OCCURRENCE AND PATHOGENICITY OF SERRATIA MARCESCENS AT FISH FARMS IN KAFR EL-SHEIKH GOVERNORATE
Gado, M., Abd El-Aziz, I. (2004). OCCURRENCE AND PATHOGENICITY OF SERRATIA MARCESCENS AT FISH FARMS IN KAFR EL-SHEIKH GOVERNORATE. EKB Journal Management System, 2(2), 71-92. doi: 10.21608/kvmj.2004.112425
M. S. Gado; Iman A. Abd El-Aziz. "OCCURRENCE AND PATHOGENICITY OF SERRATIA MARCESCENS AT FISH FARMS IN KAFR EL-SHEIKH GOVERNORATE". EKB Journal Management System, 2, 2, 2004, 71-92. doi: 10.21608/kvmj.2004.112425
Gado, M., Abd El-Aziz, I. (2004). 'OCCURRENCE AND PATHOGENICITY OF SERRATIA MARCESCENS AT FISH FARMS IN KAFR EL-SHEIKH GOVERNORATE', EKB Journal Management System, 2(2), pp. 71-92. doi: 10.21608/kvmj.2004.112425
Gado, M., Abd El-Aziz, I. OCCURRENCE AND PATHOGENICITY OF SERRATIA MARCESCENS AT FISH FARMS IN KAFR EL-SHEIKH GOVERNORATE. EKB Journal Management System, 2004; 2(2): 71-92. doi: 10.21608/kvmj.2004.112425

OCCURRENCE AND PATHOGENICITY OF SERRATIA MARCESCENS AT FISH FARMS IN KAFR EL-SHEIKH GOVERNORATE

Kafrelsheikh Veterinary Medical Journal
Article 5, Volume 2, Issue 2, October 2004, Pages 71-92    PDF (1.05 M)
Document Type: Original Article
DOI: 10.21608/kvmj.2004.112425
Authors
M. S. Gado* 1; Iman A. Abd El-Aziz2
1Poultry and Fish Dept., Fac. Vet. Med., Tanta Univ.
2Pathology Dept. Fac. Vet. Med., Tanta Univ.
Abstract
Aninvestigationwascarriedoutfor unusual disease outbreaks occurred on 5 commercial oreochromis niloticus (O.niloticus) fish farms during the peroid 2003 – 2004 ,  in 3 Districts in Kafr El-Sheikh Governorate. Affected fish exhibited anorexia , sluggishness , variously sized areas of haemorrhage on the skin , corneal opacity and high mortality up to 21.4% . Bacterial isolates from the moribund fish were identified as Serratia marcescens (S.marcescens)by biochemical tests revealed 28 isolates. The virulence properties of this isolates , studied revealed that werehighlypathogenicfor fishwithLD50srangingfrom5x103to 1x105.  Moreover , the isolates were pathogenic for mice with LD50 1.6x106. Histopathological alterationsof the naturalandexperimental infections are described . The antibiogramme of the isolated S.marcescens was investigated .This study is considered the first record of S.marcescens infection in O.niloticus fish in Egypt .
Keywords
Oreochromis niloticus; Serratia marcescens
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