Determining the pregnancy status of a ewe is an important management practice, providing vital information to help move your flock forward. Determining if a ewe is open or pregnant helps you rebreed open ewes quickly or cull open ewes at the best financial time. To prevent this cost to the flock, producers are encouraged to pregnancy check their ewes each breeding season. There are several methods to determine the pregnancy status of a ewe. Each method has its own positives and negatives associated with use.