Two hundred and forty-three mixed breed
steers were allotted to four treatments with
two pastures per treatment. Treatments
consisted of a free-choice mineral supplement
alone or with Aureomycin® added to provide
150, 300, or 450 mg/hd/day. Gain was
similar for all four treatments. The percentage
of cattle with eye problems was
reduced in pastures where 150 and 450 mg of
Aureomycin were consumed daily; however,
the incidence in the 300 mg/hd/day group
was as high as in the control group.