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Optimum Concentration of Edwardsiella ictaluri Vaccine in Feed for Oral Vaccination of Channel Catfish
Author(s) -
Plumb John A.,
Vinitnantharat Somsak,
Paterson W. D.
Publication year - 1994
Publication title -
journal of aquatic animal health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.507
H-Index - 52
eISSN - 1548-8667
pISSN - 0899-7659
DOI - 10.1577/1548-8667(1994)006<0118:ocoeiv>2.3.co;2
Subject(s) - edwardsiella ictaluri , catfish , ictalurus , biology , vaccination , fish <actinopterygii> , zoology , titer , veterinary medicine , microbiology and biotechnology , fishery , antibody , virology , immunology , medicine
Channel catfish Ictalurus punctatus that were 1 year old and averaged 11.6 g each were stocked into 0.43‐m 3 cages and fed a sinking feed that was 0.0, 0.001, 0.01, 0.1, 0.5, 1.0, or 10.0% killed, dehydrated, and coated Edwardsiella ictaluri bacterin. The fish were fed vaccine feed for two 5‐d periods separated by a 10‐d feeding period with nonvaccine feed. Three months later there were no differences among agglutinating antibody titers in the serum of nonvaccinated controls and the vaccinated fish. Fish in each treatment group were then challenged with virulent E. ictaluri . The resulting survival of control fish (23.3%) was significantly (P < 0.05) different from the 50.0, 46.7, and 60.0% survival offish receiving 0.001, 0.01, and 0.1% vaccine feed, respectively, and was highly significantly different (P < 0.01) from the 70.0, 76.7, and 73.3% survival in fish fed the vaccine at dietary concentrations of 0.5, 1.0, and 10.0%, respectively.