The Time Course of Embryonic Resorption in the Ewe

Abstract

Groups of ewes were autopsied at intervals after colchicine· induced embryonic death, or at the time of return to service. Pregnant ewes treated with colchicine on days 13, 15, 17, and 19 returned to service after intervals of 7·0, 10·3, 18·2, and 21·0 days respectively.