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| Pigeon Arthritis Caused by Salmonella Typhimurium - short communication - DVM Costin Stoica |
A racing pigeons breeder brought for laboratory 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
Typhimurium.
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
Typhimurium.
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.
Catalase positive.
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) while "ABIS 9 online" software result was
Salmonella spp. 94%.
The parasitological exam from feces was negative.
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.
Catalase positive.
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) while "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.
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.
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