That's a good point. I'd said "race horses" without really thinking, might have been high dollar thoroughbreds but can't be within the racing industry; I looked it up and yeah, it's a no-no withe Jockey Club, despite the fact that the intended dam can be bred live cover - it's the growing embryo that's transferred afterall. I don't know their reasoning behind not allowing things like ET and AI so there could very well be a good explanation, but it seems silly to me when we can confirm lineage with DNA testing these days. Maybe in time they will allow it, sounds like a win-win situation to me.