Résumé
Sex reversal is one of the techniques used to improve growth in fish and it is traditionally achieved using synthetic material such as hormones. However, the use of synthetic hormones is not common among fish breeders in North Moluccas. Other synthetic material such as honey, in fact, can be used to do so (Honey is an organic substance not synthetic). Honey is a natural substance that can be used to reverse the sex of fish as it contains potassium and chrysene that act as the natural aromatase inhibitors. In this research, four (4) treatments concentration of 0.0 (control) 1.0, 1.5, and 2.0 of honey in 2L of water were tested to determine its effects on sex ratios and growth of the Nile Tilapia, Oreochromis niloticus. The 7-day old larva was immersed in the solution for 2 hours. The research design used was the Completely Randomized Design (CRD). The data obtained was analysed using the variance analysis at the confidence level at 99 % and followed by a BNT test to see the effect among treatments on the tested parameters. The result showed that administration of honey resulted in a significantly (p>0.05) different percentage of male sex in comparison to the control while there was no significant difference among honey dosage. The highest number of males (86%), however, obtained in treatment of while in treatment B with the dosage of 1.5% males was 84%. In contrast, the lowest percentage was found in the treatment D with the dosage of 0% (control) that was 38%. The survival rates in the treatment given with the dosage of honey A (1.0%), B (1,5%), and C (2,0%) were significantly different from the treatment D without any dosages of honey (0%). The growth was not significantly different from others.
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