Energy systems for pigs and poultry

As stated above, until recently, the energy system used for pigs in the UK was based on DE. However, after extensive consultation with the industry and other stakeholders, an NE system was introduced in 2003 (see Further reading). In this system, both energy requirements and the energy value of foods are expressed in terms of NE. As explained previously (see Chapter 10), the NE value of a food is 

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Energy systems for pigs and poultry are largely based on either DE or ME because the efficiency of DE utilisation (or ME) is relatively constant. However, with Increasing use 10. of fibrous by-products and more information on the efficiency of energy substrate utilisation, there is renewed interest in NE systems. 

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