Shelton, N.W.; Jacob, M.E.; Tokach, M.D.; Nelssen, J.L.; Goodband, R.D.; Dritz, S.S.; DeRouchey, J.M.; Amachawadi, R.G.; Shi, X.; Nagaraja, T.G.
(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2009)
A total of 180 weanling pigs (PIC TR4 ×1050, initially 11.1 lb and 21 d of age) were used in a 42-d growth trial to compare the effects of supplemental zinc, copper, and in-feed antimicrobial on weanling pig growth and ...