What is the main difference between PetLac and KMR/Esbilac?

KMR, Esbilac, and PetLac (puppy & kitten) meet most of the nutritional needs of newborn puppies and kittens to 6 weeks of age and are formulated to resemble mother’s milk. The primary difference between PetLac and our other milk replacers is PetLac contains both plant and milk protein sources. If possible, we recommend that the newborn be allowed to nurse it’s mother for a minimum of 2 days in order to receive colostrum from the mother.