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OPA Scanning Course - 14 Nov 2019


Advanced Veterinary Clinical Training:  Ultrasound detection of OPA as part of the veterinary control plan on farm.

Thursday 14th November, 2019 - Moredun Research Institute, Edinburgh, EH26 0PZ

Maximum 15 participants.  Cost £275   CPD approx. 7hrs including 4hrs practical training.

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Please contact Chris Cousens for more information or to enrol for this course.     Phone: 0131 445 5111 ext 47424 mob: 07786 846 502


Ovine pulmonary adenocarcinoma (OPA), also known as Jaagsiekte, is a disease of great concern in the sheep industry causing heavy losses in some flocks.  OPA results from infection with the Jaagsiekte sheep retrovirus (JSRV) which is passed between sheep mainly by the respiratory route. The virus induces a lung tumour that is eventually fatal and by the time clinical signs are apparent the affected sheep may already have infected many others with the virus. Therefore there is a demand from farmers to identify OPA at pre-clinical stages. 

Trans-thoracic ultrasonography is currently the best method for detection of OPA lesions in live sheep before the development of clinical signs as no reliable diagnostic blood test is available for individual sheep.  As described in our paper, (Cousens & Scott, Veterinary Record, 2015), trans-thoracic ultrasonography can be applied to confirm a diagnosis of OPA, to screen bought-in sheep or to screen an affected flock in order to remove sheep with OPA at an early stage.  We now have several years of experience in whole flock scanning and will share what we have learned in this time.

The aim of this course is to provide advanced clinical training for veterinary practitioners wishing to offer transthoracic ultrasound as a method for screening for OPA.  This course will also be suitable for vets studying towards Advanced Practitioner status in Veterinary Diagnostic Imaging or Sheep Health and Production.

The main focus of the day will be to provide one-to-one practical training on scanning live sheep with or without OPA, following this up with necropsy of the sheep so that the association between the scan output and gross lesions can be confirmed.  This will follow presentations covering the most up-to-date knowledge on OPA and transthoracic ultrasound scanning. 

Our Aim

“To promote the prevention
of disease and the welfare of
sheep by providing a forum
for discussion, distribution of
research results and provision
of advice on veterinary
matters relating to sheep”

Contact the Society

Sheep Veterinary Society,
SVS Secretariat,
Moredun Research Institute,
Pentlands Science Park,
Bush Loan, Penicuik,
Midlothian, EH26 0PZ

Tel: +44 131 445 5111
Fax: +44 131 445 6235

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