Division BAT 4

United Kingdom

In order to reduce the total phosphorus excreted, while meeting the nutritional needs of the animals, BAT is to use a diet formulation and a nutritional strategy which includes one or a combination of the techniques given below.

	Technique^f1	Applicability
A description of the techniques is given in Section 4.10.2.
a	Multiphase feeding with a diet formulation adapted to the specific requirements of the production period.	Generally applicable.
b	Use of authorised feed additives which reduce the total phosphorus excreted (e.g. phytase).	Phytase may not be applicable in case of organic livestock production.
c	Use of highly digestible inorganic phosphates for the partial replacement of conventional sources of phosphorus in the feed.	Generally applicable within the constraints associated with the availability of highly digestible inorganic phosphates.

Table 1.2

BAT-associated total phosphorus excreted

Parameter	Animal category	BAT-associated total phosphorus excreted^f2 ^f3(kg P₂O₅ excreted/animal place/year)
The lower end of the range can be achieved by using a combination of techniques.
The BAT-associated total phosphorus excreted is not applicable to pullets or breeders, for all poultry species.
Total phosphorus excreted, expressed as P₂O₅.	Weaners	1,2-2,2
	Fattening pigs	3,5-5,4
	Sows (including piglets)	9,0-15,0
	Laying hens	0,10-0,45
	Broilers	0,05-0,25
	Turkeys	0,15-1,0

The associated monitoring is in BAT 24. The BAT-associated total phosphorus excreted levels may not be applicable to organic livestock production and to the rearing of poultry species not indicated above.

Annotations

Footnotes

f1: A description of the techniques is given in Section 4.10.2.
f2: The lower end of the range can be achieved by using a combination of techniques.
f3: The BAT-associated total phosphorus excreted is not applicable to pullets or breeders, for all poultry species.