Sole haemorrhages in dairy heifers managed under different underfoot and environmental conditions

affection podale alojamiento de animales animal housing animal husbandry methods bovin cattle control de enfermedades dairy cows disease control enfermedades de los pies feet floors foot diseases ganado bovino gestion heifers lameness laminitis lesiones lesions logement des animaux management movement disorders novilla pathogenese pathogenesis pied pies pisos plancher trouble locomoteur vacas lecheras