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US 5,817,320 AGranted
In ovo immunization of avian embryos with oil-emulsion vaccines
AssigneeThe United States of America as represented by the Secretary of Agriculture
InventorHenry D. Stone
Life of this patent
Estimating the term…
Abstract
Avian diseases, particularly those which threaten birds early in life, are controlled by embryonal vaccination using water-in-oil-in-water emulsion vaccines. The site of inoculation is the albumin end of the egg via entry through the air cell end of the egg.
Claims7
A method for in ovo immunization of an avian species comprising
- puncturing an egg of said avian species with a puncturing means at the longitudinal midline over said egg's air cell in order to administer a water-in-oil-in-water emulsion vaccine in said egg's albumin end, injecting said water-in-oil-in-water emulsion vaccine into the egg by vertically inserting a needle means through said air cell to the albumin end,
- administering said vaccine into the albumen end of the egg, and
- hatching said egg to obtain an immunized avian species.
Dependencies are inferred from the claim text.