Western
Meeting of Poultry
Clinicians and Pathologists
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Clinicians and Pathologists
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Colibacillosis in Layers A. Singh Dhillon WSU Avian Health Laboratory
Abstract A severe septicemia of E. coli etiology was diagnosed in two houses containing 51,000 and 76,000 layers with mortality of 6.3 and 4 percent respectively. The removal of dead birds from their cages was mismanaged. The disease started in 22-week old pullets, and two weeks later was diagnosed in 82-week old birds in an adjoining house. A non-lactose fermenter E. coli was isolated. An outbreak of colibacillosis was diagnosed with7.8 percent mortality at another farm. Approximately, 47,000 110-week old hens and 10,000 40-week old pullets were housed in this building. Antibiotic treatment failed to control the mortality. Use of Chlorox containing 5.25% sodium hypochlorite (house hold bleach) at a dosage level of 16 ounces to a gallon of water and then mixing one ounce of this mixture to one gallon of drinking water with a final dilution of 1:1024 reduced the mortality at both farms in seven to 14 days of treatment. No decrease in water consumption was reported. Addition of chlorine in drinking water was effective in controlling disease spread. |
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