Koch, B.A.; Smith, E.F.; Richardson, D.; Cox, R.F.
(Kansas Agricultural Experiment Station, 1960)
May 4, 1959 steers on the trace mineral study in Woodson County were randomly divided. A 12-mg. implant of diethylstilbestrol was placed in the left ear of each of six calves in either treatment group. All calves grazed ...