If selective breeding was not successful then the whippet as a breed (itself the product of selective breeding) would have no speed advantage over any other breed and we might as well race them against Labradors.Smiffy@VeronnaV said:If the selective breeding is so successful, what I want to know is why there are not more champions from the same litter on the race track in the UK? For if, as Judy's stats show, champs beget champs, why aren't they all, or at least most of the progeny from the same litter, champs? Because racing involves no arbitrary judgement, it's the best dog on the track on the day. So it would not be unreasonable to assume that from a litter most of them will be excellent racers. Indeed, winners of races, if the performance of their parents are used as the base line.
The reason that not all the puppies from a litter are champions is because each puppy has a unique combination of the genes it has inherited from its parents. They are not all the same. A dog is not fast because it is a champion but is a champion because it is fast. That does not mean that all dogs that are fast are champions. It also needs to be fit, psychologically suited to racing and trained well. And if it is all those things then a bit of luck comes in handy too. What makes a racing dog successful is partly genetic, partly nurture and partly training so all the puppies in a litter are not equal.
However if you start off with a breeding where the genetic components of speed (or any other particular trait) have been selected for, then the chances of success are significantly increased. Bit like actually buying your lottery ticket except that unlike the lottery, getting that winning combination of genes is not soley up to chance but depends on what you start with ie. the parent's genes.
The question that the answer is "Do most champions (taking the title as an indicator of speed) come from fast parents or from slower ones? To be meaningful you have to compare the figures against the population (in this case pedigree racing whippets in the UK) as a whole.
Very roughly, by my reckoning an average of about 100 - 125 passports are issued every year and each year about 7 dogs become champions, so thats less than 7%. Therefore, if more than 7% of puppies with a champion parent become champions then it would indicate that having a champion parent is a factor in success. Of course what we really mean by a champion parent is a fast parent but there are no statistics available for that.
Right, I've bounced the computer with the database inside it around the room, wrote some stuff down, used a calculator and turned what was left of my brain to jelly and come up with this:-
895 dogs that I have racing names for, were born in the last 10 years. Of those 501 had a racing champion parent and 394 didn't. Of the 895, I've already worked out that 60 (6.7%) became champions. Of the 501 dogs who had a champion parent, 50 became champions (10%). Of the 394 that didn't have a champion parent, 10 became champions (2.54%). Whats more 90 puppies had both parents being racing champions and 26 became champions (17.78%).
I think that means it most definitely helps to have champion/fast parents or that at least it raises the average quality of the litter.
Very rough figures, or rather fairly precise figures taken from rough statistics and I have a funny feeling I'm off topic too :wacko:
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