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Toxins 2014, 6(11), 3117-3128;

Measurement of Sterigmatocystin Concentrations in Urine for Monitoring the Contamination of Cattle Feed

United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi 753-8515, Japan
Shepherd Central Livestock Clinic, Kagoshima 899-1611, Japan
Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
Faculty of Fisheries, Kagoshima University, Kagoshima 890-0056, Japan
Faculty of Agriculture, Kagoshima University, Kagoshima 890-0056, Japan
Soo Agriculture Mutual Aid Association, Kagoshima 899-8212, Japan
Faculty of Veterinary Medicine, Utrecht University, Yalelaan 104, The Netherlands
Author to whom correspondence should be addressed.
Received: 9 September 2014 / Revised: 22 September 2014 / Accepted: 29 October 2014 / Published: 4 November 2014
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This study aimed (1) at determining the levels of the fungal toxin sterigmatocystin (STC) in the feed and urine of cattle and (2) at evaluating the effects of supplementing the feed with a mycotoxin adsorbent (MA) on STC concentrations in urine. Two herds of female Japanese Black cattle were used in this study. The cattle in each herd were fed a standard ration containing rice straw from different sources and a standard concentrate; two groups of cattle from each herd (n = six per group) received the commercial MA, mixed with the concentrate or given as top-dressing, whereas a third group received no supplement and served as control. Urine and feed samples were collected at various time points throughout the experiment. STC concentrations were measured using liquid chromatography-tandem mass spectrometry (LC-TMS). STC concentrations in straw were higher in Herd 1 (range 0.15–0.24 mg/kg DM) than in Herd 2 (range <0.01–0.06 mg/kg DM). In Herd 1, STC concentrations in urine significantly declined 2 weeks after replacing the contaminated feed, whereas MA supplementation had no effect. In conclusion, mycotoxins in urine samples are useful biological markers for monitoring the systemic exposure of cattle to multiple mycotoxins, as well as evaluating the effectiveness of interventions. View Full-Text
Keywords: cattle; sterigmatocystin; urine; LC-MS/MS cattle; sterigmatocystin; urine; LC-MS/MS

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Fushimi, Y.; Takagi, M.; Uno, S.; Kokushi, E.; Nakamura, M.; Hasunuma, H.; Shinya, U.; Deguchi, E.; Fink-Gremmels, J. Measurement of Sterigmatocystin Concentrations in Urine for Monitoring the Contamination of Cattle Feed. Toxins 2014, 6, 3117-3128.

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