The original question I had was:
"I am looking for a statistic, i have seen it but cant recall. It shows the "quality of mares" booked to a stallion. It gives that a number.
The reason I ask is this: For pinhooking, it might be nice to know what stallion has a great book of mares, with foals about to race (a nice crop of 2-3 year olds) so that you can time your yearling purchases to a "better cropped" sire. Does that make sense? What I mean to say is, it would be good to have a yearling (bought in Spetember) with some prominent stakes winners happening around him. Get a "hot sire" at the sale, and who knows."
henthorn kindly replied the following:
"Dray, that term you're looking for is the CSI Comparable Sire Index. It is the racing quality of all progeny of the mares the sire is bred to, other than his own. We look for sires whose CSI is lower than their own Sire Index (SI), which indicates he improves his mares. I'm not sure I understand the subtleties of the AEI vs SI, but they are similar. What you are suggesting is a good idea. A stallion that gets good mares has a better chance of producing good offspring, although it is still very hit and miss; as most good racehorses can't reproduce themselves."
Can anyone tell me where I can find this list of top CSI and CI for sires? Can anyone suggest a good methodology by which I can "guess" a sire that might get "hot" at 2 year old sale (because it has a great foals running from top mares). I would need to predict this information in 4 months or so, around the time of the yearling sales.
Thank you for any ideas/advice...
Dray
