DTH: A new option for checking the compliance of the vaccination against PCV2
It is a test that allows the verification of the carrying out and/or the quality of the vaccination in cases such as the entrance of piglets for their fattening.
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Compare production data, calculate the number of sow, nursery, and finishing spaces, and visualize your tasks on the work schedule by type of BMS.
Tool that allows you to calculate the replacement rate in your farm
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Biocheck.UGent is an independent, risk-based, scientific scoring system for assessing the quality of your on-farm biosecurity.
Definition for the most commonly used pig terms
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It is a test that allows the verification of the carrying out and/or the quality of the vaccination in cases such as the entrance of piglets for their fattening.
After the clinical and serological evaluation it is decided to vaccinate against PRRSV, with which we achieve a gradual improvement in the health status on the farm. Some months later, a severe cough appears in the fattening pigs that later also appears in the nursery and in the sows.
The first cause of PCV vaccine failure is the purchase and use of generic vaccine of low quality and titre, but the exact cause of the failures can occur in various forms.
During 2012 PCV2 variants or mutants (mPCV2) appeared in the USA and were frequently associated with PCV-associated diseases. The possibility of lack of cross-protection of commercial vaccines against mPCV2 is now of major concern.
Reducing piglets mingling in farrowing and nursery facilities was found to delay the infectious process leading to a lower number of early infections. Clustering piglets by litter in small units after weaning also decreased significantly the probability of early infection.
Frequent deaths and cases of disease with typical “diamond-skin” lesions appeared in fattening pigs although they were vaccinated against Erysipelothrix rhusiopathiae.
What further increases profitability in pig production is not minimizing costs, but maximizing revenue.
PCV2 vaccination of the gilts prior to insemination with PCV2 spiked-semen showed a clear decrease of viral load in the gilts as well as a much lower viral excretion that were compatible with foetus protection.
Is the right strategy to get a farm stable, that is, control clinical signs reducing the economic impact of the disease; or should a farm adopt strategies to go “negative”? As for other questions in the epidemiological field, our answer is “it depends”.
The virus is highly resistant in the environment, showing also high resistance to chemical and thermal treatments.
How to administer drugs in order to optimize the speed of action, the efficiency and the financial cost.
Might be there is a little doubt nowadays on the beneficial clinical and economic effects of PCV2 vaccination in subclinical infections in piglets, but… which is the role that sows play in the whole picture?
Resolving the basis of viral and host variation will require identification and characterization of key B- and T-cell epitopes conserved among diverse PRRSV, and of the molecular and structural details of key effector antibodies, T-cell antigen receptors, and MHC molecules that mediate broad, cross-protective immunity.
Although a commensal, M. hyorhinis may cause serious systemic disease through mechanisms that are not fully understood.
The most effective way of avoiding the production losses associated with the PCV2 consists in avoiding the appearance of the viraemia by inducing a passive or an active immunity that minimizes the circulation of the virus in the farm.
In 1996, the NFMDTF drafted a national plan to address the 1995 FMD epidemic wherein 98,000 animals were reported to have been affected.