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

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    S14ArtEzekielDistributionInthomDev.pdf (1.191Mb)
    Date
    2014-10
    Author
    Ezekiel, C.N.
    Atehnkeng, J.
    Odebode, A.C.
    Bandyopadhyay, Ranajit
    Type
    Journal Article
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    Abstract/Description
    The distribution and aflatoxigenicity of Aspergillus section Flavi isolates in 58 commercial poultry feed samplesobtained from 17 states in five agro-ecological zones (AEZs) in Nigeria were determined in order to assess thesafety of the feedswith 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 of1006 Aspergillus section Flavi isolates were obtained from 87.9% of the feed samples and identified as Aspergillusflavus, unnamed taxon SBG, Aspergillus parasiticus and Aspergillus tamarii. A. flavuswas themost prevalent (91.8%)of the isolates obtained from the feed in the AEZs while A. parasiticus had the lowest incidence (0.1%) and wasisolated only froma layer mash sample collected fromthe DS zone. About 29% of the Aspergillus isolates producedaflatoxins in maize grains at concentrations up to 440,500 ?g/kg B and 341,000 ?g/kg G aflatoxins. The incidenceof toxigenic isolates was highest (44.4%) in chick mash and lowest (19.9%) in grower mash. The population ofA. flavus in the feed had positive (r= 0.50) but non significant (p N 0.05) correlations with proportion of toxigenicisolates obtained fromthe feedwhile SBG had significant (p b 0.001) positive (r= 0.99)influence on AFB1 concentrationsin the feed. Poultry feed in Nigerian markets are therefore highly contaminated with aflatoxigenicAspergillus species and consequently, aflatoxins. This is a potential threat to the poultry industry and requires urgentintervention.
    https://dx.doi.org/10.1016/j.ijfoodmicro.2014.07.026
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/1041
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1016/j.ijfoodmicro.2014.07.026
    IITA Subjects
    Aflatoxin
    Agrovoc Terms
    Aflatoxins; Aspergillus; Feed Cereals; Poultry
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Journals
    International Journal of Food Microbiology
    Collections
    • Journal and Journal Articles4835
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