All laying flocks that adhere to the British Lion Code of Practice must be vaccinated against Salmonella Enteritidis and Salmonella Typhimurium during the rearing period.
Environmental sampling is carried out to monitor the flocks for Salmonella infection from 22-26 weeks of age and continuing every 15 weeks throughout the laying period.
Version 8 of the British Lion Code of Practice states that approved Salmonella testing laboratories must undertake testing to differentiate between field and vaccine strains of Salmonella.
The Cevac Salmovac vaccine strain can occasionally be detected during routine sampling.
When this happens, the accredited laboratory can carry out the differentiation testing whilst also sending the samples to the official confirmatory laboratory for final identification.
Ceva says ASAP significantly improves and speeds up the differentiation between vaccine and field strains, providing early reassurance to the producer that the official confirmation will identify the vaccine strain.
The ASAP Salmonella differentiation test has 100% sensitivity and 100% specificity for differentiating the Cevac Salmovac vaccine strain from any Salmonella field strain.
Pippa Abbey, poultry national veterinary services manager at Ceva Animal Health said: “Several tests are available to differentiate Cevac Salmovac from Salmonella field strains, however using ASAP as a second medium significantly improves and speeds up the differentiation process, ensuring that laboratories can quickly and efficiently detect the presence of the Cevac Salmovac strain.
“The ASAP media is also a useful tool for monitoring Cevac Salmovac drinking water vaccination and helps with vaccination auditing.”
Ceva also says that using ASAP media as a tool for monitoring the application of its vaccine can provide reassurance that it has been given successfully.
On the day of vaccination, following priming of the drinker lines, a water sample can be taken from the end of the line and sent to the laboratory for testing.
Cevac Salmovac will grow in dark blue/purple colonies indicating vaccine availability throughout the poultry house and a good vaccination process.
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