Respiratory System

Caswell, Jeff; Williams, Kurt J.

doi:10.1016/b978-0-7020-5318-4.00011-5

Cited by 178 publications

(421 citation statements)

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“…However, there was marked fibrin exudation in alveolar, interlobular and subpleural spaces in 33 lung samples but with no difference between Groups (Table 2). No samples showed bacteriological growth nor histological lesions that would suggest the involvement of A. pleuropneumoniae or A. suis infection, in addition to the remarkable presence of fibrin, or that would suggest the presence of other agents (Caswell & Williams 2007). These results corroborate the findings of Ono et al (2003), Kich et al (2007), Hansen et al (2010) and Pors et al (2011) who suggest the ability of P. multocida to induce fibrin exudation in the lung and pleura.…”

Section: Discussionsupporting

confidence: 82%

“…The importance of this toxin in swine pleuropneumonia is questionable (Pijoan 2006, Borowski et al 2007, Boyce et al 2010) since other studies have reported the absence of this gene in isolates obtained from porcine lung samples (Borowski et al 2002, Heres 2009, Hansen et al 2010, Costa et al 2011, as was also observed in this study. The pathologic evaluation of the samples revealed the expected type of alterations, in agreement with the literature (Pijoan 2006, Caswell & Williams 2007. Clinical samples (Group A) showed more extent pneumonia (P=0.0408), as well as a higher occurrence of pleuritis (P=0.0048) and pericarditis (P=0.02).…”

Section: Discussionsupporting

confidence: 78%

“…Out of the fifteen samples with pleuritis, nine had fibrin deposition and ten had pericarditis simultaneously, two with severe fibrin accumulation. These findings contradict the literature (Pijoan 2006, Caswell andWilliams 2007), indicating that P. multocida does not cause fibrin exudation on pleural and pericardial cavities, which are typical lesions of Actinobacillus. pleuropneumoniae, Actinobacillus suis (A. suis) and/or H. parasuis infection, which were absent in the present study.…”

Section: Discussioncontrasting

confidence: 57%

“…These pathological changes were described by Pijoan (2006) and Caswell & Williams (2007) in cases of P. multocida infection. However, there was marked fibrin exudation in alveolar, interlobular and subpleural spaces in 33 lung samples but with no difference between Groups (Table 2).…”

Section: Discussionmentioning

confidence: 99%

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Anatomopathological pneumonic aspects associated with highly pathogenic Pasteurella multocida in finishing pigs

et al. 2017

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The bacterium Pasteurella multocida is a frequent cause of porcine respiratory disease complex in finishing pigs. Historically, the bacterium is recognized as an opportunistic agent, causing secondary bacterial pneumonia in pigs. Several Brazilian reports have suggested the ability of P. multocida to cause primary pulmonary infection that leads to the death of finishing pigs prior to slaughter. The aim of this study was to evaluate anatomopathological pulmonary findings associated with P. multocida infection that were obtained from animals with clinical respiratory disease and from animals at slaughter. Twenty-five lung samples from 14 herds of finishing pigs with acute clinical respiratory disease and 19 lungs collected at slaughter from a different set of 14 herds were studied. In all lung samples, bacterial isolation was performed, and only samples with pure P. multocida growth were included in the study. Gross and histopathological lesions were evaluated, as well as Influenza A, porcine circovirus type 2 (PCV2) and Mycoplasma hyopneumoniae co-infections. Pleuritis and pericarditis were more often observed in clinical samples (P<0.05). Moreover, there was a numerical trend indicating that pericarditis, lymphadenomegaly and cavity exudates were more often present in clinical samples. Thirteen lung samples were negative to M. hyopneumoniae, Influenza A and PCV2 by immunohistochemistry (IHC), with only P. multocida identified. In these cases, gross lesions such as pleuritis, pericarditis and lymphadenomegaly were always present, and no histologic lesions indicative of other agents such as Actinobacillus pleuropneumoniae, Actinobacillus suis or Haemophilus parasuis were observed. These findings suggest the ability of some P. multocida isolates to cause primary respiratory and systemic infection. However, in this study, it was not possible to determine specific virulence markers to explain these findings.

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Section: Discussionsupporting

confidence: 82%

Section: Discussionsupporting

confidence: 78%

Section: Discussioncontrasting

confidence: 57%

Section: Discussionmentioning

confidence: 99%

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Anatomopathological pneumonic aspects associated with highly pathogenic Pasteurella multocida in finishing pigs

et al. 2017

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“…The involuntary nature of ventilation actively pulls large volumes of air into the lungs along with a variety of potentially injurious materials/organisms. In addition, the lung is acting as a septic organ where all potentially harmful substances/organisms are disposed the moment the entire cardiac output is passing through the extensive and delicate vascular bed of the gas exchange region of the lungs [23]. account to the total rejection rate of 63.1%.…”

Section: Discussionmentioning

confidence: 99%

Major Causes of Total Organ Condemnation and their Direct Financial Impact in Cattle Slaughtered at Hawassa Municipality Abattoir, SouthernEthiopia

Tilahun¹,

Fekadu²,

Mekibib³

2017

J Vet Sci Technol

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The study was conducted to identify major causes of total organs condemnation in cattle slaughtered at Hawassa city municipal abattoir and to estimate the associated direct financial losses. To this effect, a cross sectional active abattoir survey was conducted on 609 cattle from October 2015 to April 2016. During ante mortem examination, various types of abnormalities were detected in 39 (6.4%) cattle which includes rough hair coat 8(1.3%), teeth grinding 7(1.2%), dyspnea 5(0.8%), diarrhea 5(0.8%), lameness 4(0.7%), nasal discharge 2(0.3%), blindness 2(0.3%), early LSD signs 2(0.3%), dry muzzle 2(0.3%), paraphimosis 1(0.2%) and gangrenous testis 1(0.2%). On postmortem examination inspected, 96.1% (585) of the examined lungs (n=609) were condemned due to different disease conditions such as pneumonia (43.2%), hydatid cyst (24.8%), emphysema (18.9%), atelectasis (14.9%), and congestion (1%). Similarly, 63.1% of livers inspected were condemned due to fasciolosis (24.3%), calcification (15.3%), fibrosis (10.3%), fatty change (4.4%) and abscessation (1.8%). Heart and kidneys also had various abnormalities. The study further revealed that a total of 2,535,022.42 ETB (116, 611.03 USD) was lost due to the organs condemned during the active abattoir survey. To reduce organ condemnation rate and hence the associated financial loss and public health consequences, educating the public/the concerned bodies to avoid eating of raw meat, to improve canine health care and cattle management systems, to institute stray dog population management, to properly dispose condemned organs, and to implement regular deworming with effective anti-helminths are important. Moreover, proper and detail meat inspection at the abattoir and proper disposal or incineration of condemned organs are also recommended.

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Fetal Disease and Abortion

Baumgartner

2014

Bovine Reproduction

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Respiratory System

Cited by 178 publications

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Anatomopathological pneumonic aspects associated with highly pathogenic Pasteurella multocida in finishing pigs

Anatomopathological pneumonic aspects associated with highly pathogenic Pasteurella multocida in finishing pigs

Major Causes of Total Organ Condemnation and their Direct Financial Impact in Cattle Slaughtered at Hawassa Municipality Abattoir, SouthernEthiopia

Fetal Disease and Abortion

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