Outbreaks of Salmonella paratyphi A in a commercial poultry farm in Ibadan, Nigeria

An outbreak of Salmonella paratyphi A in a commercial poultry farm in Ibadan is hereby reported. The clinical findings manifested by the birds were reduced appetite, increased water consumption and passed yellowish green stool. There was decreased egg production, prostration and death. Morbidity was 50% while mortality was 20% over a period of 3 weeks. Post mortem examination was conducted on dead birds. Liver was consistently congested and friable with whitish deposits and tiny necrotic foci, while the gall bladder was engorged consistently with bile. There was inflamed intestine mainly duodenal region. The isolate obtained from the liver was highly sensitive to gentamycin (10μg) and moderately sensitive to nitrofurantoin (300 µg), ofloxacin (30 µg), augumentin (30 µg), tetracyline (30 µg), ampicilin (25μg) and cotrimoxazole (25 µg) but was resistant to nalidixic acid (30 µg). Keywords : poultry, Salmonella paratyphi A, antibiotic sensitivity Tropical Veterinarian Vol. 23(2) 2005: 65-68