The accuracy of fodder analysis depends on the sample you send to the laboratory. It is critical that the sample represents the average composition of the "lot" of fodder sampled, otherwise the laboratory tests will not be useful.
A "lot" is defined as hay or silage taken from the same cutting, at the same stage of maturity, the same species (pure or mixed) and variety, the same paddock, and harvested within 48 hours. Other factors influencing the definition of a "lot" include rain damage, weed content, soil type, treatment after cutting and storage effects. A "lot" of baled hay or cubes should not exceed 200 tonnes.
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