Histopathological changes of rainbow trout after experimental infection with Lactococcus garvieae

Year 2017, Volume: 2 Issue: 3, 12 - 20, 29.12.2017

Jale Korun , Gülşen Timur Eda Yardımcı , Beytullah Balcı

https://doi.org/10.31797/vetbio.336079

Cited By: 2

Abstract

The
purpose of this study is to determine both clinical and histopathological
changes in experimentally infected rainbow trout with Lactococcus garvieae. Fourty healthy fish samples (50-60 g in
weight) were purchased from a commercial farm near Antalya, Turkey and
transferred to the laboratory. Each group of fish were challenged a cell
density of 6x10⁵ cfu/ml of L.
garvieae isolate. The control group was given with the appropriate dilution of the sterile
PBS. Fish showed darkening of skin color, lesion on the upper jaw and
prolapsus. Internally, they had pale liver and kidney, enlarged spleen and
hemorrhagies on the muscle. The control group did not show clinical sings.
Histopathologically, the kidney and liver showed haemosiderin deposits.
Lamellar fusion and hyperplasia of primary lamellae in the gills, depletions of
red and white pulpas in the spleen and necrosis of the gastro-intestinal tract
were detected.

Keywords

Rainbow trout Lactococcus garvieae

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