A relationship between energy and calcium in the diets of laying hens

albumen d'oeuf analyse statistique besoin nutritionnel compound feeds consommation alimentaire (animaux) consumo de energia consumo de piensos coquille d'oeuf egg albumen egg shell energy consumption feed consumption gallina ponedora layer chickens necesidades de nutrientes nutritional requirements peso piensos compuestos poids poule pondeuse statistical analysis vitellus weight yema de huevo