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Communication Dans Un Congrès Année : 2018

The net contribution of ruminant production to the protein supply for humans

Résumé

Total protein conversion efficiency of ruminant production systems is low (between 0.05 for meat and 0.25 for milk), but this calculation usually does not differentiate human-edible from human non-edible feedstuffs (e.g. grass, by-products of food and biofuels industries). To evaluate the net contribution of ruminant livestock to protein production for human consumption in France we estimated the humanedible protein Fraction (hepF) of the diets and the net protein efficiency (human-edible protein efficiency) from six contrasting feeding systems in dairy, beef cattle and sheep systems. The hepF values of diets ranged from 3% (extensive sheep production) up to 26% (intensive dairy cattle production). The net protein efficiency ranged from 0.34 (intensive sheep production) up to 2.57 for grass-based dairy cattle production with low concentrate consumption. Each type of ruminant production can produce more edible protein than they consume (net protein efficiency > 1). The use of grass and by-products are the key factors to improve the net contribution of ruminant production to protein supply for humans.
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Dates et versions

hal-01827929 , version 1 (02-07-2018)

Identifiants

  • HAL Id : hal-01827929 , version 1
  • PRODINRA : 434634

Citer

S. Laisse, René Baumont, Patrick Veysset, Marc Benoit, Pauline Madrange, et al.. The net contribution of ruminant production to the protein supply for humans. 27. General meeting of the European Grassland Federation (EGF), Jun 2018, Cork, Ireland. ⟨hal-01827929⟩
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