1. Bourne, F. J. & J. Curtis: The transfer of immunoglobulins IgG, IgA, and IgM from serum to colostrum and milk in the sow. Immunology 1973, 24, 157–162.
2. Brambel, F. W. R.: The Transmission of Passive Immunity from Mother to Young. North-Holland, Amsterdam 1970, p. 166–196.
3. Carlsson, L. C. T., B. R. Weström & B. W. Karlsson: Intestinal absorption of proteins by the neonatal piglet fed on sow’s colostrum with either natural or experimentally eliminated trypsin-inhibiting activity. Biol. Neonate 1980, 38, 309–320.
4. Hardy, R. N.: The break-down of (131I) γ-globulin in the digestive tract of the new-born pig. J. Physiol. (Lond.) 1969, 205, 435–451.
5. Jensen, P. T.: Isolation and immunochemical determination of sow colostrum trypsin inhibitor. Acta path, microbiol. scand. Sect. C. 1977, 85, 441–448.