RETHINKING OF FODDER QUALITY EVALUATION PARADIGM

The schema of a chemical analysis of the forages, developed in 1860 by Wilhelm Henneberg in the village Weende (Holland), is applied in our country till present time almost without changes. A basis of the forages evaluation test is the organoleptic, physical and chemical indexes of the crude nutrients content (dry matter, protein, fiber, fat, ash); plus for ensilage forages — рН, the content of organic acids, ammonia nitrogen; for artificially dried forages — the physical form, carotin etc. The last decade are spreaded also commercial laboratories from developed countries having century traditions of the production quality estimation. Instead of Weende model comes the detergent schema of Van Soest allowing to refuse crude ("unpurified") nutrients and to pass on to pure substrates of carbohydrates — unstructured (sugar, starch and so on), easy and difficult digestible (hemicellulose, cellulose) and to practically undigestible polymer lignine. In this article has be done comparative analysis of traditional Weende and detergent systems, using data of laboratory BLGG AgroXpertus and a concrete example of evaluation test of corn green mass and the silage prepared from it. Despite different approaches and amount of used indexes comparison has shown adequacy of domestic and foreign systems of these forages evaluation. However, the accumulated experience demands to be detailed assimilated, and the advanced methods should find worthy application in our laboratory practice.