Comparative study on responses of cattle and water buffalo (Bubalus bubalis) to experimental inoculation of Brucella abortus biovar 1 by the intraconjunctival route--a preliminary report
Tropical animal health and production
; 42(8): 1685-1694, Dec. 2010. tab, graf
Article
em En
| MedCarib
| ID: med-17636
Biblioteca responsável:
TT5
ABSTRACT
The preliminary study was conducted to assess the virulence of a strain of Brucella abortus (1969D) and to compare the susceptibility of water buffalo and cattle calves to infection by the intraconjunctival route. Seven of each cattle and water buffalo (Bubalus bubalis) calves aged 3-6 months were inoculated intraconjunctivally with counts ranging from 1.5 10(7) to 1.7 10(10) colony forming units of B. abortus. Animals were monitored over an 8-week period for clinical manifestations and serological and hematological evidence of infection. At slaughter, eight lymph nodes from each animal were sampled for bacteriological and histopathological assessments. Lymph nodes from three water buffalo (43%) and five cattle (71%) yielded B. abortus (P=0.048). Parotid/prescapular lymph nodes were most sensitive in detecting B. abortus. Our data suggest that B. abortus strain 1969D may be used as challenge strain, and water buffalo appeared to have a lower susceptibility to B. abortus infection than cattle.
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Coleções:
01-internacional
Base de dados:
MedCarib
Assunto principal:
Trinidad e Tobago
/
Brucella abortus
/
Búfalos
/
Bovinos
Limite:
Animals
País/Região como assunto:
Caribe ingles
/
Trinidad y tobago
Idioma:
En
Revista:
Tropical animal health and production
Ano de publicação:
2010
Tipo de documento:
Article