2.Table. Animal categories: Poultry
| Category | Definition of the animal category | Approximate duration period (weight/age) | Minimum duration of long term studies for efficacy | ||
|---|---|---|---|---|---|
| Period | Age | Weight | |||
| Chickens for fattening | Birds raised for fattening | From hatching | Up to 35 days | Up to ~1 600 g(up to 2 kg) | 35 days |
| Chickens reared for laying | Female birds being reared for consumer egg production or for breeding purposes | From hatching | Up to ~16 weeks (up to 20 weeks) | — | 112 days (if the efficacy data are not available for chickens for fattening) |
| Laying hens | Productive female birds held for egg production purposes | From 16-21 weeks | Up to ~13 months (up to 18 months) | From 1 200 g (white) 1 400 g (brown) | 168 days |
| Turkeys for fattening | Birds raised for fattening | From hatching | Up to ~14 weeks (up to 20 weeks) Up to ~16 weeks (up to 24 weeks) | Hens: up to ~7 000 g (up to 10 000 g) Cocks: up to ~12 000 g (up to 20 000 g) | 84 days |
| Turkeys for breeding purposes | Female and male birds held for breeding purposes | Whole period | From 30 weeks up to ~ 60 weeks | Hens: from ~15 000 g Cocks: from ~30 000 g | At least six months |
| Turkeys reared for breeding | Young female and male birds reared for breeding purposes | From hatching | Up to 30 weeks | Hens: up to ~15 000 g Cocks: up to ~30 000 g | Whole period (if the efficacy data are not available for turkeys for fattening) |