{"id":8591,"date":"2023-05-30T08:00:34","date_gmt":"2023-05-30T08:00:34","guid":{"rendered":"https:\/\/aboutsmallruminants.com\/what-pathogen-is-the-main-cause-of-abortions-in-canada\/"},"modified":"2023-05-30T07:49:49","modified_gmt":"2023-05-30T07:49:49","slug":"aborti-canada-chlamydia-abortus","status":"publish","type":"post","link":"https:\/\/aboutsmallruminants.com\/it\/aborti-canada-chlamydia-abortus\/","title":{"rendered":"Qual \u00e8 il principale agente patogeno responsabile di aborti in Canada?"},"content":{"rendered":"
Secondo numerosi studi, Chlamydia abortus<\/em> \u00e8 uno dei principali agenti patogeni al mondo in grado di causare aborti negli ovini e nei caprini. Ciononostante, l’assenza di dati a livello locale \u00e8 molto frequente. In questo articolo, ci occuperemo in modo dettagliato della prevalenza di C. abortus<\/em> in Canada basandoci sui risultati di due studi. Quale sar\u00e0 l’importanza reale di tale agente patogeno?<\/div>\n

<\/h2>\n

Studio condotto in Quebec<\/h2>\n

Tra il 2017 e il 2019, il Ministero dell’Agricoltura, della Pesca e dell’Alimentazione del Quebec<\/strong> ha realizzato la prima campagna \u201cPISAQ<\/a>\u201d, il cui obiettivo era sensibilizzare<\/strong> al problema degli aborti<\/strong><\/a> nei piccoli ruminanti e ottenere campioni per un successivo studio epidemiologico<\/strong><\/a>.<\/p>\n

Sono stati coinvolti 300 allevamenti di ovini e caprini<\/strong> con problemi riproduttivi, ed \u00e8 stato possibile analizzare in laboratorio circa 100 episodi<\/strong> di aborti verificatisi in 88 di essi.<\/p>\n

\"campioni
Fig. 1. Risultati dei campioni inviati, prelevati da caprini e ovini. Fonte: Campagne N\u00ba1 du PISAQ, Programme integr\u00e9 de sant\u00e9 animale du Qu\u00e9b\u00e9c, 2019.<\/figcaption><\/figure>\n

Grazie a questa campagna \u00e8 stato possibile identificare i principali agenti patogeni<\/strong> responsabili di aborti in Quebec e, di conseguenza, istituire le misure migliori<\/strong><\/a> per controllarli.<\/p>\n

Chlamydia abortus \u00e8 stato identificato nel 18% dei campioni, ed \u00e8 risultato l’agente patogeno con la maggior prevalenza<\/p><\/blockquote>\n

Identificazione di C. abortus<\/em> mediante PCR<\/h2>\n

Anche un altro studio<\/a>, condotto presso la University of Guelph (Ontario, Canada) e pubblicato sul Journal of Veterinary Diagnostic Investigation, ha dimostrato l’importanza di Chlamydia abortus<\/em><\/strong><\/a> in Canada.<\/p>\n

Nell’ambito di questo studio, condotto tra il 2009 e il 2011, sono stati analizzati 163 campioni di ovini e 96 campioni di caprini. Si trattava di placente e feti<\/strong> prelevati dopo un aborto, su cui \u00e8 stato eseguito un esame macroscopico<\/strong> e, successivamente, una PCR.<\/strong><\/p>\n

Risultati della PCR<\/strong>:<\/p>\n

– Ovini<\/strong>: 42 campioni positivi su 162<\/p>\n

– Caprini<\/strong>: 54 campioni positivi su 92<\/p>\n

Il 26% dei campioni ovini e il 59% dei campioni caprini erano positivi a C. abortus.<\/p><\/blockquote>\n

Sulla base dell’anamnesi del caso e degli ulteriori test eseguiti (istologici, immunoistochimici e batteriologici), si \u00e8 concluso che C. abortus<\/em> era la causa di aborto rispettivamente nel 38% e nel 63% dei casi<\/strong> di ovini e caprini che alla PCR erano risultati positivi.<\/p>\n

I risultati dimostrano che C. abortus \u00e8 il patogeno con la maggior prevalenza e la principale causa di aborti negli ovini e nei caprini.<\/p><\/blockquote>\n

Conclusioni<\/h2>\n

Secondo i risultati di questi studi, \u00e8 possibile affermare che Chlamydia abortus<\/em><\/strong> costituisce un problema significativo in Canada. \u00c8 pertanto necessario adottare misure volte a controllare <\/strong>la malattia, come buone prassi di gestione e biosicurezza<\/strong> e la vaccinazione<\/strong><\/a>.<\/p>\n

\u00c8 necessario continuare a condurre indagini sulla prevalenza di C. abortus al fine di sviluppare strategie di prevenzione e controllo efficaci.<\/p><\/blockquote>\n

 <\/p>\n

 <\/p>\n

Autrice dell’articolo:<\/strong><\/p>\n

Tania Peralvarez Puerta. Global Product Manager, Small Ruminants Franchise \u2013 HIPRA<\/p>\n","protected":false},"excerpt":{"rendered":"

Secondo i risultati di questi studi, \u00e8 possibile affermare che Chlamydia abortus costituisce un problema significativo in Canada. \u00c8 pertanto necessario adottare misure volte a controllare la malattia, come buone prassi di gestione e biosicurezza e la vaccinazione.<\/p>\n","protected":false},"author":11,"featured_media":8627,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37],"tags":[],"class_list":["post-8591","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-riproduttivo"],"yoast_head":"\nStudi di prevalenza su Chlamydia abortus in Canada<\/title>\n<meta name=\"description\" content=\"Secondo due studi condotti in Canada, Chlamydia abortus \u00e8 il principale agente patogeno responsabile di aborti negli ovini e nei caprini.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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