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Ensure Quality Hay with SGS Sampling & Testing

Forage testing is the foundation of ration building and therefore requires accurate results. Hay is a highly variable plant material that changes with field conditions during the growth and harvesting periods and has variations in the leaf-stem ratio as well as the amount of legume/grass mix within a lot.

Taking a proper and representative sample is the most important factor in correct forage analysis. While laboratory analysis can determine the quality of a submitted sample, the submitted sample does not represent the quality of an entire lot if that sample was not obtained properly.

SGS Brookings provides sampling and testing services for hay and forage, as we work with our clients to help them maximize profit and enhance efficiency.

SGS uses NIR technology (Near InfraRed Spectophotometry) to determine Relative Feed Value or RFV, which quantifies the quality of the forage in a single number.


Forage analysis typically consists of Crude Protein (CP), Acid Detergent Fiber (ADF), Neutral Detergent Fiber (NDF), Calcium (Ca), Phosphorus (P), Potassium (K) and Magnesium (Mg). Other elements such as Iron (Fe), Manganese (Mn), Zinc (Zn) and Copper (Cu) are also useful in determining the ration.

Contact SGS at 605-692-7611 or analytical.brookings@sgs.com to learn how we can help you ensure the quality of your hay.