|Pigeon Arthritis Caused by Salmonella Typhimurium
- short communication -
DVM Costin Stoica
A racing pigeons breeder brought for lab analysis a
pigeon with wing arthritis and a collective faeces
sample from cohabiting birds without clincal signs.
Standard bacteriological exam was performed on
synovial fluid from swollen joint. The feces sample
was investigated for Salmonella detection by SR EN
ISO 6579 standard.
Salmonella spp. was isolated from both synovial
fluid and faeces. The two strains were
biochemically identical and show rapid agglutination
with somatic antigen B (factor 4). Strains were sent
for confirmation to Salmonella national reference
laboratory which identified them as Salmonella
Morphological and biochemical properties of the strains:
Gram-negative, motile rods.
After 24 h incubation at 37 ºC, colonies were circular, entire, 2-3 mm in diameter,
red-transparent with black-center on XLD Agar; nonhemolitic on 5% Sheep-Blood Agar.
TSI - glucose positive, lactose-sucrose negative, H2S production positive.
MIU - motility positive, indole production negative, urea hydrolysis negative.
Biochemical results on API 20 E strip:
Positive results for nitrate reduction, lysine decarboxylase (weak), ornithine decarboxylase,
H2S, acid production from: glucose, mannitol, sorbitol, rhamnose, melibiose & arabinose.
Negative results for ONPG, arginine dihydrolase, indole production, citrate utilization, urea
hydrolysis, Voges-Proskauer reaction, gelatin hydrolysis, tryptophane deamination, acid
production from: inositol, saccharose & amygdalin.
"APIWEB" identified strain as Salmonella spp. (unaccepted profile).
"ABIS 9 online" software result was Salmonella spp. 94%.
The parasitological exam from feces was negative.
|Wing arthritis in pigeon. Salmonelosis.
Antibiogram. The strain isolated from arthritis was sensible to Doxycycline, Lincomycin+Spectinomycin,
Sulphamethoxazole+Trimethoprim, Amoxicillin, Ampicillin, Enrofloxacin, Gentamicin, Florfenicol and resistant to
Penicillin and Erithromycin.
Salmonella Typhimurium isolation both from the arthritis-affected birds and faeces of apparently healthy pigeons
indicate a chronic infection in the flock and their carrier status. Antibiotic treatment for all birds was applied,
together with strong cleaning and decontamination measures.
(c) Costin Stoica