[Decreasing of environment pollution in the broiler chicken house] | Vides piesārņojuma samazināšana broilercāļu mītnē

additif aux aliments des animaux aditivos de piensos alojamiento para aves animal nutrition azote biological production broiler chickens chemical composition composition chimique digestion environmental impact experimentation farmyard manure feed additives fosforo fumier harina de colza impact sur l'environnement impacto ambiental latvia letonia lettonie logement des volailles lutte antipollution nitrogen nitrogen metabolism nutrition animale phosphore phosphorus pollo de engorde pollution pollution control poulet de chair poultry housing production biologique rapeseed meal tourteau de colza