I get so confused with all this. I know a Danish Warmblood is a warmblood, as is a Swedish Warmblood, Dutch Warmblood, etc., but then people call Hanoverians, Holsteiners, etc., warmbloods, too. I saw somewhere that an Irish Sporthorse is a warmblood, but I guess they're not called Irish Warmbloods because they're actuall a draft cross, although an Irish Draught isn't the same sort of draft breed as a Clydesdale, Suffolk Punch, Percheron, etc. Or is it?
Then I look at pedigrees of Danish WBs, Dutch WBs, etc., and see Thoroughbreds there, fairly recently sometimes. I really don't understand these breeds as breeds, when a hypothetical Danish Warmblood could have one TB parent and one Danish Warmblood parent, and that Danish Warmblood parent could have one TB parent and one Swedish Warmblood parent, or one Hanoverian parent and one Swedish Warmblood parent, or one TB parent and one Holsteiner parent? It is like the early days of TB breeding, though, or the early days of a lot of other breeds.
Were the original Hanoverians, Holsteiners, and other carriage/heavy harness horses considered coldbloods, or have they had Thoroughbred blood in them for as long as, say, a lot of Cleveland Bays?
I "know" that a Thoroughbred is a horse that is, or is eligible to be, registered in the Stud Book and can be traced back to one or more of the three foundation sires. I also know that a draft cross is NOT a warmblood, although technically, I guess, if you cross a TB or an Arabian (hotblooded breeds) with a draft horse, the foal would be a warmblood (i.e., a cross between a hotblood and a coldblood). Yet here in the US we have got draft crosses that are called warmbloods or even, I think, sometimes American Warmbloods.
Back when I was a child, TB crosses were called half-breds. Now some people call a TB-Percheron cross a Thorcheron. A QH-Friesian cross can be called a Quaresian.
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