The Feeding Stuffs Regulations (Northern Ireland) 1992

Regulation 2

SCHEDULE 9 Method of Calculating the Energy Value of Compound Feeds

The energy value of compound poultry, ruminant and pig feeds shall be calculated in accordance with the formulae set out below on the basis of the percentages of certain analytical components of the feed. 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 × % Crude 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 and Amylase 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 × % Crude Protein(1) + 0.158 × % Oil(2) -0.331 × % Ash(6) 0.140 Neutral Detergent plus Amylase Fibre(5).

N.B. Where the results of analysis are to be expressed 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 of the Sampling and Analysis Regulations. 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 of the Sampling and Analysis Regulations. N. B. It is recommended that the pre-extraction of oil prior to acid hydrolysis is always carried out on compound feed. In ruminant and pig feeds the result must be corrected to 100% dry matter.

(3)

Determined by method 30a (Polarimetric Method) of the methods of analysis specified in Schedule 2 of the Sampling and Analysis Regulations.

(4)

Determined by method 10a of the methods of analysis specified in Schedule 2 of the Sampling and Analysis Regulations.

(5)

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

(6)

Determined by method 12 of the methods of analysis specified in Schedule 2 of the Sampling and Analysis Regulations. N. B. The result must be corrected to 100% dry matter.