Commission Regulation (EC) No 429/2008 of 25 April 2008 on detailed rules for the implementation of Regulation (EC) No 1831/2003 of the European Parliament and of the Council as regards the preparation and the presentation of applications and the assessment and the authorisation of feed additives (Text with EEA relevance) (c. 429)

ANNEX IV U.K. Categories and definitions of target animals and indication of the minimum duration of efficacy studies

1. Table. Animal categories: Pigs U.K.

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

2. Table. Animal categories: Poultry U.K.

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)

3. Table. Animal categories: Bovines (domestic bovine animals including bubalus and bison species) U.K.

Category	Definition of the animal category	Approximate duration period (weight/age)			Minimum duration of long term studies for efficacy
		Period	Age	Weight
Calves for rearing	Calves which are reared for reproduction or for beef production	From birth	Up to 4 months	Up to 60-80 kg up to 145 kg)	56 days
Calves for fattening	Calves for veal production	From birth	Up to 6 months	Up to 180 kg (up to 250 kg)	Until slaughter but not less than 84 days
Cattle for fattening	Bovine animals that have completed the weaning period and are destined for meat production until day of transport to slaughterhouse	From full development of rumination	Up to 10-36 months	Up to 350-700 kg	168 days
Dairy cows for milk production	Female bovine animals that have produced at least one calf.				84 days (total lactation period shall be reported)
Cows for reproduction	Female bovine animals that have been inseminated/mated at least once	From first insemination to the end of second weaning period			Two cycles (if the reproduction parameters are requested)

4. Table. Animal categories: Sheep U.K.

Category	Definition of the animal category	Approximate duration period (weight/age)			Minimum duration of long term studies for efficacy
		Period	Age	Weight
Lambs for rearing	Lambs reared for future reproduction	From birth	Up to 3 months	15-20 kg	56 days
Lambs for fattening	Lambs that are reared for lamb meat production.	From birth	Up to 6 months (or older)	up to 55 kg	Until slaughter weight but not less than 56 days
Dairy sheep (for milk production)	Sheep that have produced at least one lamb				84 days (total lactation period shall be reported)
Ewes for reproduction	Female sheep that have been inseminated/mated at least once	From first insemination to the end of second weaning period			Two cycles (if the reproduction parameters are requested)

5. Table. Animal categories: Goats U.K.

Category	Definition of the animal category	Approximate duration period (weight/age)			Minimum duration of long term studies for efficacy
		Period	Age	Weight
Kids for rearing	Young goats reared for future reproduction	From birth	Up to 3 months	15-20 kg	At least 56
Kids for fattening	Young goats that are reared for goat meat production	From birth	Up to 6 months		At least 56 days
Dairy goats (for milk production)	Goats that have produced at least one kid				84 days (total lactation period shall be reported)
Goats for reproduction	Female goats that have been inseminated/mated at least once	From first insemination to the end of second weaning period			Two cycles (if the reproduction parameters are requested)

6. Table. Animal categories: Fish U.K.

Category	Definition of the animal category	Approximate duration period (weight/age)			Minimum duration of long term studies for efficacy
		Period	Age	Weight
Salmon and trout				200-300 g	90 days or until initial body weight is doubled.
Salmon and trout	Brood stock	As close to the spawning period as possible			90 days

7. Table. Animal categories: Rabbits U.K.

Category	Definition of the animal category	Approximate duration period (weight/age)			Minimum duration of long term studies for efficacy
		Period	Age	Weight
Rabbits suckling and weaned		Beginning one week after birth			56 days
Rabbits for fattening	Rabbits that are reared for meat production	After weaning period	Up to 8-11 weeks		42 days
Breeding does (for reproduction)	Does, that have been inseminated/mated at least once	From the insemination to the end of the second weaning period			Two cycles (if the reproduction parameters are requested).
Breeding does (in order to have benefits to young rabbits)	Does, that have been inseminated at least once	From first insemination			At least 2 weeks before parturition until the end of the weaning period (e.g. for micro-organism product)

8. Table. Animal Categories: horses U.K.

Category	Definition of the animal category	Approximate duration period (weight/age)			Minimum duration of long term studies for efficacy
		Period	Age	Weight
Horses	All categories				56 days