[Results of optimization study of variable feed rations for the Prusinky [Czech Republic] Station for fattening performance and slaughter value testing]

age groups beef cattle bovin de boucherie consommation alimentaire (animaux) consumo de piensos costos costs engorde engraissement ensilado ensilage (produit) fattening feed consumption ganado de carne grupos de edad mais maize peso poids raciones ration rations silage weight