Hide damages and quality defects in cattle leather

agentes nocivos animal husbandry methods bovin calidad cattle cuero cueros y pieles cuir cuirs et peaux curtido damage enfermedades de la piel excrements excreta facteur nuisible farm equipment ganado bovino handling hides and skins injurious factors leather lesiones lesions light luz maladie de la peau mallophaga manutention noruega norway papilloma papillome papiloma parasite parasites quality skin diseases tannage tanning transport d'animaux transport of animals transporte de animales