HISTOLOGICAL ANOMALIES IN GONADS OF OREOCHROMIS NILOTICUS (CICHLIDAE) FEEDING ON ETHYNYLTESTOSTERONE AND ACTIVE YEAST. | ||||
| Egyptian Journal of Aquatic Biology and Fisheries | ||||
| Article 23, Volume 7, Issue 4, September 2003, Page 483-501 PDF (3.7 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejabf.2003.1804 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Samia MOHARRAM; EL-Said Ebiary | ||||
| National institute of Oceanography & Fisheries - Alexandria | ||||
| Abstract | ||||
| Male-population of Tilapia nilotica was produced with 17aethynyltestosterone at 60ug/g diet. Subsequently fry were fed 1.2,3,4 and 5 g/kg active yeast diet for 70 days. Fish fed on dietary yeast were significantly heavier than the control. The percentage of males was 62.1. Ovotestis condition was found. Histological anomalies of the gonads of both sexes have been observed.Sterilization of the testis was complete at all levels of yeast diet.Dietary treatment had a destructive effect on the histological appearance of gonadal development. | ||||
| Keywords | ||||
| histological anomalies; Gonads; ethynyltestosterone.active yeast | ||||
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