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How long does frozen last?

Equine-Reproduction.com Bulletin Board » Frozen Semen » How long does frozen last? « Previous Next »


Author Message
 

Vivian Drynan
Neonate
Username: Vivianco

Post Number: 1
Registered: 11-2007
Posted on Thursday, November 22, 2007 - 12:28 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Hi, I've been thinking about collecting then gelding my boy. I have plenty of time to decide what I'm going to do, he's not even 2 yet. I just want to learn everything I possibly can so that I can make the best decision possible. Many thanks in advance. :-)
 

Marilyn Lemke - Dora due 7/31/08
Breeding Stock
Username: Marilyn_l

Post Number: 470
Registered: 06-2007
Posted on Thursday, November 22, 2007 - 09:00 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Vivian, I noticed this is your first post. Welcome to the board. I'm happy to see you posting.

I've heard that frozen semen lasts about 4 to 6 hours inside the mare. It depends on the stallion's potency. You have to be very timely when insemiating the mare. It's not the easiest method, but it does work if done correctly.

I've never used this method before. I gathered this information when I was searching for stallions.

I wonder if you can freeze it in your own freezer or does it need to be colder? Does anyone know the answer to this question?

Thanks in advance. Marilyn
 

Jos
Board Administrator
Username: Admin

Post Number: 1632
Registered: 10-1999
Posted on Thursday, November 22, 2007 - 10:11 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Frozen semen will be viable for an estimated 10-50,000 years (yup, ten to fifty thousand!) if stored correctly, and assuming it was viable in the first place. Realistically, there have been pregnancies established with semen that was 15+ years old (the thousands of years estimate was established in the lab. by exposing semen to certain levels of radiation and other techniques).

Frozen semen in the mare is viable for about 12-16 hours, not 6 :-). There are of course individual stallion variations, but generally the intent should be to inseminate the mare no greater than 12 hours before or 6 hours after ovulation. There are timed insemination techniques that make getting the timing right a lot easier (follow that link for details).

Semen is frozen in liquid nitrogen which is at minus 320° F (-196° C) which is probably a little colder than your home freezer... :-) There's an article about freezing semen available on the site (follow that link too for the article!).

There is also a frozen semen FAQ on the web site that might be of assistance in answering some of the questions too.
 

Marilyn Lemke - Dora due 7/31/08
Breeding Stock
Username: Marilyn_l

Post Number: 472
Registered: 06-2007
Posted on Thursday, November 22, 2007 - 11:23 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Thank you Jos for correcting me. I would hate to misinform anyone here. I guess I have more reading to do.

I appreciate all the efforts you make, Jos, in helping us make better decisions regarding the breeding process.

Marilyn
 

Vivian Drynan
Neonate
Username: Vivianco

Post Number: 2
Registered: 11-2007
Posted on Thursday, November 22, 2007 - 10:08 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Thank you. Can't believe it could last that long. Amazing. I'm a long time reader, first time poster. Really hoping my boy will make it to stallion-hood. So I'm trying to learn anything and everything breeding related.
 

Mary Barrett
Yearling
Username: Twinlights

Post Number: 56
Registered: 02-2007
Posted on Tuesday, February 05, 2008 - 03:03 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I collected my horse then had him gelded. That was 13 years ago. He has a lovely yearling son now. The mare took on first cycle, and one straw.
Yup, lasts indefinately.
 

Adriana Angelich
Neonate
Username: Faluut42

Post Number: 7
Registered: 02-2008
Posted on Friday, March 07, 2008 - 06:59 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

A mare was bred in germany successfully with 30 year old semen.

As long as the semen is stored correctly, it should last forever.
 

Darkhorse 2572
Neonate
Username: Darkhorse2572

Post Number: 4
Registered: 03-2009
Posted on Saturday, July 25, 2009 - 08:11 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

We had a successful pregnancy using 18+ yr old frozen semen from Germany as well... And have a gorgeous colt to show for it! :-)



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