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It is often referred to as the Weende System and was principally devised to separate carbohydrates into two fractions: crude fibre and nitrogen free extract (NFE). The system consists of determinations of water, ash, crude fat (ether extract), crude protein and crude fibre.
The Weende analysis consists of six different groups, which are explained below and briefly explained how we arrive at the results. Moisture. The moisture content is determined by placing the sample in an oven with a temperature of 103 degrees Celsius. If the weight remains constant and nothing evaporates, the moisture content can be determined.
Apr 27, 2021 · Initially, the Weende system of proximate analysis (i.e., moisture, CP, crude fiber, crude fat, nitrogen-free extract, and ash) was developed in an attempt to relate chemical composition of feed ingredients to their nutritional value at a time in history when very little was known about energy and nutrient digestibility of ingredients or ...
The proximate system for routine analysis of animal feedstuffs was devised in the mid-nineteenth century at the Weende Experiment Station in Germany (Henneberg and Stohmann, 1860, 1864). It was developed to provide a top level, very broad, classification of food components.
Nutrient analysis serves as a system to analyze the feed and the needs of the animal, enabling producers to optimize nutrient utilization in feed and helping researchers relate to animal performance, tackle issues of underperformance, and reduce food production costs.
Oct 11, 2018 · Types of ruminant feed evaluation. Numerous techniques are used in combination to derive nutritional value for individual feed materials, as well as combinations, e.g. a total mixed ration (TMR). One of the most basic is the Weende System, also known as proximate analysis.
