MAIN PAGE
EQUINE REPRODUCTION ARTICLES
SHORT COURSES
OTHER SERVICES AVAILABLE FROM EQUINE-REPRODUCTION.COM
FROZEN SEMEN STALLIONS
CERTIFIED SEMEN FREEZING LOCATIONS
EQUINE REPRODUCTION SUPPLIES
EQUINE REPRODUCTION BOOKS
EQUINE REPRODUCTION LINKS
EQUINE REPRODUCTION E-MAIL LIST
EASILY CALCULATE THE CORRECT VOLUME OF SEMEN AND EXTENDER TO SHIP OR USE ON FARM!
EQUINE REPRODUCTION BULLETIN BOARD
SITE MAP OF EQUINE-REPRODUCTION.COM
CONTACT US

horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
Go to the articles page
 
Equine-Reproduction.com Bulletin Board
 
Topics Page Topics Page Register for a new account Register Edit Profile Profile Log Out Log Out Help/Instructions Help    
New Posts New Posts Last 1|3|7 Days Search Search Tree View Tree View  
Posting is restricted to registered board members only to prevent spamming of the board. We regret the necessity of this action, but hope you will appreciate the importance of the integrity of the board. Registration is free and information provided during the process will not be submitted to third parties.

Progesterone levels early pregnancy - Educate me :-)...

Equine-Reproduction.com Bulletin Board » Breeding Problem Mares - Volume 2 » Progesterone levels early pregnancy - Educate me :-) « Previous Next »


Author Message
 

Jessica
Neonate
Username: Spike

Post Number: 9
Registered: 11-2006
Posted on Sunday, July 17, 2011 - 03:15 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I've went to see on other threads with "progesterone level" as title, but didn't found all the infos I was looking at.

I would like to know, when you have a mare that is deemed by the vet as at a "low progesterone level"... What does that means? What is a LOW level compared to a NORMAL level, and what is like, the dangerous range?

Is 4.9 ng/ml scary enough to have the mare stay at the vet's clinic and avoid transporting her back home? For how long can it stays that low? Can it stays forever at that level?

What is to be done to solve this problem? Treatment? Medication? Hormonal treatment? Wich products are commonly used with success. I know of Regu-Mate but is there more agressive treatments available?

Is it reccurrent? If a mare has a low progesterone level once, will she be always low each subsequent pregnancy?

If the mare has to be shipped let's say... 4hrs drive. At what level would you consider it safe to have the mare transported, assuming that she is more than used to trailering and travels pretty well usually?

What can interfere with natural progesterone production? Environnement? Nutrition? Travelling?

Thanks!
 

Jos
Board Administrator
Username: Admin

Post Number: 3356
Registered: 10-1999
Posted on Sunday, July 17, 2011 - 05:49 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Take a look at the article on our site about Regumate use, which should answer a lot of your questions (follow that link).

The short answer to the question "what are low progesterone levels?" is... we don't know! 4 ng/ml is used as a "low" threshold by many (which means that your 4.9 is totally adequate); while other researchers have reported pregnancies happily maintained on levels down to around 2 ng/ml.

On top of that, as with most hormones in the body, a single sample will not necessarily give you a complete overall profile, as testing again 3 hours later is quite likely to give you a higher or lower reading, as levels vary throughout the day and night. Multiple tests over several days are therefore recommended to give an accurate profile.

The progesterone level would be less of a concern when shipping - particularly with a 4.9 reading - than ambient temperature, as excessively high temperatures during the early embryonic period have been linked to a higher pregnancy loss rate. Increasing that temperature within a hot trailer could therefore spell more trouble than a borderline progesterone level could (which, again, your mare at 4.9 ng/ml does not have!).

Finally, after all of that preamble, you don't identify at exactly what stage of "early pregnancy" your mare is! Progesterone levels will drop to a low point around 15 days post-conceiving-ovulation and then start to rise again, so that may play a part in your levels as well.
 

Jessica
Neonate
Username: Spike

Post Number: 10
Registered: 11-2006
Posted on Sunday, July 17, 2011 - 08:57 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

She would be 40 days today...

So if you had a mare with an average of 4.8-4.9ng/ml you would'nt be that concerned? Would you put her on a special treatment - apart from ReguMate? If so, what would it be?

(Message edited by spike on July 17, 2011)

(Message edited by spike on July 17, 2011)
 

Jos
Board Administrator
Username: Admin

Post Number: 3357
Registered: 10-1999
Posted on Sunday, July 17, 2011 - 10:05 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Wouldn't be concerned. We breed a huge number of outside horses here (as well as our own), have excellent pregnancy rates, and have maybe one or two mares a year that get put on progestin supplementation - and that will be because they have a known issue such as a torn cervix or something like that.



Please note that opinions, product information, advice or suggestions posted on this bulletin board are not necessarily those of the management at Equine-Reproduction.com nor does the maintenance of the post position indicate an implicit or any endorsement of that information, opinion or product.

Further, although we have the greatest respect for the posters offering assistance here, you are advised to seek a consultation with your veterinarian prior to using information obtained from this board if it is of a veterinary nature.

Proud to be sponsored and supported by:
IMV Technologies - makers of Equine AI Equipment
Equine A.I. Equipment Supplies
Universal Medical Systems Ultrasounds
For your Veterinary Ultrasounding Needs
Hamilton Research Inc - Home of the Equitainer
Hamilton Research Inc - Home of the Equitainer
Exodus Breeders Supply - Your one-stop shop for all your reproductive needs!
Exodus Breeders Supply
Har-Vet: An Industry Leader in Equine Veterinary Products
An Industry Leader in Equine Veterinary Products!
Reproduction Resources: Specializing in Artificial Breeding and Embryo Transfer Supplies
Specializing in Artificial Breeding and ET Supplies
BET Pharm: Your Compounding Pharmacy for Reproductive Needs!
Your Compounding Pharmacy for Reproductive Needs!
www.SemenTanks.com - Quality Tanks at Competitive Prices!
Quality Tanks at Competitive Prices!
J.L. Smith Co. - Safe, affordable breeding stocks!
Safe, affordable breeding stocks!
  International Veterinary Information Service
International Veterinary Information Service
 

MAIN PAGE | INFORMATIONAL ARTICLES | SHORTCOURSES | SERVICES
FROZEN STALLIONS | FREEZING LOCATIONS | SUPPLIES | BOOKS | LINKS
EQUINE REPRODUCTION E-MAIL LIST | SEMEN CALCULATOR | BULLETIN BOARD
SITEMAP | CONTACT US