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.

Ascertaining viability of frozen semen

Equine-Reproduction.com Bulletin Board » Frozen Semen » Ascertaining viability of frozen semen « Previous Next »


Author Message
 

Nicole Barrow
Neonate
Username: Pegasus

Post Number: 1
Registered: 07-2008
Posted on Sunday, July 20, 2008 - 05:34 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

How does one go about ascertaining the viability of equine semen frozen 8yrs ago, and would each evaluator thereof draw the same conclusions re the viability or would they interpret it differently?
 

Jos
Board Administrator
Username: Admin

Post Number: 2094
Registered: 10-1999
Posted on Sunday, July 20, 2008 - 10:30 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Really the only way to determine that frozen semen is fertile is to establish pregnancies with it. Motility most decidedly does not equate to fertility, and although there are other tests that may be suggestive of "good" semen, none are absolute relative to fertility. Obviously the more tests that return a "good" result, the more likely it is that it's good semen, but the bottom line is that to guarantee fertility one has to have established pregnancies...
 

Nicole Barrow
Neonate
Username: Pegasus

Post Number: 2
Registered: 07-2008
Posted on Monday, July 21, 2008 - 12:39 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Thanks Jos. When you say motility does not equate to fertility do you mean that just because sperm is very motile doesn't mean it's very fertile and vice versa, just because it's not particularly motile doesn't mean it's not fertile?
 

Jos
Board Administrator
Username: Admin

Post Number: 2097
Registered: 10-1999
Posted on Monday, July 21, 2008 - 08:58 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Correct, although the former tends to hold more true than the latter - if they're all non-motile, you're probably in trouble, although there are rare exceptions.
 

Nicole Barrow
Neonate
Username: Pegasus

Post Number: 3
Registered: 07-2008
Posted on Monday, July 21, 2008 - 12:37 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Thanks. When the vet checks it what will he be looking for / at?
 

Jos
Board Administrator
Username: Admin

Post Number: 2098
Registered: 10-1999
Posted on Monday, July 21, 2008 - 06:14 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

It will depend upon what the vet is checking for, the level of expertise, and the equipment available. If he is looking at a sample at the time of breeding, in a basic setting, the chances are that all he will be looking at is motility, which as we have already established, is shaky as an indication of fertility.

If they are evaluating a post-thaw sample following freezing, with moderate knowledge and equipment, then not only will motility be evaluated, but also possibly a stress (duration) test.

If in a more advanced knowledge/setting state, then not only the above, but also possibly Cybr-14/PI staining and/or a Sephadex steel wool swim-up evaluation.

As you can see, much is dependent upon the situation at hand, but remember that the only true indicator of fertility is a pregnancy... :-)
 

Nicole Barrow
Neonate
Username: Pegasus

Post Number: 4
Registered: 07-2008
Posted on Tuesday, July 22, 2008 - 02:11 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Ok thanks very much Jos, that helps a lot. I think basically the vet will just check if they're alive. There have been pregnancies from the same batch # about 6 yrs ago which should hopefully be a positive thing?
 

Jos
Board Administrator
Username: Admin

Post Number: 2099
Registered: 10-1999
Posted on Tuesday, July 22, 2008 - 09:33 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

As long as the semen has been stored correctly, and all things related to the breeding being equal, you should be good to go! :-)
 

Nicole Barrow
Neonate
Username: Pegasus

Post Number: 5
Registered: 07-2008
Posted on Tuesday, July 22, 2008 - 02:07 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Phew, hope so



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