Volume 16, Issue 1 (Spring 2024)
3 2024, 16(1): 56-74 |
Back to browse issues page
Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
Alishahi M, Alizadehnia P, Khosravi M, Mohammadian T, Moftakhar P. Improvement of Immunogenicity and Efficacy of Oral Streptococcus agalactiae Vaccine in Tilapia (Oreochromis niloticus) Using Antigen Microencapsulation Technique. 3 2024; 16 (1) :56-74
URL: http://jmb.ahvaz.iau.ir/article-1-1035-en.html
URL: http://jmb.ahvaz.iau.ir/article-1-1035-en.html
Department of livestock, poultry and aquatic animals Health, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
Abstract: (29 Views)
In this study the effect of microencapsulation of Streptocuccus agalactiae vaccine with alginate/chitosan on some growth indices, hematological parameters and immunogenicity of Nile tilapia (Oreochromis niloticus) was investigated. Three hundred and sixty juvenile tilapia (30±2.32 g) were randomely divided into four groups in triplicates: groups 1 and 2 were immunized with microencapsulated S. agalactiae and naked vaccine respectively, group 3 was treated with Alginate /chitosan and group 4 was fed with basal food without additive as control. Fishes were reared for two months in similar situation and biometrical measurement recorded every month , then blood samples were taken from each group at days zero, 30 and 60 of experiment. Hematological parameters were measured and compared among the groups. Remained fish in aech groups were challenged with S.agalactiae in day 60 0f experiment and cumulative mortality were recoreded for 14 days. Results showed that growth performeance indices including FCR, SGR, FER and PGR were significantly improved in groupe 1 which orally vaccinated with microencapsuldted vaccine compare to control group (P<0.05). Among the hematological parameters, just WBC value significantly increased in microencapsulated vaccine treated group (P<0.05). other hematological parameters didn’t show any significant difference among the experimental groups (P>0.05). The lowest mortality after challenge with S.agalactiae was recorded in group 1 with 50% cumulative mortality which is significantly (P<0.01) different with mortality in control group (95%). Then it can be concluded that microencapsulation of S. agalactiae oral vaccine with Alginate/chitosan, not only stimulate growth indices, but also increase resistance against bacterial infection in Nile tilapia (Oreochromis niloticus).
Keywords: Oral Vaccine, Streptocucus agalactiae, Nile tilapia (Oreochromis niloticus), microencapsulation
Type of Study: Applicable |
Subject:
Special
Received: 2025/08/23 | Accepted: 2024/04/29 | Published: 2024/04/29
Received: 2025/08/23 | Accepted: 2024/04/29 | Published: 2024/04/29
Send email to the article author
| Rights and permissions | |
 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
