librarian said:
I was just putting up the type of information a person with an amateur understanding (like myself) could access with a best guess amateur approach.
XBAR, using EPD's correctly is just another of the many things I am very blurry on. Not that I even trust them, but I would like to understand the concepts.
I just figure yearling weight tells more about growth. MCE tells if the bull is not terminal, and marbling is a major thing Angus will not want to loose in an outcross.
You rank relevance as: The first thing I look at is birthweight. The second thing is weaning weight. The third thing is dam weight. Then I'm going to look at Milk, CE, then MCE.
This means, from a cow/calf perspective, one first looks to see how fast they grow? Then how efficient the dam was at raising a calf? Then how expensive the milk was? Then shape of calf? Then?
Descending order means largest to smallest, I think?
You're cattle sense is light years ahead of most people I encounter- both on here and in person. Give yourself some credit!
EPD's are something I don't highly subscribe to either. At least not in the Shorthorn breed.
I regularly run across pedigrees where the actuals and the EPDs just don't add up. And not just the actuals for the particular individual, but when analyzing the actuals of every animal in the pedigree relative to the generated EPDs. Things like a bull w/ a 115lb actual bw having a positive CE, or a bull w/ a sub 1000lb actual yearling weight having a YW EPD in the top 1% of the breed just don't add up. We all know we've seen bulls, and not just an individual bull but an entire pedigree, where you know they have substantially more/less growth than the EPD suggests.
Another thing that makes me go hmmm is the fact that the algorithms used to compute EPDs are formulated by database engineers. Now not to sell the cattlemen short, but just like w/ social media or anything IT for that matter, how many database engineers out there have a good, conceptual understanding of beef cattle production? How many database engineers have the ability to recognize when generated epds don't necessarily project or coincide w/ generations of actual performance? If your unable to recognize this, I don't know how any adjustments in the formula could be made going forward as to engineer EPDs to better reflect projected performance.
I know what descending order means. lol. I just got a chuckle out of it. Line those bulls up side by side and you'd see what I mean.