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Old Jun 21st 2014, 09:20 AM   #1
  Dec 2013

I am looking to do AI for the first time this year. I will do LAP AI.

looking for advice on how to use my straws. I hear people say they split their straws 3 or even 4 times. Not sure if i want to do that, maybe 3 i guess, but want to make sure that if I'm spending the money to LAP AI, i do get them bred..


When it comes to semen count or post thaw % what is "safe" for splitting a straw twice? three? or four times?


For example,, i have a 3 straws thats packed 50 million

1) is 45-50% post thaw*

2) is 60% post thaw

3) is 70% post thaw (not sure but it is said to be rated excellent)


How would i be able to use these straws?


Thank you


tom'sdream is offline  
Old Jun 21st 2014, 04:51 PM   #2
  Apr 2009
  Williamsport, PA

A couple things to consider


#1) motility is a factor. you will need to look into this further.


#2) here is some quick math for you. Lets say you have excellent motility, a straw packed at 50 mil. with a 70% post thaw will give you a starting point of 35 mil. If you would shoot for lets say 8-10 mil. sperm per doe on frozen semen, which I believe is a good number, you could breed 4 does pretty comfortably.


I will say that some semen is better than others and I would ask for a post thaw evaluation with your straw(s) just to look at how the semen is preforming at 4, 6 12, and 24 hours.


Just remember It only takes one or two of those little guys to get the job done. Maybe one of the AI techs on here has another opinion for you. Best of luck!
Josh is offline  
Old Jun 21st 2014, 05:52 PM   #3
 IndependenceRanch's Avatar
  Apr 2009
  Edgar, WI

Cervid: deer
Josh gives you good info. The stats associated with a semen collection are important. Just a thought for you to consider also is what did you pay for the straw. Now most would say the more you pay the more times you should split the straw. Of course only as many times as an expert says based on the info mentioned above. But now that semen prices have fallen to a more modest level I want to put a different spin on it. If a person doesn't pay a lot for a straw my thinking is why bother splitting it at all. Increase the odds of success, much simpler for the techs and simpler for the breeder because they don't have to pair up does during AI. Just a thought.
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Old Jun 22nd 2014, 09:03 AM   #4
 Bell's Avatar
  Apr 2014
  Greensburg, IN
Many AI techs recommend different protocols for synchronization. Every doe ovulates slightly differently even when synchronized. If you keep exact records of the times you synchronized each one eventually you can get them all to breed by the AI. If a doe misses you may have to move her AI time slightly forward or backward in future breeding seasons. It is so important that semen still has good motility after four to six hours post thaw to achieve a high conception rate. Semen may have 90% motility 20minutes post thaw but can degrade very fast after a short time if handled improperly prior to freezing.

Jack did a great job explaining this and how the acrosome degrades under the "semen straws and guarantees" topic. Whomever does your LAP should have three cradles available to put your doe in side by side once they have been sedated.
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Old Jun 22nd 2014, 09:03 AM   #5
  Dec 2013

Thanks you Josh


I have the info on the straws and its the % listed above,

So at 60% which will end up being around 30 million I should be comfortable to split it 3 ways then. Thats what i was wondering is what post thaw amount is "safe"?

The 8-10 million per doe is what i was wondering. Thanks

and if anyone else would weigh in on what they use that would be awesome.


Thank you Roger

I wasn't even thinking about how you would need to consider having all 2-3 does ready to AI at the same time (never did AI before) so that gives me something to think about.

I would like to split it twice or three times as I've paid between $800-1500/straw. not much for some but for a guy still in college and paying tuition its a lot to invest.
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Old Jun 22nd 2014, 09:05 AM   #6
  Dec 2013

Thanks Bell, ill have to check it out
tom'sdream is offline  

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