Thoughts on champion stayers' pedigrees · 23.01.09

In recent years, the lack of distance races has made it difficult to identify pedigrees and families as sources of stamina for Thoroughbred breeding purposes. That is ostensibly one of the reasons for the inauguration of the Breeders’ Cup Marathon, and the creation of several new dirt and synthetic stayers’ races as Marathon “preps”, last year. Left Coast Racing’s “Unofficial Champion Stayer Award” should therefore make some reference to the pedigrees of its contenders, and I was going to include such a discussion in my last article. However, and for what it’s worth, I decided that it merited a separate entry. The following is offered as a series of observations, not analysis — I’m no pedigree expert, after all.

Champion stayer Champs Elysees is a son of Danehill, out of the great Irish broodmare Hasili. Through grand-sire Danzig he is descended tail-male from Northern Dancer, and his sire’s pedigree also boasts champions Buckpasser and Ribot. His dam’s pedigree includes both Nijinsky (Northern Dancer, again) and Roberto — if you subscribe to the X-factor theory, Roberto is in the right place in the pedigree to be source of the large-heart gene (assuming he was a carrier).

Big Booster is a grandson of A.P. Indy, through Accelerator, and so boasts both Seattle Slew and Secretariat on the top-side. Through his dam Waterside he is a fourth-generation descendant of Round Table, whose blood is a notable source of stamina. Like Champs Elysees, Big Booster shows Northern Dancer on both sides of his pedigree.

By contrast, Delosvientos can be considered a classic case of hybrid vigour. His dam, the Cryptoclearance mare Secret Psalm, has an all-American pedigree, inbred to Mr. Prospector four generations back. Sire Siphon, however, was a champion in Brazil before capturing the Santa Anita Handicap and the Hollywood Gold Cup, and is of pure South American (and, further back, European) lineage.

Let’s look at the pedigrees of the other top stayers of 2008:

Again, I don’t know enough about thoroughbred pedigrees to offer any in-depth analysis. However, what I do notice is that almost all of this past year’s top stayers show prominent sources of stamina in their dam’s pedigree. Whether that tends to give credence to the X-factor theory, or simply that stamina and class tends generally to be inherited from from the maternal side (as opposed to speed coming from the sire), is an important question. I offer it only as an observation — make of it what you will.

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