Growth, immune responses and protection of Nile tilapia Oreochromis niloticus immunized with formalin-killed Streptococcus agalactiae serotype Ia and III vaccines

The protective efficacy of formalin-killed Streptococcus agalactiae (Group B Streptococcus, GBS) serotype Ia (GBS-Ia) and III (GBS-III) vaccines were assessed in Nile tilapia (Oreochromis niloticus). The fish with an average weight of 34.45± 0.08 g were immunized by intraperitoneal (i.p.) injection...

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Bibliographic Details
Published in:Wārasān Songkhlā Nakharin 2017-08, Vol.39 (4), p.429-437
Main Authors: Atchariya Suwannasang, Naraid Suanyuk, Akkarawit Issaro, Wutiporn Phromkunthong, Chutima Tantikitti, Toshiaki Itami, Terutoyo Yoshida
Format: Article
Language:English
Subjects:
protection
serotype
Streptococcus agalactiae
tilapia
vaccine
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Summary:The protective efficacy of formalin-killed Streptococcus agalactiae (Group B Streptococcus, GBS) serotype Ia (GBS-Ia) and III (GBS-III) vaccines were assessed in Nile tilapia (Oreochromis niloticus). The fish with an average weight of 34.45± 0.08 g were immunized by intraperitoneal (i.p.) injection with 4 different formalin-killed vaccines prepared from GBS-Ia (1x1010 CFU/mL), GBS-III (1x1010 CFU/mL), and combined GBS-Ia and GBS-III in an equal volume at final concentrations 1x1010 CFU/mL and 2x1010 CFU/mL in comparison with the non-immunized control group. At 2 and 4 weeks post vaccination, no significant differences were observed (p>0.05) among treatments in growth performance or haemato-immunological parameters, except the increased red blood cell at 2 weeks. Significantly increased antibody titers (p
ISSN:0125-3395
DOI:10.14456/sjst-psu.2017.47