| abstract |
A composition useful in oral immunisation of animals such as poultry comprises dry free-flowing particles each consisting of a solid beadlet of lipid-continuous emulsion containing from about 25% to about 50% by weight water in a lipid, such as hardened palm kernel oil, having a slip point in the range 35° to 45° C., each beadlet having an average diameter of about 2 to 3 millimeters and containing at least 1 viable encysted protozoan, such as a sporulated oocyst of a species of coccidium infective to poultry, each beadlet having a protective coating of animal feed, cement and/or gypsum, the protective coating having an average thickness of about 0.2 to 2 mm. |