Wessels, R.H.; Titgemeyer, E.C.
(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1997)
Seven steers (513 lb) were used in an experiment
to investigate optimal levels and sources
of protein in diets limit-fed to allow gain of 2.2
lb/day. Treatments were: a negative-control
diet (urea; supplemented, 11.7% ...