Effect of aflatoxicosis and different antimycotoxins on health and growth of Oreochromis niloticus [electronic resource].

Includes references.

A total number of 400 Oreochromis niloticus With an average body weight 18 ± 1.0g Were obtained from Abbassa Fish Hatchery ,The fish were used to determine the effect of mild and moderate aflatoxicosis with and without antimycotoxins (chemical as Bentonite and biological as dried bacillus subtlis fermentation extract) in diet on health and growth of O. niloticus. The results revealed that, the addition of 0 .5 mg Aflatoxin B1(AFB 1)in 1kg diet had no effect on health and growth of the fish but the histology revealed coagulative necrosis varied from scattered foci in low to large areas in liver and kidney which recovered with addition of either Bentonite or dried bacillus subtlis fermentation extract. Fish fed on diet with 2.0 mg AFB 1 show mortality, reduced growth performance, the fish did not respond to tested reflexes, reduce feed conversion ratio ,liver was dark red friable, gills and kidney were congested. The addition of chemical antimycotoxin (with 1%in diet) and biological antimycotoxin (0.05% in 1kg diet) improve the growth performance and ameliorate the adverse effect of AFB 1on health of tested O. niloticus.

Summary in Arabic.

1