New diagnostic test helps identify open cows sooner

New diagnostic test helps identify open cows sooner

TROY Ott, professor of reproductive physiology in the College of Agricultural Sciences at Pennsylvania State University, is developing a blood test dairy farmers and livestock veterinarians can use to tell whether a cow failed to conceive after insemination.

Ott's test -- patented in the U.S. and nine other countries -- will aim to provide farmers with this important information 18-20 days after a cow has been inseminated, which is 10-20 days earli

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