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Prostagalandin to resolve AHF

Equine-Reproduction.com Bulletin Board » Breeding Problem Mares - Volume 1 » Prostagalandin to resolve AHF « Previous Next »


Author Message
 

Michele
Neonate
Username: Mich

Post Number: 5
Registered: 02-2006
Posted on Monday, February 27, 2006 - 01:13 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Is there a 'scientific' explanation as to how a shot of prostaglandin will get rid of a 10cm AHF? What does it actually do to the follicle? {I understood that this isn't always successful}

What exactly is the protocol in using the prostaglandin, and then giving Chorulon to induce ovulation within 48hrs?

Also, can she ovulate and get in foal even if the AHF follicle doesn't resolve after the prostaglandin jab, if another follicle does ovulate and get fertilised?

It's getting late in the season and I'm pretty desperate to get this mare in foal before another year goes by.
Thanks
 

Jos
Board Administrator
Username: Jos

Post Number: 10480
Registered: 10-1999
Posted on Monday, February 27, 2006 - 11:05 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Reading the article on this site about AHF's will answer some of your questions.

About 85% of AHF's develop luteal tissue, and will therefore resolve with PGF2a. You would use a standard dose of the drug, such as would be used to induce estrus, or the double micro-doses that is also used to induce estrus.

hCG is given when a 3.5 cm follicle is present, and ovulation will occur within 48 hours in around 80% of mares.

If the AHF does not develop luteal tissue, it will not respond to PGF2a, and if that is the case, it is quite likely that the mare will not return to estrus until that AHF has resolved - typically 60-90 days.



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