<;P>;PROBLEM TO BE SOLVED: To provide a composition for promoting immunoglobulin absorption and a composition for adding to colostrum, which are given to a newborn of a mammal; and to provide methods for promoting absorption of immunoglobulin and for improving immunity of a newborn of a mammal other than a human being. <;P>;SOLUTION: Absorption of immunoglobulin contained in colostrum etc., can be promoted by giving the composition containing DFAIII and/or DFAIV to a newborn of a mammal by adding it to colostrum etc. The composition is safety and easy in using. <;P>;COPYRIGHT: (C)2009,JPO&INPIT