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Swine Nutrition and Feed Technology
Asian-Australasian Journal of Animal Sciences 1991;4(1): 21-24.
DOI: https://doi.org/10.5713/ajas.1991.21    Published online March 1, 1991.
Efficacy of feed additive sulfamonomethoxine and ormetoprim against chicken infectious coryza : a case study
Y. Nakai, K. Ogimoto, A. Kuwano, K. Nakamura, M. Kato
A mixed infection of Haemophilus paragallinarum (Hpg), Mycoplasma gallisepticum (MG) and M. synoviae (Ms) was detected in layers of a poultry farm in lwate prefecture in Japan by pathological, serological and bacteriological investigation. Hpg strains were isolated from three of five birds investigated and all strains were identified to be type C. The Hpg isolates were more susceptible in vitro to a combination of sulfamonomethoxine and ormetoprim (Ektecin) than each of sulfamethoxasol, sulfamonomethoxine, oxytetracycline, tetracycline, streptomycin, erythromycin and thianphinicol. After a total of six days` medication of 1% feed additive Ektecin, symptoms of infectious coryza of hens in the farm almost disappeared and no Hpg was detected even from birds showing nasal discharge.
Keywords: Chemotherapy; Haemophilus; Chicken; Infectious Coryza; Sulfamonomethoxine; Orme toprim

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