The use of purified condensed tannin as a reference in determining its influence on rumen fermentation.
1. Tannins were purified from the leaves of trees forming part of giraffe's diet in the Kruger National Park. 2. In general, hydrolysable tannin formed less than 10% of the total purified crystal complexes, condensed tannin and possibly some non tannin phenols forming the balance. 3. Each tree species condensed tannin gave a different calibration curve and these were used in the assay. 4. Volatile fatty acid production during in vitro fermentation was greatly reduced when the substrate contained more than 6% condensed tannin.
Centre for Wildlife Research, University of Pretoria, South Africa.
W
W
van Hoven
D
D
Furstenburg
D000818:Animals; D000835:Animals, Wild; D002138:Calibration; D004032:Diet; D004734:Energy Metabolism; D005285:Fermentation; D010944:Plants / Q000378:metabolism; D012417:Rumen / Q000378:metabolism*; D012418:Ruminants / Q000378:metabolism*; D013634:Tannins / Q000302:isolation & purification / Q000378:metabolism*
D013634:Tannins