It is perfectly fine to drink colostrum, it just is not like milk. My people make a food from colostrum, adding a little sugar and a little salt, the put in the oven until it is coagulated. Its name is "Kalvdans", crudely translated it means calf dance.
Over a few days the colostrum gets diluted with and eventually replaced by ordinary milk, usually it is possible to get sale quality within three or four days.