Multivariate analysis of traditional pig management practices and their potential impact on the spread of infectious diseases in Corsica

Relun, Anne A.; Charrier, François; Trabucco, Bastien; Maestrini, Oscar; Molia, Sophie; Chavernac, David; Grosbois, Vladimir; Casabianca, François; Etter, Éric; Jori, Ferrán

doi:10.1016/j.prevetmed.2015.07.004

Cited by 33 publications

(43 citation statements)

References 28 publications

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“…The vegetation in the pastures reflects the influence of both Mediterranean and mountain climates, with scrub ( maquis ), a mixture of rapidly growing evergreen herbs, bushes and small trees, holm oak ( Quercus ilex ), cork oak ( Quercus suber ), and olive trees up to 600 m, chestnut trees between 600 and 1000 m, and mostly grass above 1000 m above sea level. Oak and chestnut pastures are usually utilized to feed pigs in autumn [17], whereas grass mountain pastures are only used in summer. Pigs reared under the traditional breeding systems are mostly from the local breed called “Nustrale” [17].…”

Section: Methodsmentioning

confidence: 99%

“…Oak and chestnut pastures are usually utilized to feed pigs in autumn [17], whereas grass mountain pastures are only used in summer. Pigs reared under the traditional breeding systems are mostly from the local breed called “Nustrale” [17]. …”

Section: Methodsmentioning

confidence: 99%

“…Ten visits to the abattoir were organized between December 2013 and February 2014, which is the usual period of pig slaughtering in the traditional pig farming system [17]. The name, origin and breeding system of the pig farm (close, open or semi-open) was recorded.…”

Section: Methodsmentioning

confidence: 99%

“…In Corsica, domestic pigs are commonly raised in semi-open or open spaces, the latter being particularly widespread and anchored in cultural traditions from the island [16,17]. This kind of breeding system allows frequent interactions with wild boars, equally widespread in the Corsican ecosystem, resulting in a free circulation of feral wild boar × domestic pig hybrids [18,19] that are perfectly distinguishable from pure bred Eurasian wild boars [20].…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Domestic Pigs, Wild Boars and Feral Hybrid Pigs as Reservoirs of Hepatitis E Virus in Corsica, France

Jori

Laval

Maestrini

et al. 2016

Viruses

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In Corsica, extensive pig breeding systems allow frequent interactions between wild boars and domestic pigs, which are suspected to act as reservoirs of several zoonotic diseases including hepatitis E virus (HEV). In this context, 370 sera and 166 liver samples were collected from phenotypically characterized as pure or hybrid wild boars, between 2009 and 2012. In addition, serum and liver from 208 domestic pigs belonging to 30 farms were collected at the abattoir during the end of 2013. Anti-HEV antibodies were detected in 26% (21%–31.6%) of the pure wild boar, 43.5% (31%–56.7%) of hybrid wild boar and 88% (82.6%–91.9%) of the domestic pig sera. In addition, HEV RNA was detected in five wild boars, three hybrid wild boars and two domestic pig livers tested. Our findings provide evidence that both domestic pig and wild boar (pure and hybrid) act as reservoirs of HEV in Corsica, representing an important zoonotic risk for Corsican hunters and farmers but also for the large population of consumers of raw pig liver specialties produced in Corsica. In addition, hybrid wild boars seem to play an important ecological role in the dissemination of HEV between domestic pig and wild boar populations, unnoticed to date, that deserves further investigation.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Assessment of Domestic Pigs, Wild Boars and Feral Hybrid Pigs as Reservoirs of Hepatitis E Virus in Corsica, France

Jori

Laval

Maestrini

et al. 2016

Viruses

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“…To a lesser extent, some closed pig farming system exist on the Island. Of note, a Protected Designation of Origin (PDO) label for pork products promotes the recognized local breed, “Nustrale,” and the Corsican traditional pig production (Relun et al, ; Territoires, ). This is of specific interest since “Nustrale” pigs reach the slaughter weight (100–130 kg) at the age of 15 to 18, or even 24 months, i.e.…”

Section: Introductionmentioning

confidence: 99%

Drastic decline of hepatitis E virus detection in domestic pigs after the age of 6 months, Corsica, France

Capai

Maestrini

Casabianca

et al. 2019

Transbound Emerg Dis

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Suidae is an important reservoir of hepatitis E virus (HEV) and a source of transmission to humans (direct contact or via consumption of meat products). Our goal was to characterize the epidemiology of HEV infecting domestic pigs in Corsica Island, a French region hyperendemic for HEV. In Corsica, traditional extensive (or semi‐extensive) outdoor pig farming system is common. Sixteen farms were selected according to location and breeding system. Individual pig faeces samples were collected and qRT‐PCR for detecting HEV RNA was performed. Nucleic acids from HEV‐positive samples were amplified using specific ORF2 genotyping system. The genotype and subtype of the Corsican HEV sequences were determined by phylogenetic analysis. Among the 919 porcine faeces samples tested 9.2% (n = 85) were positive. The presence of viral RNA was correlated with (a) age (>6 months) Adjusted Odd Ratio (AOR) 0.25 [0.068–0.90] p = .032; 3–4 months AOR = 4.94 [2.30–10.62] p = .000043) with the logistic regression model with a random effect at the farm level. Among the 85 positive samples, 83 belonged to genotype 3c and two to genotype 3f. The highest prevalence was observed in the 3–4 months age group and older age (>6 months) was negatively related to HEV infection and this suggests that traditional breeding with a late slaughter age may limit the risk of transmission to humans. A kinetic study of pigs from birth to slaughtering would allow to ensure that the type of traditional breeding reported here is very favourable to the absence of the virus in slaughtered pigs and in pork products.

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Herd typologies based on multivariate analysis of biosecurity, productivity, antimicrobial and vaccine use data from Danish sow herds

Kruse

Nielsen

Alban

2020

Preventive Veterinary Medicine

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Multivariate analysis of traditional pig management practices and their potential impact on the spread of infectious diseases in Corsica

Cited by 33 publications

References 28 publications

Assessment of Domestic Pigs, Wild Boars and Feral Hybrid Pigs as Reservoirs of Hepatitis E Virus in Corsica, France

Assessment of Domestic Pigs, Wild Boars and Feral Hybrid Pigs as Reservoirs of Hepatitis E Virus in Corsica, France

Drastic decline of hepatitis E virus detection in domestic pigs after the age of 6 months, Corsica, France

Herd typologies based on multivariate analysis of biosecurity, productivity, antimicrobial and vaccine use data from Danish sow herds

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