Contrasting production traits of the pigs of the Duroc and Belgian Landrace breeds and populations produced by their crossing

animal fats breeds canal animal carcasse carcasses carne de cerdo cerdo consommation alimentaire (animaux) consumo de piensos digestibilidad digestibility engorde engraissement fattening feed consumption gain de poids ganancia de peso grasas animales hybrid vigour meat yield nutritive value performance testing porcin pork race razas rendement en viande selection sire evaluation slaughter weight swine valeur nutritive valor nutritivo viande de porc vigueur hybride weight gain