Endotoxaemia in dairy cattle: mechanism of reticulorumen stasis. Academic Article uri icon

abstract

  • The objective of this study was to determine whether blockade of alpha(-2) adrenergic receptors would restore reticulorumen motility during toxaemia in cows. Reticulorumen contractions were measured via a water-filled balloon connected to a pressure transducer. Intravenous infusion of endotoxin (100 ng kg-1 over 30 min) significantly decreased the number of reticulorumen contractions. Intravenous infusion of yohimbine (125 micrograms kg-1 over 30 min) alone did not affect reticulorumen contractions. However, when yohimbine (125 micrograms kg-1 over 30 min) was infused concurrently with endotoxin (100 ng kg-1 over 30 min), the effects of endotoxin on reticulorumen contraction frequency decreased, suggesting that endotoxaemia causes reticulorumen stasis via a mechanism that involves alpha(-2) adrenergic receptors.

published proceedings

  • Vet J

author list (cited authors)

  • Eades, S. C.

citation count

  • 7

complete list of authors

  • Eades, SC

publication date

  • May 1997