Haemophilus Infections in Chickens. IV. Results of Laboratory and Field Trials of Formalinized Bacterins for the Prevention of Disease Caused by Haemophilus gallinarum
1963; American Association of Avian Pathologists; Volume: 7; Issue: 3 Linguagem: Inglês
10.2307/1587837
ISSN1938-4351
AutoresL. A. Page, Andreas Rosenwald, F. C. Price,
Tópico(s)Animal Nutrition and Physiology
Resumofor the control of this disease have been: 1) chicken depopulation and restocking with day-old chicks; 2) sulfonamide or antibiotic prophylaxis and therapy (5,7,8,12) ; and 3) immunization with cultures of Haemophilus gallinarum (4,13), the subject of the present report. Chicken depopulation was effective because it removed persistent Haemophilus carriers from poultry farms with endemic coryza. Because H. gallinarum loses infectivity rapidly outside a host, susceptible chickens could, without danger of immediate reinfection, be placed into previously contaminated quarters within a few hours of removal of diseased birds. Today, however, this method is not economically feasible on farms with very large poultry populations of different ages and operating on a multiple brooding system. Moreover, replacement birds are still susceptible to infectious coryza from other sources. Sulfonamide and antibiotic treatment regimes have been
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