A field study of the fertility of transported equine semen.
A field trial of artificial insemination in horses with transproted, chilled semen was conducted using a specially designed container which permitted a controlled, slow initial rate of cooling (-0.3 degrees C/min) and maintenance of a final temperature of 4 degrees -6 degrees C for more than 36 hrs. Forty-six mares in 23 states were inseminated with semen from three German Warmblood stallions standing at stud in Hamilton, Massachusetts. A third-cycle conception rate of 91% was obtained.
Douglas-Hamilton
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Hamilton Research Laboratory Inc, 729 Cabot St, Beverly, Mass 01915 USA.
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Osol
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Driscoll
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Noble
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