Detection of Aflatoxin in Poultry Feed and Feed Materials through Immuno Based Assay from Different Poultry Farms and Feed Factories in Bangladesh

Abstract

Aflatoxin Contamination of poultry feed and raw feed materials is a serious concern throughout the globe 1-3. Aflatoxins are a group of toxigenic secondary metabolites mainly secreted by some species of Aspergillus and other fungi 4.This dietary aflatoxins have 18 different analogues among which four are highly recognized, namely B1, B2, G1 and G2 (AFB1, AFB2, AFG1, AFG2 respectively). Analogue B1 and B2 are mainly produced by Aspergillus flavus while A. parasiticus can produce all four analogues 5. Aflatoxin can contaminate a wide variety of food and feed commodities including maize, wheat, cereal grains, peanut, cotton seed meal, oil seed meal, copra meal, sunflower meal, palm kernel meal, dried fruits, rice, spices and nuts 6. These Aspergilus spp. use the nutrients of food and feed for propagation and proliferation thus reducing nutritional value of the feeds 7.