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“We know that vaccinating can decrease the amount of viruses in the air, so vaccination is a good mechanism to prevent airborne transmission” Swine veterinary consultant Dr. Carmen Alonso in Spain picks out lessons from her detailed studies of air samples inside and outside farms suffering an outbreak of PRRS, influenza A or porcine epidemic diarrhoea --- as well as poultry sites with highly pathogenic avian influenza.
Rutger Jansen
“Our recent work demonstrated the presence of the PCV-3 genome within mild-to moderate histological lesions of aborted fetuses.
In this video Dr. Mike Murtaugh discusses vaccine cross-protection on various PCV2 strains: PCV2a, PCV2b & PCV2d. He also talks about the outbreaks of PCVAD and how correct usage of the vaccine is key.
Prof Joaquim Segalés and Dr Oliver Duran Porcine circovirus type 2 (PCV2) was initially detected in the late 1990s in North America and Europe associated with a post weaning multisystemic wasting syndrome in pigs.
Greg Stevenson
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Phagocytes at work:
• A phagocyte attacks a bacterium and destroys it
• Important information required for the animal to express the appropriate immunological response is collected by the phagocyte
• The correct active immune response is induced
Phagocyte = a macrophage attacks bacteria
Viral protection of sows and their foetuses against PRR-virus, Circovirus and Parvovirus inside the uterus.
A single vaccination of gilts against PRRS is insufficient for optimal protection. When facing PRRS-outbreaks, a stable herd immunity can only be achieved by total herd vaccination. Well tolerated sow vaccines allow vaccination of gestating sows during every stage of pregnancy.
Behavioural studies show: Differences in suckling-activity of piglets and/or feed intake after vaccination can be explained largely by the tolerance or intolerance of piglets to the vaccines applied.
Inflammation of specific udder segments can occur at any stage during the lactation.
When milk-release is impaired by mastitis in one or more udder segments, there is the threat that FIL (a protein) will be released: when the concentration of this protein in the udder milk in creases, milk production is suppressed and eventually milk flow will stop.
In normally developing suckling pigs, although a piglet breathes from soon after birth, the lung’s tissue increases its size and function during the first 14 days of life. The oxygen transfer continually improves during this time.