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EFFECTS OF DIFFERENT HORMONES ON SEX REVERSAL OF RAINBOW TROUT (ONCORHYNCHUS MYKISS WALBAUM) AND PRODUCTION OF ALL-FEMALE POPULATIONS

2009    Atar, H. H.; Bekcan, S.; Dogankaya, L.

The sex reversion technique in fish is widespread in many countries. The development of these techniques is desirable because rainbow trout males reach their gonad maturity earlier compared to the females. A feeding trial was conducted to examine the supplemental effects of three hormones-17 alpha-Methyltestosteron, 11 beta-hydroxyandrostenedione, 17 alpha-Ethynyltestosterone on sex reversal and growth performance of rainbow trout. Control groups were fed with commercial diets for rainbow trout without hormones. These sex reversed functional males were reared for brood stock until they attained sexual maturity. Thereafter, normal rainbow trout eggs were fertilized with the sperms taken from sex reversed males for producing all-female populations. Also sex reversal ratio and growth performance were determined in hormone-treated groups.