[Influence of straw bedding and additional feeding of roughage on the digestibility of the feed in growing pigs]

animal litter behaviour cama (animales) cerdo comportamiento comportement comportement alimentaire contenido de fibras crude fibre digestibilidad digestibility digestion feeding habits fibra bruta fibre brute fibre content foin gramineas graminee grasses hay heno paille paja porcin reglamentaciones regulations straw swine teneur en fibres