Abstract
Diarrhea represents the main challenge to maintain the survival of heifers in the neonatal period, since it is responsible for 57% of calves mortality in pre-weaning and, as a result, causes significant economic losses to milk and dairy farmers. In São Paulo state, the observed prevalence for diarrhea between D7 and D14 was around 85%. Risk factors associated with diarrhea are age, failur…