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LVSURSRVHG XQGHUWKHPDWKHPDWLFDODQGFRPSXWDWLRQDOIHDWXUHV 7KLVSDSHUGHDOVZLWKFKDUDFWHULVWLF VWXG\ RI(3'7 RYHUWKHH[LVWLQJDOJRULWKPV 7KHWDLOODUG EHQFKPDUN SUREOHPVDUH VROYHG IRUWKH JHQHUDO FRPSDULVRQ 7KLV DQDO\VLV KDYH EHHQ WDEXODWHG DQG JUDSKLFDOO\ UHSUHVHQWHG DORQJ ZLWK WKH FXPXODWLYH SHUIRUPDQFHRILW 7KHVROXWLRQRIWKLVZRUNKDYHVKRZQWKDW([SRQHQWLDO'LVWULEXWLRQ7HFKQLTXHKDVEHWWHU SHUIRUPDQFHLQ¿QGLQJDQRSWLPDOVHTXHQFHLQDSHUPXWDWLRQÀRZVKRS Tilapia is the leading farmed species in all over the world due to its taste and the consumer preference. One of the main constraints in Tilapia culture is its early maturation. The objectives of this study were to determine the effect of different doses of 17-D-methyltestosterone on the growth of Oreochromis niloticus. For this study, the experiment expanded over a period of 166 days in four earthen ponds. Fertilization RI DOO WKH SRQGV ZDV GRQH ZLWK FRZGXQJ DW WKH UDWH RI J 1 J ZHW ¿VK ERG\ ZHLJKW GDLO\ 7KH VXSSOHPHQWDU\IHHG
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ZDVJLYHQDWWKHUDWHRI ¿VKERG\ZHLJKWGDLO\ 2QHSRQGZDVGHVLJQDWHG as control pond in which Tilapia was added which was not sex reversed by 17-D-methyltestosterone. In the treated ponds, 17-D-methyltestosterone was applied at the rate of 50, 70, and 90 mg/kg feed. The net ¿VKSURGXFWLRQZDVFDOFXODWHGDV DQG NJ KD \HDUZLWK DQG mg 17-D-methyltestosterone/kg feed pond, respectively. The overall results indicated that the sex-reversed Oreochromis niloticusVKRZHGPDUNHGO\LQFUHDVHGJURZWKWKDQLQFRQWUROSRQGV +RZHYHU PD[LPXP¿VK growth and production were observed with 90 mg/kg 17-D-methyltestosterone while minimum decrease LQ¿VKSURGXFWLRQZDVUHFRUGHGZLWK PJ NJ -D-methyltestosterone. The Tilapia which was produced through sex reversal had a capability to grow more as compared to normal Tilapia.
