Doenças Na Fase De Aleitamento E Práticas De Manejo Sanitário Na Criação De Bezerras

e challenges faced by dairy heifers from birth, such as adapting to the extrauterine environment and the need to obtain immunoglobulins via maternal colostrum, combined with an immune system still in development, make these animals more susceptible to diseases in the pre-weaning phase, such as neonatal asphyxia, diarrhea, navel ill and bronchopneumonia.e health management in the calf rearing system is based on the early detection of diseases, identification of the etiological agent and their respective transmission routes, for the establishment of specific therapeutic protocols and specific vaccination and biosecurity program.e economic impact of disease is modulated by a series of cascading events from birth, which results in high rates of morbidity and mortality, low performance, reproductive delay and less milk production.In this context, the aim of this paper is to present a systematic review on the etiology, physiopathology, detection, therapy and biosecurity practices applied to the main calves' diseases in the pre-weaning phase.