| Category | Definition of the animal category | Approximate duration period (weight/age) | Minimum duration of long term efficacy studies |
|---|
| Period/age | Age | Weight |
|---|
| Piglets (suckling) | Young porcine animals getting milk from sows | From birth | Up to 21-42 days | Up to 6-11 kg | 14 days |
| Piglets (weaned) | Young porcine animals having completed the suckling period and being reared for reproduction or meat production | From 21-42 days | Up to 120 days | Up to 35 kg | 42 days |
| Piglets (suckling and weaned piglets) | Young porcine animal from birth being reared for reproduction or meat production purposes | From birth | Up to 120 days | Up to 35 kg | 58 days |
| Pigs for fattening | Porcine animals having completed the weaning period and intended for meat production until day of transport to slaughterhouse | From 60-120 days | Up to 120-250 days (or according to local custom) | 80-150 kg (or according to local custom) | Until slaughter weight, but not less than 70 days |
| Sows for reproduction | Female porcine animals having been inseminated/mated at least once | From first insemination | | | From insemination to the end of the second weaning period (two cycles) |
| Sows, in order to have benefit in piglets | Female porcine animals having been inseminated/mated at least once | | | | At least two weeks before the parturition until the end of weaning period |
