Koch, B.A.Kropf, Donald H.Hines, Robert H.2010-05-072010-05-072010-05-07http://hdl.handle.net/2097/4065Swine Industry Day 1968 is known as Swine Day, 1968The need for zinc in swine rations has been firmly established. Likewise the inter-relationships between dietary zinc and other minerals, especially calcium, have been well authenticated. However, there are still many unanswered questions concerning zinc and its place in the swine diet.SwineRationsGrowing-finishing rationsProteinateConference paper