Occurrence of antibodies against Neospora caninum in sows and factors associated with infection in commercial herds in two regions of the state of Santa Catarina, Brazil

Silva, Marcio Orides da; Snak, Alessandra; Reiter, Jéssica  Ceruti; Serighelli, Gilberto; Cristani, José; Moura, Anderson Barbosa de

doi:10.5433/1679-0359.2020v41n2p697

Cited by 2 publications

(3 citation statements)

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“…Indeed, sows are slaughtered at an older age (3-5 years or more) than fattening pigs (approximately 9 months), increasing their risk of acquiring the infection through environmental, horizontal transmission. The same finding was previously revealed in pigs also in other studies (Wyss et al 2000;Silva et al 2019;Gui et al 2020).…”

Section: Discussionsupporting

confidence: 90%

“…The values recorded in other European studies resulted similar but lower than those of our study: 1–3% in Switzerland (Wyss et al 2000 ), 3% in the Czech Republic (Bártová and Sedlák 2011 ), 0.04% in Germany (Damriyasa et al 2004 ), and 0% in England (Helmick et al 2002 ). Outside Europe, some studies were conducted in Brazil, where the seroprevalence varied between 3.1–3.2% (Azevedo et al 2010 ; Feitosa et al 2014 ), 13.5% (Minetto et al 2019 ), and 18.9% (Silva et al 2019 ). Moreover, a study from China recorded a prevalence of 1.9%, and parasitic DNA was detected in the brain tissues of three pigs (Gui et al 2020 ).…”

Section: Discussionmentioning

confidence: 99%

“…The occurrence of N. caninum natural infection in pigs was reported in some countries throughout the world with varying antibody prevalence depending on the region, the production system, and the diagnostic test employed (Wyss et al 2000 ; Damriyasa et al 2004 ; Helmick et al 2002 ; Azevedo et al 2010 ; Bártová and Sedlák 2011 ; Feitosa et al 2014 ; Minetto et al 2019 ; Silva et al 2019 ; Gui et al 2020 ).…”

Section: Introductionmentioning

confidence: 99%

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Prevalence of Neospora caninum antibodies in fattening pigs and sows from intensive farms in northern Italy

et al. 2022

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Neospora caninum (Apicomplexa, Sarcocystidae) is a major cause of reproductive failure in cattle. In pigs, only a few studies investigated the effects of this parasite on reproductive efficiency. Considering the relevance of swine farms in northern Italian regions, an epidemiological survey was designed to investigate the spread of N. caninum infection. Three hundred seventy fattening pigs and sows from 23 intensive farms in Lombardy were sampled. Sera were analyzed by a commercial immunofluorescence antibody test. Statistical analysis through univariate and multivariate generalized linear models was conducted to detect farm management practices enhancing the risk of infection. At the farm level, 52.1% (12/23) of the selected farms, 72.7% housing sows and 40% fattening pigs, scored positive. At the individual level, 25 animals (25/370, P = 6.7%) were positive to N. caninum antibodies: one fattening pig and two sows showed an antibody titer of 1:100, and in two sows, an antibody titer of 1:400 and 1:6400 was evidenced. A higher seroprevalence was detected in sows (17/151, P = 11.2%) if compared to fattening pigs (8/219, P = 3.6%) (OR = 1.19, P value = 0.000 in sows). Moreover, a higher seroprevalence was recorded in farms with low and moderate sanitary score (P = 100% and P = 64.2%, respectively) if compared to farms with high sanitary score (P = 22.2%) (OR = 1.24, P value = 0.007 in score = 1 and OR = 1.10, P value = 0.050 in score = 2). This study provides the first data on the circulation of N. caninum in intensive swine farms in Italy, demonstrating the spread of the parasite in fattening pigs and sows in Lombardy region.

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Section: Discussionsupporting

confidence: 90%