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Nutrient Values For 300 Cattle Feeds

Posted by Teresa Steckler -

While it may be a little early to worry about next falls feedstuffs, one might want to consider downloading the 2013 Beef Cattle Feed Composition tables.

Download the 2013 Beef Cattle Feed Composition tables here.

These tables will be very helpful in determining the nutritive value of feedstuffs. Using this information, diets can be formulated from beef cattle feeds and ingredients to meet these requirements with the expectation that animals will not only remain healthy, but also be productive and efficient.

Feeds are not of constant composition. Unlike chemicals that are "chemically pure" and thus have a constant composition, feeds vary in their composition for many reasons. So, what is the value of showing composition data for feeds?

An actual analysis of a feed to be used in a diet is much more accurate than the use of tabulated composition data. Actual analysis should be obtained and used whenever possible, but it's often difficult to determine actual composition in a timely way. Thus, tabulated data are the best source of information.

In using tabulated values, one can expect organic constituents (e.g., crude protein, ether extract and fiber) to vary as much as ±15%, mineral constituents to vary as much as ±30%, and energy values to vary up to ±10%. Thus, the values shown can only serve as guides. That's why they are called "typical values." They aren't averages of published information, since judgment was used in arriving at some of the values in the hope that these values will be realistic for use in formulating cattle and sheep diets.

In addition, new crop varieties may result in nutrient composition changes. Genetically modified crops may result in feeds with improved nutrient content and availability, and/or decreased anti-nutrient factors.




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