| Titles |
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English :
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Yersinia ruckeri as the causative agent of Enteric Redmouth disease (ERM) in Delta Nile fishes
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| Abstract |
Out of 1870 organs examined, 173 samples proved to harbor Y.ruckeri (9.3%). The higher incidence of isolation was higher from apparently healthy and diseased organs of O.niloticus (8.3% and 12.4% respectively) then C. lazera (7.0% and 10.8%). In Ch.auratus and C.carpio, the incidence in apparently healthy ones were 3.8% and 2.5% respectively.The most predilection seat of Y.ruckeri was the intestinal contents, followed by kidneys, liver, spleen and eyes. The clinical manifestations of infected fishes were erosion of jaws, congestion of hard palates, hemorrhages in body surfaces, bilateral exophthalmia. Post-mortem examination revealed enlargement of liver, spleen, kidneys and congestion of the lower part of the intestinal tract.
Morphological, cultural characteristics and biochemical reactions of Y.ruckeri isolates were discussed in details. Sorbitol fermentation has been proved as being a characteristic of the pathogenicity variety of Y.ruckeri. Mortality rates in C.lazera infected I/P with sorbitol and non sorbitol fermenting Y.ruckeri were 100% and 45% respectively.Clinical syndromes and PM lesions of experimentally infected fishes were discussed in details. The present work proved that no fish species susceptibility to Y.ruckeri either isolated from C.lazera or O.niloticus.
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| Publication year |
2001
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| Pages |
ص 173 -185
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| Organization Name |
Animal Health Research Institute (AHRI)
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| serial title |
الجمعية الطبية البيطرية المصرية
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| Department |
Fish Diseases
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| Author(s) from ARC |
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| External authors (outside ARC) |
د.ممدوح عبدالغنى عبد العزيز
كلية الطب البيطرى القاهرة
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| Agris Categories |
Animal diseases
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AGROVOC
TERMS |
Biochemical reactions.
Enteritis.
Infection.
Isolation techniques.
Oreochromis niloticus.
Staphylococcus aureus.
Yersinia ruckeri.
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| Proposed Agrovoc |
Redmouth disease ;
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| Publication Type |
Journal
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