منابع مشابه
Role of rumen fungi in fiber degradation.
Anaerobic fungi inhabit the rumen and actively degrade plant cell walls. Rumen fungi produce high levels of cellulases and hemicellulases and are particularly proficient in producing xylanases. These enzymes are regulated by substrate (especially soluble sugars) available to the organisms. Fungi degrade unlignified (i.e., no histochemical reaction for phenolics) plant walls totally, indicating ...
متن کاملEstimating forage protein degradation in the rumen
Forage proteins are degraded rapidly by rumen microorganisms and therefore supply relatively small quantities of undegraded intake protein (UIP). Growing cattle with high metabolizable protein requirements and lactating beef and dairy cows respond to UIP supplementation when fed high-forage diets, even though degradable intake protein (DIP) is adequate. This observation suggests that an accurat...
متن کاملUnderstanding Dietary Fiber: The Role of Forage Fiber in Rumen Development and Heifer Growth
Raising dairy heifers from birth to calving has been found to comprise the second largest expense on the dairy farm towards the production of milk (Heinrichs, 1993) and therefore require a reasonably high level of attention on a commercial dairy farm. The focus of this paper will be feedstuffs, in particular limiting forages for the development of the rumen in the neonate, as well as a possible...
متن کاملIn Situ Rumen Degradation Kinetics of High-protein Forage Crops in Temperate Climates
The present study was conducted to evaluate the nutritional value and in situ degradation kinetics of eight high protein forage crops: alfalfa (Medicago sativa L.), forage oat (Avena sativa L.), mixed pasture, and ryegrass (Lolium multiflorum Lam.) pasture in early vegetative stages, two forage lupins (Lupinus albus L.) in early bloom stages, sugar beet (Beta vulgaris L.) and kale (Brassica nap...
متن کاملSimplified estimation of forage degradability in the rumen assuming zero-order degradation kinetics
M. S. DHANOA , S. LÓPEZ *, R. SANDERSON 1 AND J. FRANCE 3 1 Institute of Grassland and Environmental Research (IGER)#, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EB, UK 2 Instituto de Ganaderı́a de Montaña (IGM), Universidad de León – Consejo Superior de Investigaciones Cientı́ficas (CSIC ), Departamento de Producción Animal, Universidad de León, E-24071 León, Spain 3Centre for Nutrition Mode...
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 1984
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.48.3.473-476.1984