a1 Department of Animal Husbandry, University of Bristol School of Veterinary Science, Langford House, Langford, Bristol
Colostral whey protein levels do not change during the first 4 hr from the start of parturition when suckling is prevented. Both early and late-born piglets returned to the sow at the end of this period are able to suck colostrum of a high protein concentration. Removal of piglets from the sow and the presence of an attendant did not affect the farrowing process.
(Received December 16 1968)