Disclosed and claimed is the use of a liquid jet intradermal administration
apparatus that administers a composition: without a needle; and in the
epidermis, dermis and/or hypodermis, such as a Pigjet apparatus, for
administering bovine vaccines or immunogenic compositions, especially
bovine plasmid vaccines or immunogenic compositions. Accordingly, the
invention involves bovine immunogenic or vaccine compositions in such an
apparatus, and methods for vaccinating bovines or for inducing an
immunogenic response in bovines employing such an apparatus, as well as
the apparatus containing bovine immunogenic or vaccine compositions.