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Commodities: Field Crops: Forages

Common Terms Used in Animal Feeding and Nutrition

Glossary: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

W

Water Soluble Carbohydrates (WSC): the carbohydrates which can be solubilized and extracted in water. WSC includes monosaccharides, disaccharides, and some short chain polysaccharides, mainly fructans, which are a major storage carbohydrate in some cool season grasses (e.g., timothy).


Wet Chemistry” Analysis: a term that collectively refers to a number of scientific techniques involving direct analyses with solvents, acidic or basic solutions, and other chemicals and other traditional laboratory methods used to analyze feed samples (e.g., various drying and burning procedures). The procedures are based on sound chemical and biochemical principles, but require the sample to be destroyed and take considerably more time to complete than the newer methods, such as Near Infrared Spectroscopy (NIRS). Still, wet chemistry is the basis for all modern, instrument-based, analytical methods and for calibration of NIRS methods. Wet chemistry methods are the most accurate methods for determining nutrient values of feeds/forages and are frequently used for quality assurance purposes or in the development of new techniques/calculations.