Verification of rape cakes containing the AMP-50 preparation in feed mixtures with lower content of nitrogen compounds in the fattening of broiler chickens

additif aux aliments des animaux aditivos de piensos amino acids broiler chickens carcass composition composition de la carcasse compound feeds consommation alimentaire (animaux) consumo de piensos engorde engraissement fattening feed additives feed consumption gain de poids ganancia de peso harina de colza mortalidad mortalite mortality nitrogen content peptide peptides piensos compuestos pollo de engorde poulet de chair rapeseed meal teneur en azote tourteau de colza weight gain