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Estrus Synchronization Protocols for Heifers

Estrus Synchronization Protocols for Heifers

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CO-Synch + CIDR w/ TAI at 54h vs<br />

CIDR Select w/ TAI at 72h<br />

CO-Synch + CIDR<br />

GnRH<br />

PG<br />

AI<br />

CIDR (7 d)<br />

GnRH<br />

0 7 …... 54h<br />

CIDR Select<br />

CIDR (14 days)<br />

GnRH<br />

.. .. 9 days .. .. .. .. 7 days .. ..<br />

PG<br />

AI<br />

GnRH<br />

0 14 23 30.........72h<br />

Treatment day<br />

Busch et al., 2007

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