A risk assessment study of the occurrence and distribution of aflatoxigenic Aspergillus flavus and aflatoxin B1 in dairy cattle feeds in a central northern state, Nigeria

Toxicology Reports
G K OmeizaL Ngoma

Abstract

Nigeria, being a tropical nation, characterized by favorable climatic conditions, may display high chances of feed contaminations due to aflatoxigenic Aspergillus flavus with the consequences of health risks associated with the consumption of dairy products. A cross-sectional study was conducted to examine the risks of occurrence and distribution of aflatoxigenic Aspergillus flavus (A. flavus) and aflatoxin B1 (AFB1) contamination levels based on the European Union (EU) and United States Food and Drug Administration (USFDA) set limits. Feeds (n = 144) were collected from selected conventional and traditional dairy herds; prepared and analyzed using immuno-affinity column (IAC) and high performance liquid chromatography (HPLC) respectively. Forty eight (55.8%) isolates were identified as A. flavus of the isolated Aspergilli (n = 86). Of this proportion, 12 (25.0%) were aflatoxigenic strains. An outrageous number of the tested feeds (86.8%, n = 144) were positive for AFB1 contamination. Detectable AFB1 concentrations ranged between (0.5 and 24.8) μgKg-1 and were distributed variously according to many factors of distribution. Eighty three (66.4%, n = 125) of the AFB1 contaminated feed samples showed AFB1 concentrations between 5 ...Continue Reading

Citations

Feb 21, 2018·American Journal of Physical Anthropology·Kate McGrathShannon C McFarlin
Jul 28, 2019·Journal of Tissue Engineering and Regenerative Medicine·Maliheh JahromiAbbas Bakhtiari
Jul 28, 2020·Journal of Fungi·Kamel A Abd-ElsalamAlexander Yu Vasil'kov
Feb 9, 2021·Frontiers in Microbiology·Nancy NleyaMulunda Mwanza
Oct 27, 2020·Toxicology Reports·Nourin TarannumSahana Parveen
Mar 5, 2021·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Clarisse J de MatosHemerson I F Magalhães

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Methods Mentioned

BETA
PCR
electrophoresis
Fluorescence

Software Mentioned

Microsoft XP

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Aspergillosis is the name given to a wide variety of diseases caused by infection by fungi of the genus Aspergillus. Aspergillosis occurs in chronic or acute forms which are clinically very distinct. Most cases of acute aspergillosis occur in patients with severely compromised immune systems. Chronic colonization or infection can cause complications in people with underlying respiratory illnesses. Discover the latest research on aspergillosis here.

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