Gedanken zur Schätzung des energetischen Futterwertes

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Abstract
It was the task of the report to show simple ways for the estimation of the energetic feed value, to derive an objective for a laboratory method for the evaluation of the energetic feed value and in that case to make energetic feed evaluation more precise. The following thoughts, results from calculations and analysis of the data material of the feedstuff tables (N''EHRING et al., 1970) as well as the monograph ''Energetische Futterbewertung und Energienormen'' (SCHIEMANN et al., 1971) are to be given prominence: 1) Digestible organic matter is a parameter which is suitable for energetic feed evaluation and offers itself as an objective of a laboratory method. Work on methods for ascertaining digestible organic matter outside the animal organism must therefore be activated. 2) The content of the crude fibre in the various roughages is adequate for the estimation of digestible organic matter and thus the energetic feed value. Various methods of using crude fibre in the estimation of energetic feed value are possible. Basic research into the effect of crude fibre on the digestibility is still necessary. 3) The inclusion of cerebral starch into the energetic evaluation of feedstuffs resulted in the following equation for the estimation of the energetic feed value: EFUcattle=g digestible organic matter .times. 0.77 +g cereal starch .times. 0.16 +g crude fat from cereals and oil seeds .times. 1.76. The energetic evaluation of feedstuffs according to this equation, in contrast to evaluation according to the equation for digestible nutrients, above all results in different relations between the energetic feed value of cereals and roughages. 4) A more detailed investigation of the carbohydrate fraction of the various feedstuffs promises the improvement of the assessment of the energetic feed value of certain feedstuffs. Therefore, from the point of view of energetic feed evaluatin, the development and the introduction of an efficient carbohydrate analysis is to be encouraged and demanded.