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PRRSV – Virusul sindromului reproducător și respirator porcin

Posted on by ionut

Boala provocată de acest virus se numește sindromul porcinului reproducător și respirator (PRRS) și, după cum indică numele său, provoacă boală reproductivă la scroafe și afecțiuni respiratorii la porcine.

Fermele infectate pot prezenta probleme la scroafe, porci în creștere sau la ambele. O varietate de factori, inclusiv genetica porcină, tulpina PRRSV, starea de sănătate a efectivului, vârsta animalelor afectate și stadiul sarcinii pot influența semnele clinice. În efectivele naive de reproducere, infecția PRRSV poate provoca anorexie, febră și avorturi. În plus, un curs endemic al bolii poate determina o creștere a numărului de mumii, purcei morți și purcei slab dezvoltați și o rată crescută de revenire la estrus. 

Scroafele nu prezintă adesea alte semne clinice, însă infecția cu tulpini mai virulente poate duce la decolorarea pielii (de exemplu, urechi și bot) febră și poate provoca moartea scroafelor. Simptomele respiratorii, predominant respirația muncită, se văd în principal la porcii care cresc. Acestea pot fi asociate cu anorexia, letargia, febra, conjunctivita, edemul pleoapelor, precum și decolorarea pielii (de exemplu, urechi și bot).Infecția cu PRRSV a plămânului conduce la un risc mai mare de infecții secundare. În cadrul stării de boală poate provoca o creștere a pierderilor și o creștere neuniformă. PRRSV este transmis prin contact direct cu porcii, materialul seminal, aerosolii, insectele și alte medicamente, precum și procedurile medicale (administrarea acului!). Infecția cu PRRSV a plămânului conduce la un risc mai mare de infecții secundare. În cadrul stării de boală poate provoca o creștere a pierderilor și o creștere neuniformă. PRRSV este transmis prin contact direct cu porcii, materialul seminal, aerosolii, insectele și alte medicamente, precum și procedurile medicale (administrarea acului!). Infecția cu PRRSV a plămânului conduce la un risc mai mare de infecții secundare. În cadrul stării de boală poate provoca o creștere a pierderilor și o creștere neuniformă. PRRSV este transmis prin contact direct cu porcii, materialul seminal, aerosolii, insectele și alte medicamente, precum și procedurile medicale (administrarea acului!).

Nu există o terapie vizată pentru PRRS. Vaccinarea profilactică este măsura preferată de a controla replicarea virusului și simptomele clinice în efectivele infectate. Cu toate acestea, pentru controlul PRRS de succes, biosecuritatea ar trebui verificată și îmbunătățită, dacă este necesar. Cheia este aceea de a preveni infecția, de a maximiza imunitatea și de a minimiza expunerea. O abordare sistematică (5 pas-proces) contribuie la integrarea tuturor aspectelor.

Lantul de prevenire

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