"NURTURE is our colostrum-rich formula for puppies and gestating and nursing bitches. This formula is based upon a careful chemical analysis of canine mother's milk. Nurture provides the correct amino acid profile, fat and alpha-linoleic acid levels, whey and casein levels, vitamins and minerals, growth and immune factors, and lactose levels. The effect of feeding this formula to both bitches and puppies is dramatic. Young puppies do not have the enzymes to efficiently break down meat based proteins. The milk based whey proteins in Nurture make raising puppies a real delight! Orphaned pups thrive on this formula alone! Nurture comes in three 10 pound vacuum sealed bags for complete freshness."