Distribution of aflatoxigenic Aspergillus section Flavi in commercial poultry feed in Nigeria
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...
| Main Authors: | , , , |
|---|---|
| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Elsevier
2014
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/75949 |
| _version_ | 1855535491176202240 |
|---|---|
| author | Ezekiel, C.N. Atehnkeng, J. Odebode, A.C. Bandyopadhyay, Ranajit |
| author_browse | Atehnkeng, J. Bandyopadhyay, Ranajit Ezekiel, C.N. Odebode, A.C. |
| author_facet | Ezekiel, C.N. Atehnkeng, J. Odebode, A.C. Bandyopadhyay, Ranajit |
| author_sort | Ezekiel, C.N. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| 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. |
| format | Journal Article |
| id | CGSpace75949 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace759492024-05-01T08:18:59Z Distribution of aflatoxigenic Aspergillus section Flavi in commercial poultry feed in Nigeria Ezekiel, C.N. Atehnkeng, J. Odebode, A.C. Bandyopadhyay, Ranajit aflatoxins aspergillus feed cereals poultry 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. 2014-10 2016-07-04T08:15:40Z 2016-07-04T08:15:40Z Journal Article https://hdl.handle.net/10568/75949 en Limited Access Elsevier Ezekiel, C.N., Atehnkeng, J., Odebode, A.C. & Bandyopadhyay, R. (2014). Distribution of aflatoxigenic Aspergillus section Flavi in commercial poultry feed in Nigeria. International Journal of Food Microbiology, 189, 18-25. |
| spellingShingle | aflatoxins aspergillus feed cereals poultry Ezekiel, C.N. Atehnkeng, J. Odebode, A.C. Bandyopadhyay, Ranajit Distribution of aflatoxigenic Aspergillus section Flavi in commercial poultry feed in Nigeria |
| title | Distribution of aflatoxigenic Aspergillus section Flavi in commercial poultry feed in Nigeria |
| title_full | Distribution of aflatoxigenic Aspergillus section Flavi in commercial poultry feed in Nigeria |
| title_fullStr | Distribution of aflatoxigenic Aspergillus section Flavi in commercial poultry feed in Nigeria |
| title_full_unstemmed | Distribution of aflatoxigenic Aspergillus section Flavi in commercial poultry feed in Nigeria |
| title_short | Distribution of aflatoxigenic Aspergillus section Flavi in commercial poultry feed in Nigeria |
| title_sort | distribution of aflatoxigenic aspergillus section flavi in commercial poultry feed in nigeria |
| topic | aflatoxins aspergillus feed cereals poultry |
| url | https://hdl.handle.net/10568/75949 |
| work_keys_str_mv | AT ezekielcn distributionofaflatoxigenicaspergillussectionflaviincommercialpoultryfeedinnigeria AT atehnkengj distributionofaflatoxigenicaspergillussectionflaviincommercialpoultryfeedinnigeria AT odebodeac distributionofaflatoxigenicaspergillussectionflaviincommercialpoultryfeedinnigeria AT bandyopadhyayranajit distributionofaflatoxigenicaspergillussectionflaviincommercialpoultryfeedinnigeria |