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Poultry Science, Vol 83, Issue 12, 1964-1972
Copyright © 2004 by Poultry Science Association

Articles

Effects of deoxynivalenol on general performance and electrophysiological properties of intestinal mucosa of broiler chickens

WA Awad, J Bohm, E Razzazi-Fazeli, HW Hulan, and J Zentek

Institute of Nutrition, Department of Veterinary Public Health and Food Science, University of Veterinary Medicine, Veterinarplatz 1, A-1210 Vienna, Austria.

A feeding trial was conducted to evaluate the effects of diets contaminated with deoxynivalenol (DON on the performance of broilers and on the electro-physiological parameters of the gut. The control group was fed the starter and finisher diets without addition of DON. Another group of broilers was fed the starter and finisher diets with 10 mg/kg DON, whereas another group was fed the DON-contaminated diets supplemented with a microbial feed additive (Eubacterium sp.). The diets were provided ad libitum for 6 wk. DON had no effect (P > 0.05) on feed consumption, feed conversion, or body weight. The effect of DON on the electrophysiological parameters of the jejunum was studied in vitro using isolated gut mucosa in Ussing chambers. At the end of the feeding period, 7 birds from each group were killed, and the basal and glucose stimulated transmural potential difference (PD), short-circuit current (Isc), and electrical resistance (R) were measured in the isolated gut mucosa to characterize the electrical properties of the gut. The transmural PD did not differ (P > 0.05) among groups. The tissue resistance was greater (P < 0.05) in birds receiving DON and the microbial feed additive than in the controls and DON group. Addition of D-glucose on the luminal side of the isolated mucosa increased (P < 0.05) Isc in the control and DON-probiotic (Eubacterium sp.; PB) groups, whereas it decreased (P < 0.05) in the DON group indicating that the glucose-induced Isc was altered by DON. Addition of the eubacteria to the DON contaminated feed of the broilers led to electrophysiological properties in the gut that were comparable with those of the control group. It could be concluded that 10 mg/kg DON in the diet impaired the Na(+)-D-glucose cotransport in the jejunum of broilers. In the absence of clinical signs, and without impaired performance, DON appeared to alter the gut function of broilers. The addition of Eubacterium sp. may be useful in counteracting the toxic effects of DON on intestinal glucose transport.


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C. K. Girish and T. K. Smith
Effects of Feeding Blends of Grains Naturally Contaminated with Fusarium Mycotoxins on Small Intestinal Morphology of Turkeys
Poult. Sci., June 1, 2008; 87(6): 1075 - 1082.
[Abstract] [Full Text] [PDF]

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W. A. Awad, J. R. Aschenbach, F. M. C. S. Setyabudi, E. Razzazi-Fazeli, J. Bohm, and J. Zentek
In Vitro Effects of Deoxynivalenol on Small Intestinal D-Glucose Uptake and Absorption of Deoxynivalenol Across the Isolated Jejunal Epithelium of Laying Hens
Poult. Sci., January 1, 2007; 86(1): 15 - 20.
[Abstract] [Full Text] [PDF]


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