If you want to compare the nutritive value of feeds that vary in moisture content, how should the composition of the feed be expressed?

When comparing the nutritive value of feeds with differing moisture contents, expressing the composition on a dry matter basis is essential. This technique allows for a standardized comparison by removing any variability introduced by water content.

The dry matter basis focuses solely on the nutrients available in the feed, excluding water, which is crucial since moisture can significantly influence the nutritional density of the feed. For instance, two feeds may appear to have similar amounts of protein or energy when measured in their as-fed state, but once moisture is accounted for, one might contain a much higher nutrient concentration than the other.

Using a dry matter basis ensures that comparisons are equitable and accurate, reflecting the true nutritional value without the dilution effect of moisture, enabling more effective feed formulation and evaluation.