Effective IBR prevention relies on early vaccination, good biosecurity and reducing stress in cattle to limit virus spread and protect herd performance.
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Included in the recently published AFBI disease surveillance report is the case of a farmer who submitted a bullock that died after a month of pneumonia symptoms.
It was one of eight cattle to die in a batch that were purchased six weeks earlier and treated on arrival with an intranasal IBR vaccine and lungworm treatment.
Postmortem examination found severe tracheitis and pneumonia. PCR testing confirmed IBR virus in the lung and trachea, and BVD virus in the blood. Serology indicated exposure to circulating IBR despite marker vaccination.
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The case is likely to have involved BVD-induced immunosuppression, leading to more severe IBR infection and pneumonia. It was one of five IBRV-positive carcasses detected this quarter.
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Included in the recently published AFBI disease surveillance report is the case of a farmer who submitted a bullock that died after a month of pneumonia symptoms.
It was one of eight cattle to die in a batch that were purchased six weeks earlier and treated on arrival with an intranasal IBR vaccine and lungworm treatment.
Postmortem examination found severe tracheitis and pneumonia. PCR testing confirmed IBR virus in the lung and trachea, and BVD virus in the blood. Serology indicated exposure to circulating IBR despite marker vaccination.
The case is likely to have involved BVD-induced immunosuppression, leading to more severe IBR infection and pneumonia. It was one of five IBRV-positive carcasses detected this quarter.
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