PCV2 – Circovirus de porc tip 2

PCV2 este un patogen omniprezent asociat cu o serie de boli. Este detectabil în aproape toate efectivele de porci din întreaga lume; cu toate acestea, o boală clinică nu este prezentă nici la fiecare efectiv infectat și nici la fiecare porc infectat. Cu toate acestea, performanța redusă este, de asemenea, o problemă în numeroasele efective subclinice infectate. Important este și impactul negativ asupra sistemului imunitar al porcului. Fostem cunoscut sub numele de PMWS (Sindromul Pierderii Multisistemice Post-Weaning), boala sistemică este văzută ca o întârziere a creșterii, paloare, hiperplazie (mai târziu hipoplazia) ganglionilor limfatici la animalul individual. Acesta poate fi însoțit de icter sau de alte simptome clinice ale sistemului respirator și enteroscopic. La nivel de efectiv se poate recunoaște o creștere a mortalității și a pierderilor de greutate, o creștere redusă a greutății și o creștere neuniformă. La scroafele, PCV2 poate fi asociat cu defecțiuni la reproducere, în special la scrofițe și la efectivele de pornire. Datorită varietății simptomelor asociate cu PCV2, boala este acum denumită în mod obișnuit PCVD sau PCVAD (Circovirus porcin (asociat). PCV2 se crede că provoacă Dermatita Porcină și Sindromul Nefropatiei.

Nu există o terapie vizată pentru PCVD. Vaccinarea este folosită pe scară largă pentru controlul bolii, ceea ce duce la creșterea creșterii în greutate, pierderi reduse și semne clinice, precum și la un număr redus de erupții și erupții. Mai mult, raportul de conversie a hranei poate fi îmbunătățit și utilizarea antibioticului este redusă. Impactul asupra performanței este de asemenea măsurat în efectivele infectate usoare sau subclinice.

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