[Effect of environmentally sound feeds on production result and gastric ulcer in pigs]

aliment pour animaux alimentation animales de carne aptitude pour la viande barrows body weight cerdas cerdo castrado crude fibre damage desechos alimentarios estomac feeding feeds fibra bruta fibre brute food wastes gain de poids ganancia de peso household wastes meat animals meat performance meat production noruega norway nutritive value peso corporal piensos poids corporel production de viande raciones ration rations sows stomach stomach ulcer truie valeur nutritive valor nutritivo weight gain