biohydrogenation;
dried and green forage;
conjugated linoleic acid;
D O I:
10.1016/j.anifeedsci.2007.01.017
中图分类号:
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号:
0905 ;
摘要:
Samples of two diets with the same forage/concentrate ratio (60/40 DM) and characterized by the presence of dried herbage (Diet D) or green herbage (Diet G), obtained from the same natural pasture and Lucerne (Medicago sativa), were incubated in vitro with rumen fluid with the aim of monitoring the concentration of cis and trans C-18:1 fatty acids and of rumenic acid (RA) with fermentation time. More vaccenic acid (VA) and less RA were produced with Diet G than with Diet D. In particular, the biohydrogenation of unsatured fatty acid (UFA) showed a lower rate with Diet D than with Diet G. Moreover, for Diet G, the highest content of VA was reached as a simultaneous contribution of the direct hydrogenation of RA and linonenic acid (LNA), as reaction intermediate. The presence of green or dried herbage in the diets modified the profile of C-18:1 isomers produced during rumen fermentations. In particular cis12, trans12 and cis13 isomers percentages were enhanced by the presence of fresh herbage in the diets while cis11 C-18:1 increased with hay. (c) 2007 Elsevier B.V. All rights reserved.
机构:
Slovak Univ Technol Bratislava, Fac chem & Food Technol, Dept Biochem Technol, SK-81237 Bratislava, SlovakiaSlovak Univ Technol Bratislava, Fac chem & Food Technol, Dept Biochem Technol, SK-81237 Bratislava, Slovakia
Kundríková, K
Certík, M
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机构:
Slovak Univ Technol Bratislava, Fac chem & Food Technol, Dept Biochem Technol, SK-81237 Bratislava, SlovakiaSlovak Univ Technol Bratislava, Fac chem & Food Technol, Dept Biochem Technol, SK-81237 Bratislava, Slovakia
机构:
Virginia Polytech Inst & State Univ, Dept Biochem 0308, Blacksburg, VA 24061 USAVirginia Polytech Inst & State Univ, Dept Biochem 0308, Blacksburg, VA 24061 USA
Phillips, Katherine M.
Ruggio, David M.
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Virginia Polytech Inst & State Univ, Dept Biochem 0308, Blacksburg, VA 24061 USAVirginia Polytech Inst & State Univ, Dept Biochem 0308, Blacksburg, VA 24061 USA
Ruggio, David M.
Howe, Juliette C.
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机构:
ARS, USDA, Beltsville Human Nutr Res Ctr, Nutrient Data Lab, Beltsville, MD 20705 USAVirginia Polytech Inst & State Univ, Dept Biochem 0308, Blacksburg, VA 24061 USA
Howe, Juliette C.
Leheska, Jennifer M.
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机构:
Natl Cattlemens Beef Assoc, Centennial, CO 80112 USAVirginia Polytech Inst & State Univ, Dept Biochem 0308, Blacksburg, VA 24061 USA
Leheska, Jennifer M.
Smith, Stephen B.
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机构:
Texas A&M Univ, Dept Anim Sci, College Stn, TX 77843 USAVirginia Polytech Inst & State Univ, Dept Biochem 0308, Blacksburg, VA 24061 USA
Smith, Stephen B.
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h-index:
机构:
Engle, Terry
Rasor, Amy S.
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Virginia Polytech Inst & State Univ, Dept Biochem 0308, Blacksburg, VA 24061 USAVirginia Polytech Inst & State Univ, Dept Biochem 0308, Blacksburg, VA 24061 USA
Rasor, Amy S.
Conley, Nancy A.
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Virginia Polytech Inst & State Univ, Dept Biochem 0308, Blacksburg, VA 24061 USAVirginia Polytech Inst & State Univ, Dept Biochem 0308, Blacksburg, VA 24061 USA