Feeding Stuffs Regulations (Northern Ireland) 1995

Schedule 1, paragraph 9 and 18(1)(e)

SCHEDULE 9 METHOD OF CALCULATING THE ENERGY VALUE OF COMPOUND FEEDS

The energy value of compound poultry, ruminant and pig feeds and feeding stuffs intended for particular nutritional purposes for cats and dogs shall be calculated in accordance with the formulae set out below on the basis of the percentages of certain analytical components of the feed or food. After application of these formulae, the results shall be given to one decimal place.

Poultry feeds: megajoules (MJ) of metabolisable energy (ME), nitrogen corrected, per kilogram of compound feed.

MJ of ME/kg of feed = 0.1551 × % protein(1) + 0.3431 × % oil(2) × 0.1669 × % starch(3) + 0.1301 × % total sugar (expressed as sucrose)(4).

Ruminant feeds: megajoules (MJ) of metabolisable energy (ME) per kilogram of dry matter in the compound feed.

MJ of ME/kg of dry matter = 0.14 × % Neutral detergent Cellulase plus Gamanase Digestibility(5) + 0.25 × % oil(2).

Pig feeds: megajoules (MJ) of digestible energy (DE) per kilogram of dry matter in the compound feed.

MJ of DE/kg of dry matter = 17.47 + 0.079 × % protein(1) + 0.158 × % oil(2) − 0.331 × % ash(6) − 0.140 Neutral Detergent plus Amylase Fibre(5).

Feeding stufls intended for particular rwtritional purposes for cats and dogs: megajoules (MJ) of metabolisable energy (ME) per kilogram of compound dog or cat food.

(a) cat and dog foods with the exception of cat foods having a moisture content exceeding 14%:

• MJ of ME/kg of food = 0.1464 × protein + 0.3556 × % oils and fats(2) + 0.1464 × % nitrogen-free extract;

(b) cat foods having a moisture content exceeding 14%:

• MJ of ME/kg of cat food = (0.1632 × % protein + 0.3222 × % oils and fats(7) + 0.1255 × % nitrogen-free extract) − 0.2092;

where in either case the percentage of nitrogen-free extract is calculated by subtracting from 100 the total of the percentages of moisture(8), ash(9), protein(10), oils and fats(7) and fibre(11).

N.B. Where the results of analysis are to be given on a dry matter basis, this may be achieved by analysing either the dried material, or fresh material and correcting for the moisture content.

(1)

Determined by method 4 of the methods of analysis specified in Schedule 2 to the Feeding Stuffs (Sampling and Analysis) Regulations (Northern Ireland) 1982 (S.R. 1982 No. 338, amended by S.R. 1984 No. 26. 1985 No. 194 and 1994 No. 309. The relevant amending Statutory Rule is S.R. 1994 No. 309) N.B. For pig feed the results must be corrected to 100% dry matter

(2)

Determined by Procedure B of method 3 of the methods of analysis specified in Schedule 2 to the Feeding Stuffs (Sampling and Analysis) Regulations (Northern Ireland) 1982. (The relevant amending Statutory Rule is S.R. 1985 No. 194) N.B. It is recommended that the pre-extraction of oil prior to acid hydrolysis is always carried out on compound feed or food. In ruminant and pig feeds the result must be corrected to 100% dry matter

(3)

Determined by method 3Oa (Polarimetric Method) of the methods of analysis specified in Schedule 2 to the Feeding Stuffs (Sampling and Analysis) Regulations (Northern Ireland) 1982

(4)

Determined by method 10a of the methods of analysis specified in Schedule 2 to the Feeding Stuffs (Sampling and Analysis) Regulations (Northern Ireland) 1982

(5)

Determined by the method detailed in “The Prediction of Energy Values of Compound Feeding Stuffs for Farm Animals” (published by the Ministry of Agriculture, Fisheries and Food)

(6)

Determined by method 12 of the methods of analysis specified in Schedule 2 to the Feeding Stuffs (Sampling and Analysis) Regulations (Northern Ireland) 1982

(7)

Determined by Procedure B of method 3 of the methods of analysis specified in Schedule 2 to the Feeding Stuffs (Sampling and Analysis) Regulations (Northern Ireland) 1982. (The relevant amending Statutory Rule is S.R. 1985 No. 194) N.B. It is recommended that the pre-extraction of oil prior to acid hydrolysis is always carried out on compound feed or food. In ruminant and pig feeds the result must be corrected to 100% dry matter.

(8)

Determined by method 2 of the methods of analysis specified in Schedule 2 to the Feeding Stuffs Sampling and Analysis) Regulations (Northern Ireland) 1982

(9)

Determined by method 12 of the methods of analysis specified in Schedule 2 to the Feeding Stuffs Sampling and Analysis) Regulations (Northern Ireland) 1982

(10)

Determined by method 4 of the methods of analysis specified in Schedule 2 to the Feeding Stuffs Sampling and Analysis) Regulations (Northern Ireland) 1982 (S.R. 1982 No. 338, amended by S.R.1984 No. 26, 1985 No. 194 and 1994 No. 309. The relevant amending Statutory Rule is S.R. 1994 No. 309) N.B. For pig feed the results must be corrected to 100% dry matter

(11)

Determined by method 9 of the methods of analysis specified in Schedule 2 to the Feeding Stuffs (Sampling and Analysis) Regulations (Northern Ireland) 1982. (The relevant amending Statutory Rule is S.R. 1994 No. 309).