At times it is necessary to know the nutrient content of feeds. This is especially true when feeding forages to lactating, pregnant, or growing livestock. It is also useful when nutritional problems are possibly based on signs of imbalance or poor performance. The most important factor when obtaining a sample for feed analysis is obtaining a representative sample.
Sampling techniques vary according to feed type.
Pastures - Select ten sites that are utilized by livestock. Make sure samples are not being collected from areas that are not being grazed and are overgrown. If the entire pasture is utilized, try to distribute sample locations uniformly. Ideally a one square foot area should be sampled. All forage should be clipped to 0.75 inches with stainless steel scissors.