Artificial rearing is a common practice for rearing calves from the dairy herd, either for replacement heifers or for beef production. The period from birth to weaning is a critical period for the calf and nutrition is one of the components important to ensure successful rearing of calves. Improved nutrition that allows earlier weaning through a rapid calf growth has the potential to decrease costs. Moreover, it has been shown that healthy, vigorous and well-grown weanling heifers may enter the milking herd sooner (Davis and Drackley, 1998). The objective of this study was to examine the effect of feeding two concentrations of a high protein milk replacer on the health and growth performance of dairy calves until weaning.