Problems of the pork production (Review)

breeds calidad carcass composition carne de cerdo cerdo composition de la carcasse consommation alimentaire consumo de alimentos consumo familiar feed conversion efficiency feeding preferences food consumption gain de poids ganancia de peso household consumption industria de la carne industrie de la viande meat industry performance de reproduction porcin pork preferencias alimentarias quality race razas reproductive performance reproductividad slaughter weight swine valeur d'estimation valuation viande porcine weight gain