An observant teasing manager, an effective teaser and a safe, efficient teasing system are the bases for accurate heat detection in the mare. These factors, combined with a thorough knowledge of sexual behavior in mares and a detailed set of records are necessary for a successful breeding season. Pregnancy rates in mares are the lowest of any domestic animal. Only about one half of all mares bred will become pregnant and foal the next year. Pregnancy rates can increase substantially if managers can do a better job of heat detection in mares. Accurate teasing records, combined with rectal palpation or ultrasound, are management tools to increase the reproductive efficiency of the mare.
"TNH1000-Heat Detection and Teasing Systems for Mares," The University of Tennessee Agricultural Service, TNH-1000 1/03 E12-4415-00-027-03, http://trace.tennessee.edu/utk_agexani/19