Histopathological and histoenzymatic studies on bronchopneumonia in sheep

Dar, Latief Mohammad; Darzi, M.M.; Mir, Masood Saleem; Kamil, Shayaib Ahmad; Rashid, Abdul; Abdullah, Swaid; Hussain, Syed Ashaq; Rather, Faroze Ahmad; Parihar, S.

doi:10.1080/09712119.2013.845101

Cited by 10 publications

(14 citation statements)

References 23 publications

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“…In agreement with the present finding, previous investigations in other countries also reported bronchopneumonia as the commonest type of pneumonia in sheep and goats [28, 29, 31, 32]. The gross and histological lesions of the different forms of bronchopneumonia were consistent with the findings of other studies [11, 33–36]. The lesions could be associated with contagious caprine pleuropneumonia (in goats) or pneumonic pasteurellosis as these diseases are characterized by fibrinous and suppurative bronchopneumonia patterns [4, 37, 38].…”

Section: Discussionsupporting

confidence: 93%

“…Interstitial pneumonia was the second dominant type of pneumonia in this study detected in 41.9% of the pneumonic animals. The gross and histopathological characteristics of the lesions in the affected lungs were similar to earlier reports [11, 49, 50]. It was appreciated in both species; however, the proportion was considerably higher in sheep (51.2 %) than in goats (29.7 %).…”

Section: Discussionsupporting

confidence: 88%

“…), and environmental factors (temperature, humidity, dust levels, etc.) [10, 11]. Irrespective of the cause, respiratory diseases significantly impact upon the profitability of farms, both directly and indirectly [12] and compromise the welfare of the animals [13].…”

Section: Introductionmentioning

confidence: 99%

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Prevalence of Pneumonia in Sheep and Goats Slaughtered at Elfora Bishoftu Export Abattoir, Ethiopia: A Pathological Investigation

Mekibib

Mikir

Fekadu

et al. 2019

Journal of Veterinary Medicine

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Accurate clinical diagnosis of pneumonia, the leading cause of mortality in small ruminants, is difficult and usually requires postmortem examination of the lungs. An active abattoir survey was conducted between November 2017 and April 2018 to estimate the prevalence and characterize the gross and histopathological lesions of pneumonic lungs in 864 clinically healthy young small ruminants (490 sheep and 374 goats aged 1.5 to 3 years) raised for meat in different parts of the country and slaughtered at Elfora Bishoftu export abattoir, Ethiopia. Out of the total lungs examined grossly, pneumonic lesions were found in 158 (18.29%) lungs. On histopathological examination of the lungs with gross pneumonic lesion, however, typical pneumonic lesions were diagnosed in 148 (17.13%) lungs only. No significant (p>0.05) difference was noted in the prevalence of pneumonia between sheep (17.14%) and goats (17.11%) in histopathological examination. Based on the predominant histopathological findings, the pneumonic lesions were characterized as interstitial pneumonia (41.9%), acute suppurative bronchopneumonia (25.7%), acute fibrinous bronchopneumonia (24.3%), chronic bronchopneumonia (6.1%), aspiration pneumonia (4.7%), bronchointerstitial pneumonia (3.4%), and ovine pulmonary adenomatosis (3.4%). The study further showed the spread of ovine pulmonary adenomatosis and ovine progressive pneumonia (Maedi) from the central highlands to areas that were previously free from these diseases. Due to its better diagnostic capacity, histopathology should be employed routinely as an ancillary test in the major abattoirs and regional veterinary laboratories to generate additional epidemiological data for a better disease control and prevention measures. Further studies are also recommended to identify the etiological agents of pneumonia in sheep and goats and thereby to formulate feasible and cost-effective interventions.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 88%

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Prevalence of Pneumonia in Sheep and Goats Slaughtered at Elfora Bishoftu Export Abattoir, Ethiopia: A Pathological Investigation

Mekibib

Mikir

Fekadu

et al. 2019

Journal of Veterinary Medicine

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“…The pathological lesions of pneumonic lung tissues in the present study were similar to those in the previous studies on pasteurellosis (14,15). Akloul and Menoueri (16) also recorded consolidation in the whole of the apical lobe of the pneumonic lung with bacterial infections, which supports the findings of the present study.…”

