The effect of concurrent or sequential Oesophagostomum dentatum and O. quadrispinulatum infections on the worm burdens of the two species in pigs

animal domestique biological competition cerdo digestive system diseases domestic animals dynamique des populations enfermedades del sistema digestivo experimental infection faeces feces ganado gastrointestinal diseases heces helminthe helminths helmintos in vivo experimentation infecciones por nematodos intestin intestines intestinos intraspecific competition large intestine livestock maladie de l'appareil digestif nematode infections oesophagostomum oesophagostomum dentatum ova ovule pathogenese pathogenesis population dynamics porcin swine