Jeff wrote:TJ,
We're talking about thoroughbred race horse breeding, we're not talking about cows TJ . Historically, breeders won't linebreed closer than 3X4 for a racehorse because historically, going closer than that results in horses that don't win races.
Generally, linebreeding in horses is done 4X4 and back.
Jeff
Hi Jeff,
You aren't insulting me if you disagree with what I said...while having a civil conversation about it. Hopefully I can learn from it, which is the object of our conversation. Although, I'm well aware we are not "talking about cows here"...which I suppose I could interpret as an insult, but in the spirit of learning I will accept it as a punctuation mark needed by you to get your point across.
In my knowledge of TB breeding a TB breeder uses slightly different terminology than other livestock breeders...let's say cow breeder's for example. In TB breeding, Inbreeding refers to a duplication of a single ancestor within five generations. Whereas linebreeding refers to duplicating a single ancestor within more than five generations. These are similar but certainly not interchangeable when talking TB breeding as the distinction between being linebred and inbred is because of these generation gaps. In your example that linebreeding isn't done closer than 3x4....you are correct. Because 3x4 isn't line breeding it is inbreeding. TJ