Section: Discussionsupporting

confidence: 92%

Molecular detection of virulent Mannheimia haemolytica and Pasteurella multocida in lung tissues of pneumonic sheep from semiarid tropics, Rajasthan, India

Singh¹,

Sonawane²,

Meena³

2018

Turk J Vet Anim Sci

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The present study was planned to detect the genetic elements of Mannheimia haemolytica and Pasteurella multocida in pneumonic sheep lungs. Pneumonia was diagnosed on the basis of gross pathological lesions. Lung tissues were collected at necropsy of sheep (n = 96) and subjected to isolation of total DNA. The M. haemolytica-specific PHSSA and Rpt2 genes, and the P. multocidaspecific KMT1 and the Omp87 genes were amplified using polymerase chain reaction (PCR). A housekeeping gene targeting the sheep cellular mitochondrial 12S ribosomal DNA was used as an internal control. PCR reactions were optimized using the positive and negative controls. Gene-specific PCR products were subjected to nucleotide sequencing for confirmation. The pneumonic lungs showed congestion and hemorrhagic changes with consolidation, which was most evident in the whole of the apical lobes and parts of the diaphragmatic lobes. PCR amplification showed detection of PHSSA (327 bp) and Rpt2 (~1022 bp) genes specific to M. haemolytica in 52 (54.1%), and the KMT1 (457 bp) and Omp87 (2627 bp) genes specific to P. multocida in 16 (16.6%) lung samples. Sequence analysis confirmed the PCR products for specific genes. This study highlighted the culture-independent, rapid, and confirmatory diagnosis of ovine pneumonic pasteurellosis caused by M. haemolytica and/or P. multocida.

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“…The higher frequency of lesions on the right side of the lung and the increased vulnerability of apical and cardiac lobes are similar to those described by Alley (1975), Haziroglu (1994, Ozyildiz et al (2012) and Dar et al (2014); this is a special form of pneumonia called chronic or atypical pneumonia.…”

Section: Discussionsupporting

confidence: 68%

Pneumonia in Algerian Ouled Djellal sheep: Bacteriological study and macroscopic aspect of lung lesions

Akloul¹,

Menoueri²

2016

Afr. J. Microbiol. Res.

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Respiratory diseases in sheep are a multifactorial etiology syndrome, causing great economic losses. This study was carried out with the aim of establishing a bacteriological diagnosis of respiratory diseases in sheep, on the basis of lungs with macroscopic lesions taken from sheep slaughtered at the Blida abattoir. A total of 150 samples (swabs and lung parenchyma) from 75 Ouled Djellal sheep, aged six to twelve months old, with pulmonary lesions, were collected to determine possible correlations between the etiological agents and the type of lesion. Hepatization (or consolidation) was the main lesion observed (70%), preferentially localized on the right apical lobe (88% of the cases). This is a special form of pneumonia called atypical pneumonia. A varied microbial flora was isolated, alone or in association, namely bacteria with respiratory tropism as well as others of secondary infection. The bacteria most frequently isolated were γ-hemolytic streptococci (18%), Escherichia coli (17.5%), Micrococcus species (14.5%), and coagulase-negative staphylococci (10.5%); the large family of Enterobacteriaceae represented nearly 43% of the isolates. The pneumotropic bacteria (Mannheimia haemolytica and Pasteurella multocida) which count for 5.6% of the isolates, turned out to be correlated with the hepatization lesions.

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Histopathological and histoenzymatic studies on bronchopneumonia in sheep

Cited by 10 publications

References 23 publications

Prevalence of Pneumonia in Sheep and Goats Slaughtered at Elfora Bishoftu Export Abattoir, Ethiopia: A Pathological Investigation

Prevalence of Pneumonia in Sheep and Goats Slaughtered at Elfora Bishoftu Export Abattoir, Ethiopia: A Pathological Investigation

Molecular detection of virulent Mannheimia haemolytica and Pasteurella multocida in lung tissues of pneumonic sheep from semiarid tropics, Rajasthan, India

Pneumonia in Algerian Ouled Djellal sheep: Bacteriological study and macroscopic aspect of lung lesions

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