So, I was thinking today that if the jockey club was to allow AI (which I don't think they do) and was to allow embryo transfer. Would it change the quality of horses being bred? My thought through a haze of exhaustion is/was that if the eggs and to a lesser extent sperm could be frozen and implanted in other horses then those quality horses could have longer on track careers. Which could totally change the type of horses that are at the track. Its impressive to have a stellar three year old season but wouldn't it have been amazing to see some of the great horses have a 4 or 5 year old season? Likewise, if a horse was great as a three year old and fell apart as a 4 year old would it change the horses being bred? Specifically, I was thinking of leg issues. If horses had longer on track careers and you basically select via long careers for horses that hold up on the track than do you get horses with better legs? What are folks thoughts on this? Its sort of a different take on the "what if we didn't start racing them until they were 4 or 5". We would be seeing different horses but would be of higher quality?