Dritz, S.S.; Tokach, M.D.; Goodband, R.D.; Nelssen, J.L.; Owen, K.Q.
(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1993)
A total of 240 pigs (initially 11.6 lb and
19 d of age) was used to compare four
different feed-grade antibiotics or antibiotic combinations in phase I (d 0 to 14 postweaning) and phase II (d 14 to 28 postweaning) starter ...