I tried, I really, really tried. I've tried for several days. But I just can't help myself.
Using EPD's to evaluate show cattle is the stupidest, most absurd, idiotic, illogical, fallacious,asinine, moronic, witless, hair brained idea ever concocted by a breed association. The whole premise behind this is to make the show ring appear more in tune with the commercial industry. And the Red Angus breed doesn't have the patent to this brainless idea, the Simmental breed leads the way! Our PTP (Progress Through Performance) program is the laughing stock of the industry. Ask any judge who's judged a national show recently, emphasis on RECENTLY.
The inarguable reason why this is so stupid is that the EPD's are grossly inaccurate. Speaking for our breed in particular, we report data by the most complex reporting system ever designed by man, The THE program (Total Herd Enrollment, we also employ a staff member who's job it is just to come up with catchy acronyms). If you have a herd totally devoid of anything but purebred Simmental cattle it's maybe not so bad. But many have diversified operations and if you have some % cows say having Charolais ET calves, along with some varying percentages and maybe a couple other breeds. If you don't report EVERYTHING you have the registration fees are so high that registering animals and thereby reporting data is no longer cost effective so the data just goes unreported. SO that's what I do. I don't report anything unless I sell it and the owner requires papers. I have been told by SEVERAL large breeders that the program is such a hassle they just make data up as they go in order to get their animals registered. That's HUNDREDS of animals data being reported inaccurately in order to make the job small enough to be handled in a reasonable amount of time. Then ad to that the producers who manipulate data in order to make theirs look better on paper and what you have is a bunch of numbers that mean nothing.
Show animals for the most part have no progeny. They have EPD accuracies in the single digits for many traits. So you're going to tell me it's a good idea to judge animals using numbers that reflect .09 accuracy that were derived from data that was not reality? Is that what I'm hearing? Say that out loud and see if it makes any sense at all to you.
Don't give me the argument that there are already inaccurate things int he show ring like birth dates and breed composition and the like. Why would you want to just throw another inaccurate factor in there? How much sense does that make?
If you're judging a bull and he has the best EPD profile money can buy, but he doesn't have the structure, evaluated by visual appraisal, to service 30 or 40 cows a year for 7 or 8 years what good is he? He's useless. Give me his actual performance measures along with visual appraisal and I can make a better determination on him than all the yearling EPD's you could round up. Now if I needed to know that he had the highest REA EPD in our breed and that I could expect a difference of .25 square inches of REA improvement in my cattle over the average Simmental bull, then I'd have to go to my esteemed associations EPD's to find that out. They spend my money so wisely.
Another example of how slippery a slope using EPD's is. Many years ago when Simmentals were still spotted we used what were called EBV's (Estimated Breeding Values). Not nearly as many traits were evaluated as there are today. EBV's were hot as far as marketing went. So we bred many cows to a bull that was known as a 5 way trait leader with accuracies over .90, as good as you could do as far as EBV's were concerned. During the time the cows were pregnant, Cornell University who calculated these EBV's decided to change their mathematical model. That made the bull now a leader for only CE and BW and all of my calves were basically non marketable. They were the same calves they would have been if the model hadn't changed. But due to a different way of manipulating the same data, now they were deemed not as good.
In our breed, and maybe all, growth and milk are considered antagonistic traits as far a EPD formulas go. Time after time after time we see cows with Holstein like udders and poor milk EPD's. When their calves put up high weaning weights it's attributed soley to the cows high growth EPD. That's because a computer can't evaluate visually. Even after 10 calves that cows milk EPD will be low. It's irrational.
EPD's certainly have their place as a tool in making breeding decisions using animals with high accuracy figures, mainly bulls who have hundreds of progeny reported from many herds. But if you know what many breeders know, that the data from which EPD's are derived is less than accurate in many instances, then you'll know they have no place in judging yearling cattle with low EPD accuracy figures. Given these facts there is really no rational argument for it.