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OJVRTM
Online Journal of Veterinary Research©
Volume 24(8): 458-463, 2020. .
Aflatoxin B1 and M1 in animal feeds and milk.
Razzagh Mahmoudi*1
and Reza Norian2
1Department of Food Hygiene and Aquatics, Faculty of
Veterinary Medicine, University of Tabriz, Tabriz, 2Laboratory of Food Quality Control
and Hygiene, Veterinary Medicine
Office, Qazvin province, Iran
ABSTRACT
Mahmoudi R, Norian R., Aflatoxin B1
and M1 in animal feeds and milk, Onl J Vet Res., 24(8): 458-463, 2020. In
dairy cattle, aflatoxin M1 (AFM1) may occur in milk and dairy products from
ingestion of feed contaminated with aflatoxin B1 (AFB1). We collected 288 milk samples for AFM1 and AFB1 in feed determined by ELISA. We
detected AFM1 in 163 milk samples (56.59%) ranging between 0.013 and 0.226 ppb of which 113
(56.59%) were higher than maximum tolerable limit of 0.05 of The European union/Codex Alimentarius
Commission. In Summer milk, mean
AFM1 was 0.080 and Winter 0.183 ppb. In Winter feed
AFB1 was ~2.27ppb and Summer ~0.8ppb (P<0.05). Of
216 feed samples of corn silage, alfalfa hay and concentrate we found 178 (82.40%)
with ~1.55 ± 0.89ppb AFB1 (mostly in corn silage) with 36.51% (65/178) exceeding
WHO/FAO limits (0.5ppb) for dairy feed with lower levels in summer samples
which may account for lower AFM1 levels in milk collected during summer. Our
findings suggest that AFB1 in feed may affect AFM1 levels in milk. Management
of AFB1 levels in imported corn may protect against AFM1-induced health risks.
Key Words: Aflatoxins, milk, feed, dairy cattle.
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