For calves are very important the first minutes of their lives. It is generally known that after birth are necessary make a number of postpartum works. All three periods of nutrition must properly link to each other and create a suitable transition from the milk form of plant nutrition to the plant nutrition necessary for the proper functioning of the ruminant’s digestive tract. In calf nutrition is important to apply probiotic products to suppress and inhibit pathogenic microorganisms, intensify intestinal microflora, improve feed conversion and ensure ideal digestion and absorption of nutrients from ingested feeds.