Wayne, Ralph W.Wilcox, Clifford L.Mudge, J. WilliamErickson, Russel W.2019-07-292019-07-291964https://hdl.handle.net/11299/205010This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu.endairy herd improvement associationDHIAproduction milk cowsOther