Brazle, F.Whittier, J.2010-11-122010-11-122010-11-12http://hdl.handle.net/2097/6514Four hundred and ten cow-calf pairs were allotted to tall fescue pastures containing 40, 45, or 70% endophyte fungus infestation. One half of the calves in each pasture were implanted with Ralgro® initially and reimplanted about 110 days later. Calf gains on the 70% endophyte fungus pasture showed a greater (P<.05) response to implanting than those grazing the 40 and 45% endophyte-infested tall fescue pastures during the 165 day trial.BeefRalgo®PerformanceFescueEndophyteConference paper