PMID: 3765339Jun 1, 1986Paper

Influence of route of administration on the humoral response of channel catfish (Ictalurus punctatus) to Yersinia ruckeri

Veterinary Immunology and Immunopathology
D A Neumann, M R Tripp

Abstract

Channel catfish were inoculated intraperitoneally, intramuscularly, or intraesophageally with Yersinia ruckeri. Three antigen doses were administered by each route of injection. Four fish from each treatment were sacrificed at 5-day intervals for 40 days. Serum from each individual was tested for antibody activity against Y. ruckeri by indirect enzyme-linked immunosorbent assay (ELISA). High titers of anti-Y. ruckeri antibody were elicited by all doses (10(5) to 10(9) cells/g of fish) regardless of the route of administration. Mean titers for saline injected fish ranged up to 1:64 for each route of inoculation while mean titers for bacteria injected fish ranged up to 1:4096. Mean titers of 1:128 or greater were observed by day 15 post injection; titers peaked about day 30 and diminished thereafter. Channel catfish were most responsive to the antigen (10(7) to 10(9) cells/g of fish) when administered intramuscularly although lower doses (10(5) to 10(6) cells/g of fish) administered intraperitoneally elicited a substantial response. There was little evidence of dose-dependent responses for any of the routes of immunization. The rapid onset of relatively high serum titers suggests that the fish were mounting a secondary response t...Continue Reading

References

Jan 1, 1979·Transactions of the Royal Society of Tropical Medicine and Hygiene·M L McLarenJ E Lillywhite
Mar 1, 1975·The Journal of Experimental Zoology·K Sailendri, V R Muthukkaruppan
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