Two Million Carcasses, One Lesson

Most of us make decisions off the cattle in front of us. That is fine until you want to know if your cattle are normal or if you are fooling yourself. A big dataset can answer that. Each year Certified Angus Beef runs a multipacker supply study that the American Angus Association's journal describes as covering nearly 2 million Angus-influenced carcasses. Here is what the published summary says and how I would put it to work.

Why it carries weight

Two things make the study worth more than a barn-talk average. One, it pulls from more than one packer. A single plant buys its own mix of cattle from its own region, and its numbers show it. Two, it is weighted by season, so a hot August does not skew the whole year. That does not make it perfect, but it is a far better picture than anything you will get from the cattle in your own lot.

The benchmarks

The summary gives two portraits. The average carcass that met the brand's specs graded Moderate marbling, with a ribeye near 14.6 square inches, about 0.65 inch of backfat and a hot weight of 923 pounds. The average carcass that missed graded Small, with a ribeye near 15.2 square inches, 0.63 inch of backfat and 949 pounds.

Look at where the gap is. Backfat is nearly the same. The big difference is marbling, one full step. The misses were also a bit heavier and bigger in the eye. That tells you the story in one line: cattle that miss are mostly short on marbling, and a little oversized besides.

Why cattle miss

The same report says about four out of five of the carcasses that fell short missed on marbling. A bigger group than you might expect were close to the cutoff, which means a modest improvement would have turned them from a miss into a premium. Smaller shares missed on weight over 1,100 pounds, on ribeye over the limit, or on fat over one inch. Overall, the report says roughly 37.6 percent of the Angus-influenced cattle processed at licensed plants met the ten specifications, up from about 14 percent in 2006. Progress is real, but most cattle still miss.

What the study does not say

Be straight with yourself on this part. The published summaries I could pull do not give fabrication yield results, meaning how many pounds of boxed product come off each carcass. If somebody quotes you a yield number from this study, ask where it came from. Do not repeat a number you cannot trace. Yield depends on fat trim, muscling and how a plant cuts, and it deserves its own look.

Putting it to work

• Get your closeout sheets from the packer and average your own marbling, ribeye, fat and weight. Compare them to the benchmarks above.
• If you are short on marbling, look at genetics first, then at days on feed and what you feed. Cheap changes in the ration will not fix a weak sire.
• If you run heavy, check your sort. Hold back the biggest cattle and ship them separately so they do not drag a pen down.
• If a lot of your misses are barely under the line, ask your nutritionist whether a short extension of the feeding period pays. Do the math before you add days, because feed cost is real.

farm.fm's page on the marketing of Angus beef is a decent follow-up if you want to think about where to sell once your cattle are hitting the mark.

How to read your own closeout

Take the last three closeout sheets you have and lay them side by side. Mark every carcass that missed the brand and write the reason beside it. You will likely see a pattern within ten minutes. Maybe the misses are all one sire group. Maybe they are all the last pen loaded in summer. Maybe they all went heavy because they sat too long waiting on a truck. Whatever it is, the pattern points at a fix, and a fix is worth more than any national average.

Ask for the actual marbling scores, too, not just the grade. A carcass that fell a couple of points short is a feeding or timing problem. One that fell far short is a genetic problem. Treat them differently, because the cheap fix for one will not fix the other, and you do not want to spend money on the wrong cure.

Keep it in proportion

An average is not your herd. Your cattle may sit far from the center, and the study covers Angus-influenced cattle of all kinds, not just ones raised on purpose for a brand. Specs also move. The ribeye ceiling was reported to change in 2025, so older averages measured against older limits need care. Use the study as a mirror, not a rulebook.

The source for these numbers is the Association's journal feature on the brand. For research-based guidance on carcass quality, see the University of Nebraska beef extension site, and for ranch suppliers and services try the agriculture directory.

This site is independent and not affiliated with the American Angus Association or Certified Angus Beef LLC. Verify figures against the current official sources before you make a marketing decision.