Utilization of fibrous materials by the indigenous breed of pigs I. Effect of dietary fibre on performance and backfat thickness

aliment pour animaux backfat carcass composition cerdo composition de la carcasse crecimiento croissance feed intake feeds fibras fibre fibres gain de poids ganancia de peso growth ingredientes ingredients lard gras nutritive value piensos porcin prise alimentaire (animaux) swine tocino dorsal valeur nutritive valor nutritivo weight gain