Expert speakers at Advances in Diagnostics, a meeting held in Brussels last month, have said that molecular technology will play a vital role in safeguarding the health and productivity of food animals in the future.
Dr Willie Loeffen, President of the European Association of Veterinary Laboratory Diagnosticians (EAVLD) said: "Technology is taking over. Laboratory diagnosis used to be 99% labour and 1% technology, nowadays the emphasis is the other way around. Technology is now an integral and indispensable part of veterinary laboratories."
Dr Loeffen used the investigation of PRRSV infection in pigs and the more recent appearance of Schmallenberg virus in Europe to highlight how modern molecular techniques could help to characterise new disease threats rapidly.
"It took four years of laborious work for us to characterise the cause of PRRS, but thanks to sequencing technology Schmallenberg virus took just a few months.
"Technological developments mean that diagnosticians now do things that they could only dream about 10 or 20 years ago."
As well as providing a means of identifying new disease threats quickly, the meeting highlighted the increasing role of diagnostic tools as an integral part of maintaining animal health.
Dr Kirk Adams, Director of Product Management at Life Technologies, the meeting sponsor, said: "Diagnostics are no longer just a way of finding out what an animal died of - they have a multitude of uses on farm. They mean that we can take a more holistic and proactive approach to animal health; in contrast to the reactive, disease-driven approach of the past.
"As just one example, better diagnostics allow a more targeted approach to treatment, and the potential to reduce the use of broad-spectrum drugs - such as certain antibiotics - and thus comply with the wishes of consumers and legislators."
Dr Adams said that modern diagnostic tools also provided the means to improve vaccination programmes and biosecurity, and were essential for disease eradication schemes and for improving herd health status, for example by identifying persistently infected, asymptomatic animals.
They also enable veterinary surgeons to monitor herd health and build up an accurate and dynamic picture of health status and risk profile - and screen for emerging disease threats.
Dr Adams added: "Veterinarians now have access to a wider range of better diagnostics than ever before. Tests are now faster, more accurate and more precise than ever before.
"The next twenty years could see the biggest change in the way we manage production animals in over a hundred years."
The meeting was also addressed by Dr Kees van Maanen, from the Netherlands Animal health Service (GD), an expert in modern diagnostic technology and its application on both local and national levels. He called for greater international co-operation to protect European animals against threats from increasing global interaction. He said: "Pathogens and insects do not respect borders: trusting each other's results requires further harmonization and transparency for diagnostic procedures between laboratories and countries.
"Rapid and accurate diagnosis contributes to disease management, but does not stop epidemics. However, it has contributed significantly to gaining insight into the epidemiology of emerging diseases and formulating appropriate measures.
"The development of modern diagnostics has given us the potential to manage animal health and control infectious diseases in production animals far more effectively in the past - both on a local level and a national or regional level. Recent experience with unexpected disease outbreaks has shown that we can now characterise and track pathogens far more quickly and accurately than ever before.
"However, we need to make sure that we keep veterinarians and farmers informed about these developments, so they know how to apply them in practice in order to make the most of them.
"Diagnostics will continue to become a more integral part of animal health management in the next decade, we just need to make sure we can apply that knowledge in the best possible way."
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