The effect of feed-based vaccination on tilapia farm endemic for streptococcosis

A tilapia farm experiencing endemic streptococcosis was selected to study the effect of vaccination with a feed-based vaccine on naturally ocurring streptococcosis. A total of 9000 red tilapia, Oreochromis niloticus × Oreochromis mossambicus of 100 ± 20 g were divided into 9 cages. Fish of Group 1 i...

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Bibliographic Details
Published in:Fish & shellfish immunology 2017-01, Vol.60, p.21-24
Main Authors: Ismail, M.S., Syafiq, M.R., Siti-Zahrah, A., Fahmi, S., Shahidan, H., Hanan, Y., Amal, M.N.A., Zamri Saad, M.
Format: Article
Language:English
Subjects:
Animal Feed
Animals
Cichlids
Efficacy
Endemic farm
Feed-based vaccine
Fish Diseases - microbiology
Fish Diseases - prevention & control
Fisheries
Hybridization, Genetic
Streptococcal Infections - microbiology
Streptococcal Infections - prevention & control
Streptococcal Infections - veterinary
Streptococcal Vaccines - administration & dosage
Streptococcal Vaccines - immunology
Streptococcosis
Streptococcus agalactiae - immunology
Tilapia
Vaccination - veterinary
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Summary:A tilapia farm experiencing endemic streptococcosis was selected to study the effect of vaccination with a feed-based vaccine on naturally ocurring streptococcosis. A total of 9000 red tilapia, Oreochromis niloticus × Oreochromis mossambicus of 100 ± 20 g were divided into 9 cages. Fish of Group 1 in cages 1, 2 and 3 were not vaccinated. Group 2 in cages 4, 5 and 6 were vaccinated on days 0 and 14 (single booster) while Group 3 in cages 7, 8 and 9 were vaccinated on days 0, 14 and 42 (double booster). Vaccination was done by oral administration of the feed-based bacterin vaccine at 4% bodyweight. Samples of serum for antibody study and the brain, eyes and kidney for bacterial isolation were collected at 14-day intervals. The study was carried out during the critical months between April and June. Following vaccination and booster, there was significant (p 
ISSN:1050-4648
1095-9947
DOI:10.1016/j.fsi.2016.11.040