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Northern Ireland disease surveillance, April to June 2018
Infectious bovine rhinotracheitis in cattle
Jejunal haemorrhage syndrome in cattle
Bovine neonatal pancytopenia in calves
Listeriosis in sheep
Gastric ulceration in pigs
Trichomonosis in pigeons
Respiratory disease was identified in 56 cattle postmortem submissions between April and June 2018. The most common pathogens identified included Mycoplasma bovis (17 cases), Pasteurella multocida (14 cases), Mannheimia haemolytica (11 cases), Trueperella pyogenes (seven cases), respiratory syncytial virus (three cases) and Histophilus somni (two cases).
Infectious bovine rhinotracheitis (IBR) was diagnosed in a five-month-old calf. The trachea was lined with a thick yellow suppurative pseudomembrane and the nasal mucosal surfaces were similarly affected. There was severe bronchopneumonia with miliary suppurative foci in consolidated anteroventral lung lobes. IBR virus was detected by PCR in the lung and trachea and M bovis was also detected by PCR in pneumonic lung tissue. Histological lesions in lung tissue were also suggestive of pneumonia due to M bovis.
Bronchointerstitial pneumonia was diagnosed in a four-month-old calf. Histologically there was bronchocentric abscessation, bronchiectasis and heavy bronchiolar and alveolar inflammatory infiltrate. There were occasional alveolar epithelial syncytia. Bovine respiratory syncytial virus was detected by immunofluorescence and a mixed bacterial culture of T pyogenes and P multocida was recovered from pneumonic lung.
About this report
This summary has been compiled by the Veterinary Sciences Division of the Agri-Food and Biosciences Institute of Northern Ireland (AFBI), and is based on diagnostic submissions to the AFBI’s veterinary laboratories at Stormont, Belfast and Omagh, County Tyrone. The AFBI operates a farm animal disease surveillance service on behalf of the Department of Agriculture, Environment and Rural Affairs in Northern Ireland
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