| I.P Abstract & Summary |
The present invention relates to a method for producing a serum including protective antibodies having mucosal immunity which can protect against infection by mucosa-related infectious pathogens, the method comprising a step for administering mucosa-related infectious pathogens to mature swine and bovine via a mucosal route to induce, from the mature swine and bovine, the production of protective antibodies having mucosal immunity which can protect against infection by mucosa-related infectious pathogens; and a method for protecting young piglets and calves from infection by infectious pathogens, or treating young piglets and calves infected thereby, by administering the serum produced by the method to newborn or young piglets and calves. Infection of young piglets and calves by mucosa-related infectious pathogens can be prevented and treated by the method according to the present invention. |
