Survey of pleuritis and pulmonary lesions in pigs at abattoir with a focus on the extent of the condition and herd risk factors

Merialdi, G.; Dottori, M.; Bonilauri, Paolo; Luppi, Andrea; Gozio, S.; Pozzi, Paolo; Spaggiari, B.; Martelli, Paolo

doi:10.1016/j.tvjl.2011.11.009

Cited by 120 publications

(203 citation statements)

References 24 publications

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“…Our data showed a low prevalence of pleurisy (7–12 per cent) in the slaughter pigs of this herd, when compared with prevalence figures (ie, 15–60 per cent) obtained in several epidemiological studies carried out recently in Europe (Fraile and others 2010, Meyns and others 2011, Fablet and others 2012a,b, Merialdi and others 2012). This low prevalence of pleurisy may indicate a low impact on respiratory disease in this study.…”

Section: Discussionsupporting

confidence: 63%

Efficacy of early Mycoplasma hyopneumoniae vaccination against mixed respiratory disease in older fattening pigs

et al. 2014

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The present field study investigated the efficacy of early Mycoplasma hyopneumoniae vaccination in a farrow-to-finish pig herd with respiratory disease late in the fattening period due to combined infections with M hyopneumoniae and viral pathogens. Five hundred and forty piglets were randomly divided into three groups of 180 piglets each: two groups were vaccinated (Stellamune Once) at either 7 (V1) or 21 days of age (V2), and a third group was left non-vaccinated (NV). The three treatment groups were housed in different pens within the same compartment during the nursery period, and were housed in different but identical compartments during the fattening period. The efficacy was evaluated using performance and pneumonia lesions. The average daily weight gain during the fattening period was 19 (V1) and 18 g/day (V2) higher in both vaccinated groups when compared with the NV group. However, the difference was not statistically significant (P>0.05). The prevalence of pneumonia was significantly lower in both vaccinated groups (V1: 71.5 and V2: 67.1 per cent) when compared with the NV group (80.2 per cent) (P<0.05). There were no significant differences between the two vaccination groups. In conclusion, in the present herd with respiratory disease during the second half of the fattening period caused by M hyopneumoniae and viral infections, prevalence of pneumonia lesions were significantly reduced and growth losses numerically (not statistically significant) decreased by both vaccination schedules.

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Section: Discussionsupporting

confidence: 63%

Efficacy of early Mycoplasma hyopneumoniae vaccination against mixed respiratory disease in older fattening pigs

et al. 2014

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“…Meyns et al (2011) found a prevalence of 20.76 % visible lesions of pleuritis, and 23.85 % of visible lesions of pneumonia in a study in which over 6000 slaughter pigs were examined. Merialdi et al (2012) found enzootic pneumonia-like lesions in 46.4 % of lungs. Fablet et al (2012) studied the association between lesions and micro-organisms in lungs of 3731 pigs from 125 herds, and found that Mycoplasma hyopneumoniae and Pasteurella multocida were most often associated with lesions (with 69.3 % and 36.9 % of affected lungs respectively).…”

Section: Zoonotic Diseasementioning

confidence: 93%

“…In slaughter pigs, lung lesions are a relatively common find (Meyns et al, 2011, Merialdi et al, 2012. Meyns et al (2011) found a prevalence of 20.76 % visible lesions of pleuritis, and 23.85 % of visible lesions of pneumonia in a study in which over 6000 slaughter pigs were examined.…”

Section: Zoonotic Diseasementioning

confidence: 99%

Animal health and disease monitoring in the abattoir

2015

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“…The extent and location of macroscopically visible pleurisy was assessed based on Slaughterhouse Pleurisy Evaluation System (SPES) (Merialdi and others 2012). Briefly, the SPES score ranges from 0 to 4: 0 (absence of chronic pleuritis lesions), 1 (cranial-ventral lesion: pleural adherence between lobes or at ventral border of lobes), 2 (dorsocaudal unilateral focal lesion), 3 (bilateral lesion of type 2 or extended unilateral lesion, at least 1/3 of one diaphragmatic lobe), and 4 (severely extended bilateral lesion, at least 1/3 of both diaphragmatic lobes).…”

Section: Methodsmentioning

confidence: 99%

“…However, the effect of subunit toxin-based vaccines against A pleuropneumoniae on pleurisy under field conditions of porcine respiratory disease complex (PRDC) has not yet been described. Epidemiological studies, carried out in Spain (Fraile and others 2010), Belgium (Meyns and others 2011), France (Fablet and others 2012) and Italy (Merialdi and others 2012) showed that pleurisy is, indeed, commonly found in slaughter pigs.…”

Section: Introductionmentioning

confidence: 99%

Efficacy of vaccination againstActinobacillus pleuropneumoniaein two Belgian farrow‐to‐finish pig herds with a history of chronic pleurisy

Sacristán

Michiels

Martens³

et al. 2014

Veterinary Record

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The efficacy of an Actinobacillus pleuropneumoniae subunit vaccine based on ApxIA, ApxIIA, ApxIIIA and OMP-2 (Porcilis App, MSD) was investigated in two farrow-to-finish pig herds (A and B) affected by chronic pleurisy. In total, 1161 pigs were included. At three weeks of age, the pigs were randomly allocated to non-vaccinated control (NV; n=580) and vaccinated (V; n=581) groups. At 6 and 10 weeks of age, pigs were injected with Porcilis-APP (V group) or adjuvant (NV group). At slaughter (26 weeks), pleurisy and pneumonia lesions were assessed. All pigs were weighed individually at 6 and 26 weeks of age, and average daily weight gain (ADG; g/pig/day) was calculated. Mortality and days of additional treatment (DAT) were registered during the whole experiment. Data were analysed using binary logistic regression or analysis of variance for proportions or continuous variables, respectively. The prevalence of pleurisy and pneumonia was (NV-A=19.3, V-A=7.9, (P=0.000); NV-B=17.9, V-B=0.7, (P=0.000)) and (NV-A=42.4, V-A=21.2, (P=0.000); NV-B=46.7, V-B=19.0, (P=0.000)), respectively. The ADG was NV-A=632±157, V-A=647±91, (P=0.162); NV-B=660±115, V-B=670±82, (P=0.232). The mortality during the experiment was NV-A=5.7, V-A=1.8, (P=0.015); NV-B=2.3, V-B=1.0, (P=0.170) per cent. The DAT was: NV-A=15.04±1.41, V-A=14.95±0.67, (P=0.010); NV-B=21.68±2.43, V-B=16.99±0.62, (P=0.000). The present study showed a significant reduction of the prevalence of pleurisy and pneumonia, and antimicrobial use in V pigs from both herds, and in mortality in V pigs from one herd.

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Survey of pleuritis and pulmonary lesions in pigs at abattoir with a focus on the extent of the condition and herd risk factors

Cited by 120 publications

References 24 publications

Efficacy of early Mycoplasma hyopneumoniae vaccination against mixed respiratory disease in older fattening pigs

Efficacy of early Mycoplasma hyopneumoniae vaccination against mixed respiratory disease in older fattening pigs

Animal health and disease monitoring in the abattoir

Efficacy of vaccination againstActinobacillus pleuropneumoniaein two Belgian farrow‐to‐finish pig herds with a history of chronic pleurisy

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