Fermentation of six different forages in the semi-continuous fermentation technique Caesitec |
| |
Authors: | Vosmer J Liesegang A Wanner M Zeyner A Suter D Hoelzle L Wichert B |
| |
Affiliation: | 1. Institute of Animal Nutrition, Vetsuisse‐Faculty University of Zurich, Zurich, Switzerland;2. Chair for Nutrition Physiology and Animal Nutrition, University of Rostock, Rostock, Germany;3. Research Station Agroscope Reckenholz‐T?nikon ART, Zurich‐Reckenholz, Switzerland;4. Institute of Veterinary Bacteriology Vetsuisse‐Faculty University of Zurich, Switzerland;5. Institute of Environmental and Animal Hygiene and Veterinary Medicine, University of Hohenheim, Stuttgart, Germany |
| |
Abstract: | The aim of the present study was to compare carbohydrate degradation of forages which store carbohydrates either predominantly as fructan or starch, in horses’ hindgut. The effects of an abrupt change from hay‐based feeding to green fodder‐based feeding on the caecal flora were tested with the in vitro hindgut simulation technique ‘Caesitec’. Six trials with different forages (English ryegrass, tall fescue, grass mixture‐horses, grass mixture‐cows, lucerne, white clover) were conducted. During a 4‐day stabilisation period, samples were taken once a day before loading the fermenters with hay. After diet‐change to forage‐based feeding, samples were taken four times a day. Ammonia and pH‐value were measured before and 1, 2 and 6 h after loading the ‘Caesitec’. Gas formation was measured daily. Bacterial numbers, lactate and short chain fatty acids were detected at four time‐points of each trial. The grass mixtures contained the highest amounts of fructan. The pH‐values were in the physiological range from pH 6 up to 7 (6.58–6.83) by feeding all forages. Gas formation, anaerobic and aerobic bacterial numbers increased after diet change from hay to any forage. The maximum amount of fructan (3.75 g/kg) in swiss pasture did not cause a permanent pathological change in the hindgut‐flora. |
| |
Keywords: | horse carbohydrates caecum digestion pH in vitro digestion |
本文献已被 PubMed 等数据库收录! |
|