Live Foals. I know the mare has tons to do with the live foal rate. I was just curious to know what a good an average percentage is. In addition, how likely is a farm going to breed back to the mare that lost the foal. For example, Tiznow covered 76 mares in 2005. 52 prodiced live foals. I wonder how likely the farm will be willing to go back to those 24 mares who didnt produce a foal.