Expertiseportaal van de Hogeschool Gent


The role of roughage provision on the absorption and disposition of the mycotoxin deoxynivalenol and its acetylated derivatives in calves: from field observations to toxicokinetics.

Output: Bijdrage voor tijdschriftA1: Web of Science-artikel

  • Bonnie Valgaeren
  • Leonard Theron
  • Siska Croubels
  • Mathias Devreese
  • Siegrid De Baere
  • Els Van Pamel
  • Els Dhaeseleire
  • Marthe De Boevre
  • Sarah De Saeger
  • A Vidal
  • José Diana di Mavungu
  • Philipp Fruhmann
  • G Adam
  • Alfons Callebaut
  • C Bayrou
  • V Frisée
  • AS Rao
  • Arnaud Sartelet
  • Bart Pardon
  • Piet Deprez
  • Gunther Antonissen
Vertaalde titel van de bijdrageDe rol van het verstrekken van ruwvoer op de absorptie en beschikbaarheid van het mycotoxine deoxynivalenol en zijn geacetyleerde derivaten in kalveren: van veldobservaties tot toxicokinetische studie
A clinical case in Belgium demonstrated that feeding a feed concentrate containing considerable levels of deoxynivalenol (DON, 1.13 mg/kg feed) induced severe liver failure in 2- to 3-month-old beef calves. Symptoms disappeared by replacing the highly contaminated corn and by stimulating ruminal development via roughage administration. A multi-mycotoxin contamination was demonstrated in feed samples collected at 15 different veal farms in Belgium. DON was most prevalent, contaminating 80% of the roughage samples (mixed straw and maize silage; average concentration in positives: 637 ± 621 µg/kg, max. 1818 µg/kg), and all feed concentrate samples (411 ± 156 µg/kg, max. 693 µg/kg). In order to evaluate the impact of roughage provision and its associated ruminal development on the gastro-intestinal absorption and biodegradation of DON and its acetylated derivatives (3- and 15-ADON) in calves, a toxicokinetic study was performed with two ruminating and two non-ruminating male calves. Animals received in succession a bolus of DON (120 µg/kg bodyweight (BW)), 15-ADON (50 µg/kg BW), and 3-ADON (25 µg/kg) by intravenous (IV) injection or per os (PO) in a cross-over design. The absolute oral bioavailability of DON was much higher in non-ruminating calves (50.7 ± 33.0%) compared to ruminating calves (4.1 ± 4.5%). Immediately following exposure, 3- and 15-ADON were hydrolysed to DON in ruminating calves. DON and its acetylated metabolites were mainly metabolized to DON-3-glucuronide, however, also small amounts of DON-15-glucuronide were detected in urine. DON degradation to deepoxy-DON (DOM-1) was only observed to a relevant extent in ruminating calves. Consequently, toxicity of DON in calves is closely related to roughage provision and the associated stage of ruminal development.
Originele taalEngels
TijdschriftArchives of Toxicology
Pagina's (van-tot)293-310
StatusGepubliceerd - feb-2019

ID: 18900435