Several people e-mailed privately to request a ref. for Bovine IgG and colic
in breastfed infants. I'll just post to the list to save time. P.Clyne and
A. Kuczycki: Human milk contains bovine IgG. Relationship to infant colic?
Pediatrics 1991, 87(4):439-444.
Salient points: Bovine IgG has been found to be antigenic in humans.
Mothers of colicky babies had higher levels of bovine IgG in their milk than
the 30 mothers of non-colicky babies in the control group.
Bovine IgG has a prolonged half life. Short elimination trials of 2-7 days
may not clear all the protein from mother's milk.
Barbara Wilson-Clay, BSE, IBCLC
Austin (priv. pract)