What is the primary use of a twitch in equine handling?

The primary use of a twitch in equine handling is to calm and restrain the horse. A twitch is a device that applies pressure to the horse's upper lip, which can help to distract the animal from stressful situations, thus reducing anxiety and tension. When used correctly, it elicits a calming effect that allows handlers to perform various procedures, such as routine examinations, grooming, or medical treatments, with a lower risk of injury to both the horse and the handler.

This calming effect is achieved because the skin of the upper lip is sensitive, and applying pressure there triggers the release of endorphins, which can help soothe the horse's nerves during potentially stressful scenarios. The twitch is not intended for encouraging movement, administering medication, or measuring weight, as these tasks require different handling techniques or equipment designed for their specific purposes.