Purina Flock Raiser Crumbles is a 20% protein nutrient rich ration that provides starting, growing and finishing nutrition for broilers/meat birds or a mixed flock of chickens, ducks and geese from hatch until laying age (18-20 weeks chickens, 20-24 weeks ducks; geese start laying the spring after they were hatched) and for turkeys from 8-10 weeks until laying age of 30-32 weeks.