Starter Grit 50-Pound Grit is an important addition to every age of a chicken’s and turkey’s diet, as it helps in the development of their gizzard. The gizzard helps with their digestion and helps to break down the nutrient from your feed of choice. Grit should be offered as free choice, especially if there is no access to small, sharp rocks. For chicks and young poults, it is suggested to sprinkle the grit over their feed starting at week 4 for 2-3 weeks. Offer this grit as free choice in a separate dish.