Using the Ovsynch protocol to prepare
cows for re-insemination proved to be very
effective. Its use guarantees that all cows
found open at pregnancy diagnosis are reinseminated
promptly within 10 days, and the
average pregnancy rate of 28.7% in 136 cows
was acceptable. Pregnancy rates were not
different whether or not estrus was detected
in cows at the timed insemination, but they
tended to be greater at second services compared
to other repeat services. The Ovsynch
protocol is an effective tool to use to ensure
prompt re-insemination of open cows.
