https://www.purinamills.com/game-bird-feed/education/detail/feeding-game-birds-for-life
Six special rations for game birds
Purina® Game Bird Breeder Layena® (20% protein) product is formulated to support egg production, fertility, embryo development and chick vigor. Feed Game Bird Breeder Layena from one month prior to start of egg production until birds go out of production.
Purina® Game Bird Startena® (30% protein) product is formulated to promote rapid growth through bone and muscle development. Feed Game Bird Startena for the first 6 weeks of life.
Purina® Game Bird Flight Conditioner (19% protein) is formulated to stimulate growth and feathering with a minimal amount of body fat. Feed Flight Conditioner from 6 to 16 weeks to attain maximal feathering. Continue feeding Flight Conditioner until release to keep flying birds in top condition.
Purina® Game Bird Finisher (20% protein) is a meat-producing ration. Feed Game Bird Finisher from 6 to 14 weeks (6 to 16 weeks for quail). Birds should be slaughtered as soon as possible after 14 weeks to insure maximum return on investment.
Purina® Game Bird Maintenance Chow® (12.5% protein) product is a holding ration for game birds that have reached maturity. Maintenance Chow can be fed after 16 weeks of age or after the shooting season, whichever is desirable. This product is especially valuable for holding breeders over the winter.
Purina® Gamebird Pheasant Chow® product is available with or without Amprolium. Line up consists for five products each which include Starter, Finisher, Flight Conditioner, Maintainer, and the Breeder ration. Legally cleared for pheasants only to prevent coccidiosis in growing pheasants.