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Egyptian Journal of Aquatic Biology and Fisheries
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MOHARRAM, S., Ebiary, E. (2003). HISTOLOGICAL ANOMALIES IN GONADS OF OREOCHROMIS NILOTICUS (CICHLIDAE) FEEDING ON ETHYNYLTESTOSTERONE AND ACTIVE YEAST.. Egyptian Journal of Aquatic Biology and Fisheries, 7(4), 483-501. doi: 10.21608/ejabf.2003.1804
Samia MOHARRAM; EL-Said Ebiary. "HISTOLOGICAL ANOMALIES IN GONADS OF OREOCHROMIS NILOTICUS (CICHLIDAE) FEEDING ON ETHYNYLTESTOSTERONE AND ACTIVE YEAST.". Egyptian Journal of Aquatic Biology and Fisheries, 7, 4, 2003, 483-501. doi: 10.21608/ejabf.2003.1804
MOHARRAM, S., Ebiary, E. (2003). 'HISTOLOGICAL ANOMALIES IN GONADS OF OREOCHROMIS NILOTICUS (CICHLIDAE) FEEDING ON ETHYNYLTESTOSTERONE AND ACTIVE YEAST.', Egyptian Journal of Aquatic Biology and Fisheries, 7(4), pp. 483-501. doi: 10.21608/ejabf.2003.1804
MOHARRAM, S., Ebiary, E. HISTOLOGICAL ANOMALIES IN GONADS OF OREOCHROMIS NILOTICUS (CICHLIDAE) FEEDING ON ETHYNYLTESTOSTERONE AND ACTIVE YEAST.. Egyptian Journal of Aquatic Biology and Fisheries, 2003; 7(4): 483-501. doi: 10.21608/ejabf.2003.1804

HISTOLOGICAL ANOMALIES IN GONADS OF OREOCHROMIS NILOTICUS (CICHLIDAE) FEEDING ON ETHYNYLTESTOSTERONE AND ACTIVE YEAST.

Article 23, Volume 7, Issue 4, September 2003, Page 483-501  XML PDF (3.7 MB)
Document Type: Original Article
DOI: 10.21608/ejabf.2003.1804
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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
Main Subjects
Fisheries
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