You are at the feed store looking for a mineral supplement for your goats because you have heard that grass and hay in your area are deficient in minerals. You read the label of a recommended supplement with a “guaranteed analysis” expressed in terms of % (percent), ppm (parts per million), IU (International Units) and USP (U.S. Pharmacopeia) and have absolutely NO idea how all these numbers relate to your goat’s diet (Table 1. Guaranteed Analysis Mineral/Vitamin Supplement). Sound familiar!
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