We are introducing a 4 year old quarter horse stallion this year. He bred two mares in early February but they did not catch. One was a 3 year old maiden mare and the other a 14 year old maiden mare (bred again in March-didn't catch then either). Both mares were given a clean uterine exam. Granted, breeding maiden mares may not be a good measure to use and it may have been too early in the breeding season, but we're concerned over his fertility. We are currently waiting to see if two proven producing mares have caught in foal. We have heard conflicting views that it takes time for a stallion to produce viable sperm (spermogenesis - about 60 days) and then again some opinions stating only a few days. Our vet isn't worried about his fertility and says it may take a few mares to get things going. We breed by live cover, breeding every other day beginning at onset of heat and daily at standing heat since we don't want to chance missing ovulation. We have not been trained to palpate and don't have access to a sonogram unless the vet makes a farm visit. Our stallion has no problem mounting or ejaculating. We breed during the evening since it fits in with our work schedule and mares are said to ovulate during the 4pm-8am time frame. The mares are also more relaxed during the evening. We plan to ultrasound these two mares around 20 days if no heat is present. It's a long sleepless wait. Does anyone have any guidance, suggestions, advice, etc?
This is the first year we bred my coming 5 year old stallion. He has bred 3 mares all in foal two maiden.. I am shipping T/S so I had his sperm evaluated.. It cost me 125.00 but we trained him to the phantom.. very acceptable,and got the perfect extended and saw them healthy and swimmign. I would say that you take him in if mares are not in foal. Each mare we bred ultrasounded in 16 days in foal. I do not breed at the first sound of heat I wait 2 days until they are standing and then breed everyother day.. Semen is viable for 24 -48 and the motility is high then so you wouldn't miss an ovulation if you did every other day during standing heat..
Good Luck Sammie
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