Ascaris suum in pigs of the Zona da Mata, Minas Gerais State, Brazil

Fausto, Mariana Costa; Oliveira, Isabela de Castro; Fausto, Guilherme Costa; Carvalho, Lorendane Millena de; Valente, Fabrício Luciani; Campos, Artur Kanadani; Araújo, Jackson Víctor de

doi:10.1590/s1984-29612015047

Cited by 8 publications

(10 citation statements)

References 15 publications

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“…However, these authors maintain that the method of inspection, which avoids heart incisions, probably contributed to a lower rate of detection of this lesion. Finally, the prevalence of liver milk spots was unexpectedly high, contrasting to the much lower prevalence stated in other countries [ 33 – 35 ]. This suggests that stricter control programmes should be implemented on-farms.…”

Section: Discussionmentioning

confidence: 58%

A cross-sectional survey on respiratory disease in a cohort of Irish pig farms

et al. 2020

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Background Respiratory disease is one of the most important factors impacting pig production worldwide. There is no available information on the prevalence of key pathogens implicated in Irish pig production. The objective of this study was to describe the prevalence of pleurisy, pneumonia, lung abscesses, pericarditis and liver milk spots in finisher pigs of a cohort of Irish pig farms, and to describe the seroprevalence of: influenza A virus (IAV), porcine reproductive and respiratory syndrome virus (PRRSv), Mycoplasma hyopneumoniae (Mhyo) and Actinobacillus pleuropneumoniae (APP). Results In brief, 56 farrow-to-finish farms (29% of the Irish breeding herd) were enrolled in the study in 2017. Data on lungs, heart, and liver lesions were assessed for each farm at slaughter. An average of 417 (range 129–1154) plucks per farm were assessed for pleurisy, pneumonia, lung abscesses, pericarditis, and liver milk spots. Blood samples from 32 finisher pigs were collected at slaughter for each farm. The observed prevalence of pleurisy and pneumonia was one of the lowest reported in similar studies in Europe (13 and 11% estimated average within farm, respectively). Pleurisy lesions were mostly moderate and severe. Pneumonia lesions affected a low level of lung surface (5.8%). Prevalence of pericarditis was mid-high (8%) and the prevalence of liver milk spots was high, with an average of 29% of the livers affected. For serology, 78.6% of the farms were positive for IAV, 50% were positive for PRRSv, 71.4% were positive for Mhyo, and 98.2% were positive for APP. Influenza virus was the main pathogen associated with pleurisy (P < 0.001) and Mhyo was the main pathogen associated with pneumonia (P < 0.001) and pericarditis (P = 0.024). Conclusions Farms affected with pleurisy had moderate to severe lesions. Farms affected with pneumonia had mild lesions, which could be the effect of the generalised use of Mhyo vaccination in piglets. The seroprevalence of IAV, PRRSv, Mhyo and APP in the present study sample is similar to or lower than in other European countries. Further research on the PRRSv and APP strains circulating in Ireland is necessary to support the design of national or regional control plans.

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Section: Discussionmentioning

confidence: 58%

A cross-sectional survey on respiratory disease in a cohort of Irish pig farms

et al. 2020

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“…On the other hand, in the case of more than 8 milk spots occurring, the livers should be condemned (Pyz-Lukasik and Prost, 1999). However, other researchers (Cugmas et al, 2013;Fausto et al, 2015) suggest that the livers with milk spots, regardless of their number, should be deemed unfit for human consumption. Hence, meat industry suffers indirect economic losses through increased trimmings and disposal of livers, a byproduct that adds value to the supply chain (Harley et al, 2012;Fausto et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

“…However, other researchers (Cugmas et al, 2013;Fausto et al, 2015) suggest that the livers with milk spots, regardless of their number, should be deemed unfit for human consumption. Hence, meat industry suffers indirect economic losses through increased trimmings and disposal of livers, a byproduct that adds value to the supply chain (Harley et al, 2012;Fausto et al, 2015). Even though the losses due to milk spots are very variable because of different slaughterhouse costs and the fluctuating market prices of livers, the damage can be assessed at €0.26 per kg to destroy the livers and €0.87 per liver lost (Kanora, 2009).…”

Section: Resultsmentioning

confidence: 99%

Blood parameters, carcass and meat quality of slaughter pigs with and without liver milk spots

Čobanović¹,

Василев²,

Dimitrijević³

et al. 2017

BIOTEC ANIM HUSB

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The aim of this study was to determine the influence of liver milk spots on hematological, carcass and meat quality parameters in slaughter pigs. A total of 120 pigs with a live weight of approximately 115 kg and six months old were examined. Any signs of liver milk spots were recorded as present or absent according to Welfare Quality® protocol (2009). A complete blood picture was investigated. The following carcass quality parameters were measured: live, hot and cold carcass weights, dressing percentage, backfat thickness and meatiness. pH and temperature measurements were performed 45 minutes postmortem. Pork quality classes (PSE-pale, soft and exudative, normal, DFD-dark, firm and dry meat) were determined according to Adzitey and Nurul (2011) using pH 45 value. Pigs with liver milk spots had significantly higher middle-sized cell count (monocytes, eosinophils, and basophils) and neutrophils count, but significantly lower red blood cell count, hemoglobin concentration, hematocrit and MCV than unaffected pigs. The same group of pigs had significantly lower live weight, hot carcass weight, cold carcass weight, dressing percentage and meatiness compared to the pigs free of milk spot lesions. Pigs showing liver milk spots had significantly higher pH 45 value and incidence of DFD meat than pigs without pathological lesions in the livers. In conclusion, assessment of liver milk spots at slaughter line has potential to serve not only as an indirect measure of pig health and welfare, but also for the carcass and pork quality.

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“…These white areas of fibrosis represent the scars caused by the migration of ascarid roundworm, Ascaris suum, into the liver. This lesion has no clinical significance, but a large number of organs are condemned in meat inspection; due to the aspect of milk spots the livers are rejected as unfit for human consumption (Fausto et al 2015).…”

Section: Hepatobiliary Systemmentioning

confidence: 99%

A taste of pathology

et al. 2019

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Adult learning, or andragogy, provides a novel way of appreciating using food analogies as an effective learning tool in veterinary pathology. Facilitation of adult learning requires that new concepts be presented in a way that draws on the learner’s experience. Because veterinary students will have had considerable experience with a plethora of food items prior to enrolling in a pathology course, food analogies can provide an easy conduit for incorporating key learning concepts regarding veterinary pathology. In this paper, many of these analogies are presented, along with the mechanisms responsible for each of the characteristic lesions, in the hopes that their usefulness in the classroom can be highlighted to create a more engaging and facilitated learning environment.

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Ascaris suum in pigs of the Zona da Mata, Minas Gerais State, Brazil

Cited by 8 publications

References 15 publications

A cross-sectional survey on respiratory disease in a cohort of Irish pig farms

A cross-sectional survey on respiratory disease in a cohort of Irish pig farms

Blood parameters, carcass and meat quality of slaughter pigs with and without liver milk spots

A taste of pathology

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