Selk Addresses Dressing Percent Impact On Cull Cow Marketing

Oct 29, 2014

By Glenn Selk, Oklahoma State University Emeritus Extension Animal Scientist

Cull cows that are destined to go to the packing house are graded by their fleshiness. The fattest cows are called “Breakers”. Moderately fleshed cows are “Boners”. Thin cows are called “Leans” or “Lights”, depending upon the weight of the cow.

There will be price differences among these four grades. However, within each grade, large variation in prices per hundredweight will exist because of differences in dressing percentage. Cow buyers are particularly aware of the proportion of the purchased live weight that eventually becomes saleable product hanging on the rail. Dressing percentage is (mathematically) the carcass weight divided by the live weight multiplied by 100.

Key factors that affect dressing percentage include gut fill, udder size, mud and manure on the hide, excess leather on the body, and anything else that contributes to the live weight but will not add to the carcass weight.

Most USDA Market News reports for cull cows will give price ranges for High, Average, and Low Dressing Percents for each of the previous mentioned grades. As you study these price reports, note that the differences between High and Low Dressing cows and bulls will generally be greater than differences between grades.

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