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  • Title: Suppression of resistance to Salmonella typhimurium in young chickens inoculated with Corynebacterium parvum.
    Author: Corrier DE, Ziprin RL.
    Journal: Avian Dis; 1989; 33(4):787-91. PubMed ID: 2695051.
    Abstract:
    The effect of Corynebacterium parvum on resistance to Salmonella typhimurium infection was evaluated in young chickens. One-day-old chickens were inoculated subcutaneously (SC) or intraperitoneally (IP) with 1.4 mg killed C. parvum and challenged by IP injection with 5.0 X 10(7) S. typhimurium 4 days later. Spleen and bursa of Fabricius weights were not altered in the C. parvum-inoculated chickens. A transient increase in thymus weight occurred 3 days after inoculation with C. parvum. Phytohemagglutinin-elicited cutaneous hypersensitivity was significantly suppressed in the C. parvum-inoculated chickens. Morbidity due to Salmonella infection increased significantly from 15% and 21% in the control groups to 43% and 46% in the chickens inoculated IP or SC with C. parvum. The results indicated that inoculation of 1-day-old chickens with C. parvum suppressed cell-mediated immune responsiveness and decreased resistance to peritoneal infection with S. typhimurium.
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