... levels of serumpepsinogen in calves on organic farms usingdifferent methods of grazing management to control parasite infections. Well nourishedhosts can better withstand the effect of parasitesand ... transfer of colostral im-munoglobulins to calves. Proc. Xth Conf. of Am.Ass. of Bovine Pract. Pittsburgh, USA, 1994,500-504.Goodger WJ, Theodore EM: Calf management prac-tices and health management ... when they were first offered hay, 14 daysold (CR: 7-28) when they were offered concen-trates, and 60 days old (CR: 30-120) when theywere offered silage. Water was first offered tothe calves...