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In ewes and ewe-lambs, in combination with PMSG (Pregnant Mare Serum Gonadotrophin).

• Induction and synchronisation of oestrus and ovulation (non-cycling ewes during seasonal anoestrus ewe-lambs).
• Synchronisation of oestrus and ovulation (cycling ewes and ewe-lambs).
  

Dosage and administration

The dose is one sponge per animal irrespective of body weight, breed, type and season. 

The sponge is inserted intra-vaginally using an applicator.

It should remain in place for 14 days. At the end of this period, Chronogest CR is gently removed by pulling on its string.

To obtain an optimal synchronisation of ovulation, an injection of PMSG (range 300-700 i.u.) is administered (i.m.) at the time of sponge removal. 

In the case of fixed time AI, insemination at 55 hrs. after sponge removal is recommended.