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Online Journal of Veterinary Research

Volume 21(10):669-675, 2017.

Prevalence of viral hemorrhagic septicemia virus (Novirhabdovirus) in rainbow trout (Onchorynchus mykiss).


Kourosh Khodadadi1*, Hamid Alidoosti2, Ardeshir Ganji3, Fazlollah Abbasi4, Elahe Tajbakhsh5


1,2,4,5Faculty of Veterinary Science, Islamic Azad University, 3Animal Disease Control and Monitoring, Shahrekord, Iran




Khodadadi K, Alidoosti H, Ganji A, Abbasi F, Tajbakhsh E., Prevalence of viral hemorrhagic septicemia virus (Novirhabdovirus) in rainbow trout (Onchorynchus mykiss). Onl J Vet Res., 21(9):669-675, 2017. Novirhobdovirus causes viral hemorrhagic septicemia (VHS) in rainbow trout. Tissue samples (258) from trout with symptoms of VHS from 84 aquacultural farms around Bakhtiari, Iran were tested for virus by RT-PCR. Prevalence, water temperature, season and body weight and fish size data were recorded. Twenty one samples (7.4%) proved positive. Water temperature ranged 6.8ϲ - 24.7ϲ. Results suggested higher incidence of VHS in colder water (P < 0.163), older fish (p=0.042) and lower body weight (P < 0.05)

KEY-WORDS: Rainbow trout, viral hemorrhagic septicemia, prevalence, RT-PCR.