An investigation on the viability and performance of native poultry Villages of Mazandaran

animal production aves de corral biological properties body weight chickens egg production egg products eggs gallinas ganado health hens huevos iran islamic republic livestock mortalidad mortalite mortality oeuf ovoproduit peso peso corporal poids poids corporel pollo poulet poulette poultry processed animal products production animale production d'oeufs productos animales procesados productos derivados del huevo salud viabilidad viability volaille weight