SHORT COMMUNICATION
Feeding frequency of fresh white clover (Trifolium
repens) and ammonia metabolism in the ovine liver
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1
Nutrition and Behaviour Platform, Palmerston North, New Zealand
2
Institute of Food, Nutrition and Human Health, Massey University,
Palmerston North, New Zealand
Publication date: 2004-08-30
Corresponding author
W. C. McNabb
Nutrition and Behaviour Platform, Palmerston North, New Zealand
J. Anim. Feed Sci. 2004;13(Suppl. 1):351-354
KEYWORDS
ABSTRACT
The splanchnic net fluxes of ammonia, urea and glutamine were measured during and after
feeding. Hepatic glutamine synthetase activity was also estimated. Ammonia load to and extraction
by the liver increased following feeding but returned to baseline within seven hours. During
feeding, hepatic glutamine production increased and was complemented by an increase in glutamine
extraction when the ammonia load had returned to baseline. Hepatic glutamine synthetase activity
followed an inverse trend.