Mean retention time of digesta in the different segments of the equine hindgut
Six Thoroughbred horses were used to determine the mean retention time (MRT) of digesta in the different segments of the hindgut. The horses were fed timothy hay or silage in equal amounts (1.6% bodyweight (BW)/day) every 3 h/day. Hay or silage labeled with the rare earth elements cerium, dysprosium...
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Published in | Animal science journal Vol. 79; no. 1; pp. 89 - 96 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Melbourne, Australia
Blackwell Publishing Asia
01.02.2008
Blackwell Publishing Ltd |
Subjects | |
Online Access | Get full text |
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Summary: | Six Thoroughbred horses were used to determine the mean retention time (MRT) of digesta in the different segments of the hindgut. The horses were fed timothy hay or silage in equal amounts (1.6% bodyweight (BW)/day) every 3 h/day. Hay or silage labeled with the rare earth elements cerium, dysprosium, neodymium, ytterbium, lanthanum, samarium and praseodymium, were fed to the horses 36, 30, 24, 18, 12, 6 and 3 h before slaughter, respectively. Just after slaughter, digesta samples in the different segments were collected and determined for the contents of the rare earth elements. Using these data, a method to calculate the MRT in the different segments was proposed. There were no significant differences between diets in the MRT of each segment. The averaged MRT of hay and silage in the cecum, right ventral colon, left ventral colon, left dorsal colon, right dorsal colon and small colon was 2.9, 3.1, 5.9, 1.0, 4.0, and 4.0 h, respectively. The dry matter weight of the digesta was related to the MRT in the right ventral colon (r = 0.94, P = 0.005), left ventral colon (r = 0.87, P = 0.03), left dorsal colon (r= 0.98, P0.001) and right dorsal colon (r |
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Bibliography: | L51 2008004670 istex:DDEB4B8CF1243AF7740777CA73D3F9ED8F4FDC84 ArticleID:ASJ502 ark:/67375/WNG-1S34J52D-6 |
ISSN: | 1344-3941 1740-0929 |
DOI: | 10.1111/j.1740-0929.2007.00502.x |