Assertion: threonine | /r/HasProperty | supplemented at level
Facets:
Source sentences:
text: In the first, horses were studied while receiving a basal diet and a threonine excess diet (threonine was supplemented at a level equivalent to the estimate of the threonine requirement for mature horses in the NRC), and whole-body phenylalanine kinetics were assessed twice for each diet: once while the isotope was administered intravenously and a second time when the isotope was administered orally by being top-dressed on the feed.