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Year : 1996
Tome : 147
Volume : 8-9
Pages : 577-582
Title : Digestion of calcium soaps of rapeseed oil fatty acids in dry cows.
Authors : F ENJALBERT, C. BAYOURTHE, D. GRIESS et R. MONCOULON.
Summary : Digestion of rapeseed fatty acids (FA) as calcium soaps was studied on three dry cows, equiped with three cannulae (rumen, duodenum, ileum). Dual marker technique was used for measurement of digestive flows. Ruminal biohydrogenation of unsaturated FA was about 80 %, and was incomplete for polyunsaturated FA, so that trans-vaccenic acid was found in duodenal digesta. Intestinal digestibility of FA was about 70 %, but large variations were observed among FA : monounsaturated FA were very efficiently absorbed whereas stearic acid was poorly absorbed.
Keywords : lipids - rapeseed - calcium soaps - digestion - dairy cow.
Correspondence : F ENJALBERT
Adress : Département Élevage et Produits, Service Alinientation, École Nationale Vétérinaire, 23, Chemin des Capelles, F-31076 Toulouse Cedex

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