An overview of <i>Brucella ovis</i> infection in New Zealand

Ridler, Anne

doi:10.1080/00480169.2002.36280

Cited by 11 publications

(5 citation statements)

References 33 publications

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“…Producers may improve economic returns by testing their flocks and culling B. ovis-positive rams. 17,18 However, as our study has shown, a positive serologic test result does not indicate that a specific animal is infected, and not all infected rams will exhibit clinical signs of epididymitis. Thus, additional testing should be considered prior to culling a seropositive animal from the flock.…”

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confidence: 66%

Evaluation of serologic testing of rams in the management of Brucella ovis in a domestic sheep flock

2018

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Brucella ovis is a bacterial pathogen present in most major sheep-producing regions of the world. The pathogen is associated with ram infertility, decreased ewe conception rates, and premature lambs. Twenty ELISA seropositive or indeterminate rams were culled from a B. ovis-positive flock, and donated to the Wyoming State Veterinary Laboratory for evaluation of infection. Tissues from each ram were collected at autopsy for additional testing, including bacterial culture, PCR, and histopathology. Of 17 seropositive rams, 11 rams were also positive by culture and PCR, and had evidence of mild histologic lesions; 1 seropositive ram was positive by culture with mild histologic lesions, but negative by PCR. Five seropositive rams were negative by culture and PCR and had no histologic lesions. Three indeterminate rams were negative by culture and by PCR and had no histologic lesions. The tissues in which B. ovis was most often detected included the epididymis, vesicular gland, and ampulla. Although this was a small study, the observation that 5 of 17 (29%) rams that were initially seropositive had no evidence of infection is interesting. A convalescent test for valuable seropositive animals prior to culling may be useful, and reproductive tissues may be evaluated postmortem if confirmatory testing is desired.

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confidence: 66%

Evaluation of serologic testing of rams in the management of Brucella ovis in a domestic sheep flock

2018

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“…B. ovis infection was confirmed in different countries such as New Zealand [17], Romania [18], Croatia [19.20], Serbia [21], Brazil [22], Argentina [23], India [12,24], France [25] and Turkey [10], while some countries report never having recorded it as in Italy [26], Iran [27], and Canada [28]. In this study, the percentage of negative samples were higher than the positive samples, which can be attributed to either to trauma or to the presence of many species of bacteria causing epididymo-orchitis in ram [2,4].…”

Section: Discussionmentioning

confidence: 92%

First Serodiagnosis of Brucella ovis among rams with orchid-epididymitis in Mosul city, Iraq.

2019

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“…Em casos agudos, os testículos estão aumentados de tamanho, há edema inflamatório e presença de exsudado fibrinoso na região da túnica vaginal, hiperemia testicular e edema do epidídimo (ROBLES, 1998). Na fase crônica, são observadas regiões hipertrofiadas no testículo e endurecidas à palpação, deformações na cauda do epidídimo, espessamento da bolsa escrotal, fibrose, restringindo a mobilidade testicular, além de aderências fibrosas obstruindo a cavidade que separa as túnicas (RIDLER, 2002).…”

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Utilização de um antígeno comercial para o teste ELISA indireto na detecção de anticorpos contra a brucelose ovina

Greve¹,

Silva²,

Trindade³

et al. 2011

Rev. Acad. Cien. Anim.

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O estudo avaliou o antígeno comercial Reo 198, composto de fragmentos de lipo polissacarídeos da Brucella ovis com vistas ao diagnóstico de anticorpos contra a B. ovis utilizando o teste ELISA indireto. O antígeno foi diluído a 1:200 e submetido às amostras oriundas de animais com histórico e sem manifestação clínica da enfermidade. Noventa amostras foram empregadas, sendo 45 provenientes de animais com histórico de aborto e epididimite e 45 de animais sem histórico da doença. Após padronização e determinação do ponto de corte, 448 amostras de soro ovino com histórico clínico de outras enfermidades foram submetidas ao teste visando detectar possível reação ao teste. As mesmas 90 amostras foram submetidas à Imunodifusão emgel de agarose (IDGA). O estudo da sensibilidade e especificidade demonstrou um bom desempenho do teste com percentuais de 100% e 95,6%, respectivamente. Das 448 amostras submetidas ao ELISA padronizado, 11 foram reagentes ao teste, mas não reagentes ao IDGA.

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An overview of Brucella ovis infection in New Zealand

Cited by 11 publications

References 33 publications

Evaluation of serologic testing of rams in the management of Brucella ovis in a domestic sheep flock

Evaluation of serologic testing of rams in the management of Brucella ovis in a domestic sheep flock

First Serodiagnosis of Brucella ovis among rams with orchid-epididymitis in Mosul city, Iraq.

Utilização de um antígeno comercial para o teste ELISA indireto na detecção de anticorpos contra a brucelose ovina

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