*** Welcome to piglix ***

Progesterone-releasing intravaginal device


Intravaginal progesterone devices are broadly used in the control of reproductive management in cattle. The chain-mechanism of action is as follows:

Protocol – PRID for 9 days. PGF2α injection on days 5–8. Serve on observed oestrus or fixed time once at 56h or twice at 48h and 72h.


...
Wikipedia

...