(Imu-Tek Animal Health) Use for newborn calves that do not nurse or that have restricted nursing. Fortified with probiotics, vitamins, and trace minerals. Immu-Start is designed to replace or supplement the colostrum milk received by newborn calves. Feed within 8 to 10 hours after birth. Also provides a beneficial microflora in the calf's digestive tract. Contains 50 gm IGG.