排序方式: 共有3条查询结果,搜索用时 15 毫秒
1
1.
Abiodun A. Adesiyun Geoff T. Fosgate Anil Persad Mervyn Campbell Ravi Seebaransingh Alva Stewart-Johnson 《Tropical animal health and production》2010,42(8):1685-1694
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 × 107 to 1.7 × 1010 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. 相似文献
2.
Stewart-Johnson Alva Dziva Francis Abdela Woubit Rahaman Saed Adesiyun Abiodun 《Tropical animal health and production》2019,51(2):369-372
Tropical Animal Health and Production - Livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) is a cause of zoonotic infections in many countries. People with occupational... 相似文献
3.
Adesiyun AA Fosgate GT Seebaransingh R Brown G Stoute S Stewart-Johnson A 《Tropical animal health and production》2011,43(1):13-16
Brucellosis has been documented in domestic water buffalo (Bubalus bubalis) but published literature is limited despite the importance of this species in tropical agricultural systems. The objective
of this study was to compare the virulence of Brucella abortus isolates recovered from cattle and water buffalo. Nineteen strains of B. abortus from cattle and domestic water buffalo in Trinidad were intraperitoneally inoculated into BALB/c mice. Spleens were cultured
for B. abortus and histopathological severity scores were calculated based on lymphoid depletion, lymphoid necrosis, splenitis, and macrophage
accumulation. A general linear model approach was used to estimate the effect of isolate source (cattle versus water buffalo)
on virulence. Isolates of water buffalo origin were significantly less virulent in the mouse model based on recovered B. abortus from splenic tissues, spleen/weight ratio, and lymphoid necrosis but not overall histopathological severity scores. Further
investigation of isolates recovered from water buffalo might provide the key to the development of procedures for brucellosis
control in tropical environments. 相似文献
1