Penicillin in Milk Replacements for Dairy Calves.

Abstract

Feeding Holstein bull calves milk replacements containing 0.5 g. of K penicillin or 0.1 g., 0.3 g., 0.9 g., or 2.7 g. of procaine penicillin per 100 lbs. of milk replacements fed resulted in mean decreases in growth rates.