Absorption of Anti-Nematode Antibodies from Ewe's Colostrum by the New-born Lamb

DURING experimental work on helminth immunity, it was observed that the sera of month-old worm-free lambs gave positive reactions for anti-nematode antibodies. When this observation was made, all the available ewes but one had lambed. A small-scale test was made to determine whether antibodies to parasitic nematodes could be detected in the colostrum of nematode-infected ewes and whether their offspring acquired these antibodies as a result of suckling.