title: Abomasal displacement in cattle: influence of concentrates in the ration on fatty acid concentrations in ruminal, abomasal, and duodenal contents.
abstract: The primary causative factor in abomasal displacement appears to be atony or hypotony of the abomasum. Seemingly, high-concentrate feeding inhibits abomasal motility by increasing the amount of fatty acids which enter the abomasum. In the present study, cows with ruminal, abomasal, and duodenal fistulas were fed a hay ad libitum ration or a hay and concentration ration and were compared. It was shown that a considerable increase in ruminal volatile free fatty acid (VFFA) concentrations was not followed by a subsequent increase in abomasal VFFA concentrations. Differences in abomasal VFFA levels between the 2 rations could not be found. There was a slight, but insignificant, increase in duodenal VFFA concentrations after cows were fed the hay ration. One cow given the hay and concentrate diet had a small, but significant, increase in duodenal VFFA concentrations during the first 2 hours after feeding. The VFFA concentrations in duodenal fluid were too low to support the hypothesis that changes in duodenal VFFA concentrations could be responsible for abomasal hypotony.
mesh_terms: D000018:Abomasum / Q000378:metabolism*; D000821:Animal Feed; D000818:Animals; D002417:Cattle / Q000378:metabolism*; D002418:Cattle Diseases / Q000209:etiology; D004386:Duodenum / Q000378:metabolism*; D005232:Fatty Acids, Volatile / Q000378:metabolism*; D005260:Female; D006109:Poaceae; D012417:Rumen / Q000378:metabolism*; D013272:Stomach Diseases / Q000209:etiology / Q000662:veterinary
chemical_list: D005232:Fatty Acids, Volatile