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Calculating semen via Quick Check Jr.

PostPosted: Thu May 09, 2013 2:32 pm
by smoky
We just bought the Quick Check Jr. The first time we used it, it showed that we had a 918 mil/ml concentration and needed a 1.1 ml raw semen to 23 ml of extender for an ID.

Today we used it and it again said a 980 mil/ml concentration but for the ID it gave us 6.8 ml semen and 34 ml of extender. We ran it several times and it stayed pretty consistent.

Why is there a variance? I can't figure out where they even got that calculation for the ID. Why would we need that much semen when it is already close to that 1 Bil in just 1 mil?

Do most people just use the concentration based on the Quick Check JR and then figure out their own ID dose instead of relying on the QC?

Re: Calculating semen via Quick Check Jr.

PostPosted: Sat Dec 28, 2013 8:28 pm
by Chris
Maybe the device needs to be re-cailbrated perhaps?

Re: Calculating semen via Quick Check Jr.

PostPosted: Sat Dec 28, 2013 10:37 pm
by Jos
Can't answer your question specifically, but would suggest you contact Exodus Breeders (contact info) and ask them, although - just a thought - doesn't that model have an input setting for progressive motility? If that was somehow adjusted (possibly accidentally?) for the second reading - say it was at 100% for the first reading, but 15% for the second one - that would work out about right.

FWIW, I have always taken the concentration and done my own calculations, no matter what, as I like to look fulfil final concentration, dilution rate and number of sperm shipped parameters and most of the "mechanical" calculators will typically only work using one or two of those, not all three. Having said that, if you take a look at our on-line semen calculator, you will see that it does make use of all three parameters.

As a final note - I have a little bit of a concern about the high concentration. Not impossible of course, but what was the motility of this boy's ejaculates? When it gets that high I get concerned that I might be dealing with an "accumulator" (spermiostasic) stallion... :shock: