Clinicopathological and Hematological Changes in Consequence to Experimental Infection of Rabbits with Pasteurella Multocida Type A

The current research aimed to study clinical, hematological and pathological changes occurred due to experimentally challenged rabbits with Pasteurella multocida type A. Twelve healthy Pasteurella multocida free rabbits were divided into control and challenged groups. Rabbits of the challenged group...

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Autores principales: Fatma Mohamed, Abeer El Hendy, Ahmed Khalaf Hassan
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Publicado: South Valley University 2020
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spelling oai:doaj.org-article:dd9568a3799a4984a53afdd86447e1bf2021-12-02T09:11:55Z Clinicopathological and Hematological Changes in Consequence to Experimental Infection of Rabbits with Pasteurella Multocida Type A10.21608/SVU.2020.28129.10482535-18262535-1877https://doaj.org/article/dd9568a3799a4984a53afdd86447e1bf2020-05-01T00:00:00Zhttps://svu.journals.ekb.eg/article_87607.htmlhttps://doaj.org/toc/2535-1826https://doaj.org/toc/2535-1877The current research aimed to study clinical, hematological and pathological changes occurred due to experimentally challenged rabbits with Pasteurella multocida type A. Twelve healthy Pasteurella multocida free rabbits were divided into control and challenged groups. Rabbits of the challenged group were intra-nasally inoculated with 0.5 ml of 1x105 CFU of Pasteurella multocida type A, while rabbits of the control group were inoculated with 0.5 ml of brain heart infusion broth (BHI). Clinical signs, hematological parameters and histopathological lesions were recoded for 14 days. Rabbits of challenged group showed nasal rubbing with minimal mucus discharge, conjunctivitis and reduction in spontaneous activity, but no mortality occurred. Hematologically, there was highly significant low RBCs count with concomitant significantly reduction of PCV in challenged rabbits, but hemoglobin concentration was insignificantly low in challenged animals as compared to control. Although, there was insignificant increase of WBCs count in challenged group, neutrophils and monocytes recorded significant and highly significant high value in challenged rabbits than control, respectively. Challenged rabbits, however demonstrated highly significant lymphopenia, but other blood parameters did not show any significant differences between challenged and control rabbits. Histopathologically, challenged animals showed meningitis, congestion and degenerative changes in respiratory epithelium, bronchopneumonia, vacuolar degeneration of hepatocytes and vascular changes in heart and spleen. Conclusively, the current study verified that challenging rabbits with Pasteurella multocida serotype A was not lethal and although it was essentially pneumotropic in nature, it caused lesions in other visceral organs, which in absence of bacteremia, could be caused by bacterial endotoxin liberated during disease pathogenesis. Fatma MohamedAbeer El HendyAhmed Khalaf HassanSouth Valley Universityarticlepasteurella multocidahematological parametershistopathological lesionsAgricultureSVeterinary medicineSF600-1100ENSVU-International Journal of Veterinary Sciences, Vol 3, Iss 2, Pp 1-13 (2020)
institution DOAJ
collection DOAJ
language EN
topic pasteurella multocida
hematological parameters
histopathological lesions
Agriculture
S
Veterinary medicine
SF600-1100
spellingShingle pasteurella multocida
hematological parameters
histopathological lesions
Agriculture
S
Veterinary medicine
SF600-1100
Fatma Mohamed
Abeer El Hendy
Ahmed Khalaf Hassan
Clinicopathological and Hematological Changes in Consequence to Experimental Infection of Rabbits with Pasteurella Multocida Type A
description The current research aimed to study clinical, hematological and pathological changes occurred due to experimentally challenged rabbits with Pasteurella multocida type A. Twelve healthy Pasteurella multocida free rabbits were divided into control and challenged groups. Rabbits of the challenged group were intra-nasally inoculated with 0.5 ml of 1x105 CFU of Pasteurella multocida type A, while rabbits of the control group were inoculated with 0.5 ml of brain heart infusion broth (BHI). Clinical signs, hematological parameters and histopathological lesions were recoded for 14 days. Rabbits of challenged group showed nasal rubbing with minimal mucus discharge, conjunctivitis and reduction in spontaneous activity, but no mortality occurred. Hematologically, there was highly significant low RBCs count with concomitant significantly reduction of PCV in challenged rabbits, but hemoglobin concentration was insignificantly low in challenged animals as compared to control. Although, there was insignificant increase of WBCs count in challenged group, neutrophils and monocytes recorded significant and highly significant high value in challenged rabbits than control, respectively. Challenged rabbits, however demonstrated highly significant lymphopenia, but other blood parameters did not show any significant differences between challenged and control rabbits. Histopathologically, challenged animals showed meningitis, congestion and degenerative changes in respiratory epithelium, bronchopneumonia, vacuolar degeneration of hepatocytes and vascular changes in heart and spleen. Conclusively, the current study verified that challenging rabbits with Pasteurella multocida serotype A was not lethal and although it was essentially pneumotropic in nature, it caused lesions in other visceral organs, which in absence of bacteremia, could be caused by bacterial endotoxin liberated during disease pathogenesis.
format article
author Fatma Mohamed
Abeer El Hendy
Ahmed Khalaf Hassan
author_facet Fatma Mohamed
Abeer El Hendy
Ahmed Khalaf Hassan
author_sort Fatma Mohamed
title Clinicopathological and Hematological Changes in Consequence to Experimental Infection of Rabbits with Pasteurella Multocida Type A
title_short Clinicopathological and Hematological Changes in Consequence to Experimental Infection of Rabbits with Pasteurella Multocida Type A
title_full Clinicopathological and Hematological Changes in Consequence to Experimental Infection of Rabbits with Pasteurella Multocida Type A
title_fullStr Clinicopathological and Hematological Changes in Consequence to Experimental Infection of Rabbits with Pasteurella Multocida Type A
title_full_unstemmed Clinicopathological and Hematological Changes in Consequence to Experimental Infection of Rabbits with Pasteurella Multocida Type A
title_sort clinicopathological and hematological changes in consequence to experimental infection of rabbits with pasteurella multocida type a
publisher South Valley University
publishDate 2020
url https://doaj.org/article/dd9568a3799a4984a53afdd86447e1bf
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