Nutri-Vet Milk Replacement powder contains essential amounts of protein, fat and carbohydrates plus vitamins, minerals and amino acids that newborn puppies need. It can also be used as a nutritional supplement for pregnant and nursing dogs, convalescing or senior dogs. If possible, puppies should nurse from their mother for the first two days of their lives to receive nutrient rich colostrum. Mother's colostrum helps strengthen the immune system and contains growth factors to stimulate protein synthesis, fat utilization and cell growth.