I find it hard to belive that they still use surgery insemination with frozen sperm!!. Overhere they use camera optic fiber work there way in and go direct into the uterus and place the sperm direct on top of the ovulating egs.
They only need 1 to 2 ml/cc of sperm for a practically100% garenty for the bitch to get pregnand. They also insiminate just at the START of ovulating and not when its at the higest point!!!. sins the start of the ovulation the % of sucses will only in crease as more and more egs wil ripe out .
where insiminating a bitch at the higest level of progestorone willl decrease the% of a sucsesfull insimination. as the firtility will drop of from that point. And sins sperm lives upto 36 hours. the new way is to insiminate at the START of ovulation. We just insiminate a 6 year old bitch for her first litter with 1 cc sperm . and she diliverd 6 pups..