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Dernière mise à jour : Mai 2018

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Metabolisable energy value of diets in laying hens

INRA Prod. Anim., 8 (3), 189-195.

M. LESSIRE¹, J.M. HALLOUIS¹, N. REVOL², F. RUDEAUX³

1 INRA Station de Recherches Avicoles 37380 Nouzilly

2 Ecole Supérieure d’Agriculture 55 rue Rabelais 49000 Angers
3 SANDERS Aliments 17 quai de l’Industrie 91200 Athis-Mons

Abstract 

Adult cockerels are classically used for metabolisable energy evaluation of poultry diets. The obtained data are retained by feed manufacturers in order to formulate diets for growing birds and laying hens. But it has been demonstrated that cockerel is not always the right model for young birds. In the present review we show that it may be the same for laying hens even if the results obtained are difficult to compare due to variations in the methodologies used for the ME determinations.

In the first trial we define the fasting and feeding periods of the bioassay in the second one we determined the effect of the age of the hen (from 16 to 70 weeks) on the ME value of an experimental diet and compared the obtained data to those determined on adult cockerels.

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