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IBC 2010, vol. 2, article no. 10, pp. 1-6 | doi: 10.4051/ibc.2010.2.4.0010
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Full Report (Environmental bioscience and technology/Bioenergy, Biological frontiers (General Biology), General)
Field Study on the Mycotoxin Binding Effects of Clay in Oreochromis niloticus Feeds and Their Impacts on the Performance as Well as the Health Status throughout the Culture Season
Mohamed Abdelaziz1,*, Wael Anwar2 and Abeer Hamada Abdelrazek2
1
Department of Fish Diseases and Management Faculty of Veterinary Medicine, Cairo University Giza 11221 Egypt
2
Department of Veterinary hygiene and management, Faculty of Veterinary Medicine, Cairo University, Giza 11221 Egypt.
*Corresponding author
received: October 22, 2010 ; accepted: October 26, 2010 ; published : November 12, 2010
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Synopsis

Total aflatoxin and ochratoxin were detected in 3 naturally contaminated fish feed samples using immune-affinity method. The results revealed that the average levels of aflatoxins in the 3 examined samples were (15, 22 and 12 µg/kg) respectively while the average levels of ochratoxins were (15, 6 and 6 µg/kg). The results of determination of the effects of clay as a mycotoxin binder on the health status and performance of Oreochromis niloticus in comparing with a control group revealed that the survival rate in control group was 81% after the end of the culture season. The results also revealed that the survival rate in group 2 which received clay treated feed was 86%. The results of regular parasitological examination revealed the identification of trichodina as external protozoa in Oreochromis niloticus from both ponds but without manifestation of disease signs. The results of bacteriological examination revealed the isolation and identification of Pseudomonas flouresence from some moribund Oreochromis niloticus. Higher performance parameters were recorded in group 2 that received feeds treated with clay which reflected in the total production which reaches 1646.47 kg while in the control pond, the total production was 1308.36 kg.

Keywords : mycotoxins, binding agents, clay, fish, Oreochromis niloticus, health status,
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- Mohamed Moustafa Mohamed
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