alexa The incidence and distribution of ochratoxin A in western Canadian swine.


Journal of Environmental & Analytical Toxicology

Author(s): Ominski KH, Frohlich AA, Marquardt RR, Crow GH, Abramson D

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Abstract A survey of swine destined for slaughter in Manitoba was conducted to examine the incidence of ochratoxin A (OA) in swine herds from different regions of Manitoba throughout the year 1989-90. Thirty-six percent of the serum samples which were collected from 1600 pigs contained detectable levels of OA. The identity of this toxin was confirmed using liquid chromatography-mass spectrometry and enzymatic hydrolysis. There was a significant effect of the region from which the herds originated, as well as the season in which the samples were collected on both the incidence (p < 0.001) and concentration of OA (p < 0.001). In July, 65\% of the samples contained detectable levels of OA, compared with 38, 21 and 17\%, in April, October and January respectively. Furthermore, 24\% of the samples collected in July contained greater than 15 ng/ml of OA, while only 2, 9, and 1\% of the samples collected in April, October and January respectively, contained greater than 15 ng/ml of OA. Based on the six samples collected from each herd, it appears that the presence and concentration of OA within a herd may be estimated from a limited number of animals per herd. This article was published in Food Addit Contam and referenced in Journal of Environmental & Analytical Toxicology

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