[Prediction equations for the estimation of metabolizable energy content in feedstuffs of permanent grassland growth and whole maize plants]

ash content cellulase celulasa contenido de ceniza crude fat crude fibre crude protein energy value ensilado ensilage (produit) evaluation feed grasses fibra bruta fibre brute foin futtermittel gases gaz graisse brute grasa bruta hay heno in vitro experimentation proteina bruta silage teneur en cendres zea mays