Abstract
Cellulolysis in the fermentation chambers in Svalbard reindeer
Highlights
Introduction rences in the ruminal anddistal fermentation chamber (DFC) in vitro digestibilitySvalbard reindeer (Rangifer tarandus platyrhynchus) of pure cellulose in Svalbard reindeer shot in two are distributed in areas with varying vegetation and different areas.rely on symbiotic rumen and DFC micro-organisms to ferment plant fibres
On N L in winter the IVDMD after 48 h of fermentation was low (2-19%) in the rumen compared to N A where ruminai IVDMD of cellulose ranged between 6-49% in winter and 35-67% in summer (Table 2, Fig. 1)
The ruminal in vitro fermentation of pure cellulose was low in Svalbard reindeer compared with reindeer from mainland Norway (Olsen et al, 1997) but there were large individual variations
Summary
The number of cellulolytic bacteria in the crude protein (CP), non protein nitrogen (NPN), rumen fluid of Svalbard reindeer was 31.5 x 108/ml water soluble carbohydrates (WSC) and plant fibres in summer and 12.6 x 108/ml in winter (Orpin et al (hemicellulose, cellulose and lignin) while DFC The with rumen fluid and DFC contents from a total of volatile fatty acids (VFA) from this organ can con- 12 reindeer (Aagnes & Mathiesen, 1995).
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