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Distribution of aflatoxigenic Aspergillus section Flavi in commercial poultry feed in Nigeria

Authors: Ezekiel Chibundu , Joseph , Adegboyega Odebode, Ranajit Bandyopadhyay

Publication Type: Journal article

Journal: International Journal Of Food Microbiology

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Abstract

The distribution and aflatoxigenicity of Aspergillus section Flavi isolates in 58 commercial poultry feed samples obtained from 17 states in five agro-ecological zones (AEZs) in Nigeria were determined in order to assess the safety of the feeds with respect to aflatoxin-producing fungi. Correlation was also performed for incidence of species, aflatoxin-producing ability of isolates in vitro, and aflatoxin (AFB1) concentrations in the feed. A total of 1006 Aspergillus section Flavi isolates were obtained from 87.9% of the feed samples and identified as Aspergillus flavus, unnamed taxon SBG, Aspergillus parasiticus and Aspergillus tamarii. A. flavus was the most prevalent (91.8%) of the isolates obtained from the feed in the AEZs while A. parasiticus had the lowest incidence (0.1%) and was isolated only from a layer mash sample collected from the DS zone. About 29% of the Aspergillus isolates produced aflatoxins in maize grains at concentrations up to 440,500 ?g/kg B and 341,000 ?g/kg G aflatoxins. The incidence of toxigenic isolates was highest (44.4%) in chick mash and lowest (19.9%) in grower mash. The population of A. flavus in the feed had positive (r = 0.50) but non significant (p > 0.05) correlations with proportion of toxigenic isolates obtained from the feed while SBG had significant (p < 0.001) positive (r = 0.99) influence on AFB1 concentrations in the feed. Poultry feed in Nigerian markets are therefore highly contaminated with aflatoxigenic Aspergillus species and consequently, aflatoxins. This is a potential threat to the poultry industry and requires urgent intervention.

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Ezekiel,C. Joseph,A. Adegboyega,C.O Ranajit,B. . (2014). Distribution of aflatoxigenic Aspergillus section Flavi in commercial poultry feed in Nigeria, 189 (), 18-18.

Ezekiel,C. Joseph,A. Adegboyega,C.O Ranajit,B. . "Distribution of aflatoxigenic Aspergillus section Flavi in commercial poultry feed in Nigeria" 189, no (), (2014): 18-18.

Ezekiel,C. and Joseph,A. and Adegboyega,C.O and Ranajit,B. and . (2014). Distribution of aflatoxigenic Aspergillus section Flavi in commercial poultry feed in Nigeria, 189 (), pp18-18.

EzekielC, JosephA, AdegboyegaCO, RanajitB, . Distribution of aflatoxigenic Aspergillus section Flavi in commercial poultry feed in Nigeria. 2014, 189 ():18-18.

Ezekiel,Chibundu , Joseph,Atehnkeng , Adegboyega,C Odebode, and Ranajit,Bandyopadhyay . "Distribution of aflatoxigenic Aspergillus section Flavi in commercial poultry feed in Nigeria", 189 . (2014) : 18-18.

E.Chibundu J.Atehnkeng A.C Odebode & R.Bandyopadhyay , "Distribution of aflatoxigenic Aspergillus section Flavi in commercial poultry feed in Nigeria" vol.189, no., pp. 18-18, 2014.

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