Diestrus begins about 24 to 48 hours after ovulation. Diestrus lasts an average of 14 to 16 days. During diestrus, the mare rejects the stallion with behavior typically seen in the form of tail switching, squealing, striking, biting, and/or kicking.
Partners

Originated from the American Youth Horse Council's
Horse Industry Handbook
The umbrella organization providing leadership and resources for the youth horse industry.
1-800-TRY-AYHC

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