Evaluating Semen Quality

Stallion owners must determine if their stallions have what it takes physically to make a good breeding prospect, including good semen quality, before the start of the breeding season. In his presentation at the sixth annual Equine School at the Alltech Symposium, Peter Sheerin, DVM, Dipl. ACT, a theriogenologist at Rood and Riddle Equine Hospital in Lexington, Ky., asked the audience: “What

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Stallion owners must determine if their stallions have what it takes physically to make a good breeding prospect, including good semen quality, before the start of the breeding season. In his presentation at the sixth annual Equine School at the Alltech Symposium, Peter Sheerin, DVM, Dipl. ACT, a theriogenologist at Rood and Riddle Equine Hospital in Lexington, Ky., asked the audience: “What is good semen quality?”

“One definition of good semen quality is an ejaculate that contains a high population of normal sperm cells that provides a normal rate of fertilization (80-90%),” he said. However, he noted that pregnancy rates don’t indicate fertility rates because of the high occurrence of early embryonic loss in the mare

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Sarah Evers Conrad has a bachelor’s of arts in journalism and equine science from Western Kentucky University. As a lifelong horse lover and equestrian, Conrad started her career at The Horse: Your Guide to Equine Health Care magazine. She has also worked for the United States Equestrian Federation as the managing editor of Equestrian magazine and director of e-communications and served as content manager/travel writer for a Caribbean travel agency. When she isn’t freelancing, Conrad spends her free time enjoying her family, reading, practicing photography, traveling, crocheting, and being around animals in her Lexington, Kentucky, home.

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