Effect of Temperature on the Clinical Pathogenesis of Edwardsiella ictaluri in Channel Catfish
IAAAM Archive
R. Francis-Floyd1; P. R. Waterstrat1; M. H. Beleau1; P. R. Bowser1; T. L. Wellborn2; J. R. MacMillan2; W. G. Huber1
1College of Veterinary Medicine; 2Mississippi Cooperative Extension Service, Mississippi State University, MS

Edwardsiella ictaluri is the etiologic agent of Enteric Septicemia of Catfish, an infectious disease of major economic significance to the commercial catfish industry in Mississippi Channel catfish fingerlings were challenged with 104, 105, and 106 bacteria (IP) and mortalities as well as clinical data were recorded for 10 days. Control fish were injected with sterile saline. Trials were run at 6 water temperatures, 17°, 21°, 23°, 25°, 28°, and 32°C. Disease and significant mortality occurred when water tempatures were between 22° and 28° C which correlates with field observations of natural infections. Cumulative mortality, calculated LD, and a brief clinical description of the disease will be presented with appropriate recommendations for management and prevention.

Speaker Information
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Ruth Francis-Floyd, DVM, MS, DACZM
Department of Large Animal Clinical Sciences
and
Department of Fisheries and Aquatic Sciences
University of Florida
Gainesville, FL, USA


MAIN : Session III : Effect of Temperature
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