Opitz v Boberfeld, W Prediction of digestibility and energy concentration of winter pasture forage and herbage of low-input grassland--a comparison of methods. [electronic resource] - Archiv fur Tierernahrung Jun 2003 - 167-76 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0003-942X Standard No.: 10.1080/0003942031000136602 doi Subjects--Topical Terms: Animal Feed--analysisAnimal Nutritional Physiological PhenomenaAnimalsCattleDigestionEnergy MetabolismIn Vitro TechniquesPoaceae--microbiologyPredictive Value of TestsRumen--metabolismSeasons