Drake, C.L.Smart, L.I.Smith, E.F.Lipper, R.I.2011-03-172011-03-172011-03-17http://hdl.handle.net/2097/8102This is a cooperative project with the Department of Agricultural Engineering to study surface runoff, in addition to animal performance. Twenty Hereford heifers were randomly allotted to four equal sized lots: 2 surfaced with concrete and 2 with soil. Self-feeders in soil-surfaced lots have concrete aprons.BeefGround beefConcrete vs. soil-surfaced lotsHigh energy rationConference paper