Oxford Ag Colstrum 150 Replacer is used when it is unlikely that the calf will receive any colostrum for the dam in the first 24 hours or when calf is rejected or when calf is injured or the dam is sick or for lost calves. Oxford Ag Colstrum 150 replacer is made with whole bovine colostrum to provide your newborn calves with immunity they need for a strong healthy start. It is specially formulated to allow complete mixing without the whisk workout. Just fill the bag with warm water, shake it to dissolve the colostrum supplement and feed it. After calf has consumed the entire contents throw away the disposable bag. Includes a disposable esphageal feeding tube for easy administration.