use the oral dietary of 17-α methyl testosterone to produce the neomale sex population in fry mollies

Subject Areas : New Technologies in Aquaculture Development

Received: 2020-12-08 Accepted : 2020-12-08 Published : 2011-11-22

Keywords: Keywords: Fry molly, Monosex population, Oral dietary, Neomale production, 17-α methyl testosterone,

Abstract :

  This research was conducted to make oral type of 17-α methyl testosterone hormone produced fry mollies neomale sex population in three different doses of 17-α methyl testosterone hormone at four treatments and three repeats within 60 days in fall-winter 1388. At the end of the experiment, morphologic and histology of the fish were studied and Special Growth Rate (SGR) & Amount of Diurnal Growth (ADG) and Wasting percent, neomale production percent, Hermaphrodites percent, sterilization percent were studied to determine the best dose in commercial production, The results showed that having 200 mg hormone per every one kilo/g food which created 97.06% male fish in morphologic view and 90% of male fish in histology and 14.38% waste wth the maximum SGR & ADG is the most useful. (p < 0.05) Also using 300 m/g hormones of foods, despite creating a complete male population in morphology’s view and 90% of male population in histology’s searches, makes the highest waste