UPM Institutional Repository

Effect of route of infection on development of streptococcosis in Red tilapia


Abdullah, Syuhaidah and Mohd Yusoff, Md Sabri and Omar, Noraini (2012) Effect of route of infection on development of streptococcosis in Red tilapia. In: 7th Seminar in Veterinary Sciences, 27 Feb.-2 Mar. 2012, Faculty of Veterinary Medicine, Universiti Putra Malaysia. .


The effect of route of infection on the development of streptococcosis in the red tilapia was assessed using histopathological, PCR, microbiological and immunohistochemical methods. Three hundred healthy, adult Red tilapias (Oreochromis spp.) were obtained from a commercial hatchery. Forty-eight fish were randomly taken from the same age and weight (150 g) per group. Fish were clinically examined and screened one week prior to the experiment. The experiment was divided into three groups with duplicates. Group 1 was exposed to Streptococcus agalactiae intraperitoneally (IP), Group 2 was exposed to S. agalactiae through an immersion broth, and Group 3 was exposed through a skin cut immersion. The fish were necropsied at the end of 24 hours exposure, and the brain, eye and kidney samples were taken for microbiological, histopathological examinations and indirect immunoperoxidase test. Statistical analysis (ANOVA) from the histopathological lesions revealed that there was significant (p<0.05) difference between the route of infection in the brain but not in the eye and kidney, while IP route showed severe lesions at 8 hours post-inoculation. In conclusion, S. agalactiae was pathogenic to Red tilapia causing septicaemia and severe pathological changes through different routes of infection.

Download File

PDF (Abstract)

Download (35kB) | Preview

Additional Metadata

Item Type: Conference or Workshop Item (Paper)
Divisions: Faculty of Veterinary Medicine
Keywords: Streptococccus agalactiae; Immunoperoxidase; Histopathology; Oreochromis sp.
Depositing User: Azizan Arshad
Date Deposited: 25 Oct 2013 04:05
Last Modified: 10 Aug 2016 04:36
URI: http://psasir.upm.edu.my/id/eprint/26845
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item