An experiment was conducted with 105 Landrace weaners of 42 days of age to investigate the effect of various antibiotics on scouring, daily intake, daily gain and feed/gain of the weaners, These pigs were randomly divided into three groups. Group 1 , 2 and 3 were fed feeds containing colistin sulfate ( 10 ppm ) and Zinc bacitracin ( 50 ppm ) , terramycin ( 5)ppm ), and Zinc bacitracin ( 5) ppm ) respectively.
During 42 to 80 days of age, the scouring morbidity was lower
(P<0.01) in group 1...