Biological activity of the coated free flowing vitamin D3 in laying hens

additif aux aliments des animaux alkaline phosphatase ash content blood plasma bones calcio calcium carence en vitamine contenido de ceniza deficiencia de vitaminas diet dieta feed additives feed conversion efficiency fosfatasa alcalina fosforo gain de poids gallina ponedora ganancia de peso huesos layer chickens mortalidad mortalite mortality os phosphatase alcaline phosphore phosphorus piensos medicinales plasma sanguin poule pondeuse raciones ration rations teneur en cendres vitamin d vitamin deficiencies vitamina d vitamine d weight gain