Key result
An intensive eradication program identifying and slaughtering persistently infected animals eliminated HoBi-like pestivirus from the herd, improving average daily milk production from 22.12 kg to 23.97 kg and reducing calf mortality from 6.76% to 2.37%.
Case Report (n=780)
No
An intensive eradication program based on detecting and slaughtering persistently infected animals improved productivity in a cattle herd affected by HoBi-like pestivirus.
May boost productivity in affected herds; hypothesis-generating for pestivirus eradication beyond this single case.
The clinical features and economic impact of the infection caused by an emerging group of pestiviruses, namely HoBi-like pestivirus, in a cattle herd of southern Italy are reported. In 2011, the virus was first associated with respiratory disease, causing an abortion storm after 1 year and apparently disappearing for the following 3 years after persistently infected calves were slaughtered. However, in 2014, reproductive failures and acute gastroenteritis were observed in the same herd, leading to a marked decrease of productivity. A HoBi-like strain closely related to that responsible for previous outbreaks was detected in several animals. Application of an intensive eradication programme, based on the detection and slaughtering of HoBi-like pestivirus persistently infected animals, resulted in a marked improvement of the productive performances.
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Decaro et al. (2016) conducted a case report in HoBi-like pestivirus infection (n=780). Eradication program (detection and slaughtering of persistently infected animals) vs. Pre-eradication (historical control) was evaluated on Herd productivity (milk production, calf mortality, repeat breeding). An intensive eradication program identifying and slaughtering persistently infected animals eliminated HoBi-like pestivirus from the herd, improving average daily milk production from 22.12 kg to 23.97 kg and reducing calf mortality from 6.76% to 2.37%.
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