[Effect of the growth promoter rotation in swine feeding in the initiation and growth phases]

additif aux aliments des animaux aditivos de piensos animal growth promoters bacitracin bacitracina bacitracine cerdo cinc digestive disorders evaluation feed additives gain de poids ganancia de peso growth period olaquindox peru porcin promoteur de croissance animale promotores del crecimiento animal swine trastornos digestivos trouble digestif weight gain zinc