Biosynthesis oftrans fatty acids in ruminants

Trans Fatty Acids in Human Nutrition: Second Edition

Volumn , Issue , 2009, Pages 1-42

  Enjalbert, Francis ^a,b   Troegeler Meynadier, Annabelle ^a,b  

^a UNIVERSITÉ DE TOULOUSE   (France)

^b CEMAGREF   (France)

Author keywords

[No Author keywords available]

Indexed keywords

BIOCHEMISTRY; MAMMALS;

FATTY ACIDS;

EID: 77949281697     PISSN: None     EISSN: None     Source Type: Book    
DOI: 10.1533/9780857097873.1     Document Type: Chapter

References (216)

1. AbuGhazaleh A.A., Jacobson B.N. The effect of pH and polyunsaturated C18 fatty acid source on the production of vaccenic acid and conjugated linoleic acids in ruminal cultures incubated with docosahexaenoic acid. Anim. Feed Sci. Technol 2007, 136:11-22.
2. AbuGhazaleh A.A., Jacobson B.N. Production oftrans C18:1 and conjugated linoleic acid in continuous culture fermenters fed diets containing fish oil and sunflower oil with decreasing levels of forage. Animal 2007, 1:660-665.
3. AbuGhazaleh A.A., Jenkins T.C. Disappearance of docosahexaenoic and eicosapentaenoic acids from cultures of mixed ruminal microorganisms. J. Dairy Sci 2004, 87:645-651.
4. AbuGhazaleh A.A., Jenkins T.C. Short communication: docosahexaenoic acid promotes vaccenic acid accumulation in mixed ruminal cultures when incubated with linoleic acid. J. Dairy Sci 2004, 87:1047-1050.
5. AbuGhazaleh A.A., Riley M.B., Thies E.E., Jenkins T.C. Dilution rate and pH effects on the conversion of oleic acid totrans C18:1 positional isomers in continuous cultures. J. Dairy Sci 2005, 88:4334-4341.
6. Akraim F., Nicot M.C., Juaneda P., Enjalbert F. Conjugated linolenic acid (CLnA), conjugated linoleic acid (CLA), and other biohydrogenation intermediates in plasma and milk fat of cows fed raw or extruded linseed. Animal 2007, 1:835-843.
7. Akraim F., Nicot M.C., Weill P., Enjalbert F. Effects of preconditioning and extrusion of linseed on the ruminal biohydrogenation of fatty acids. 1.In vivo studies. Anim. Res 2006, 55:83-91.
8. Akraim F., Nicot M.C., Weill P., Enjalbert F. Effects of preconditioning and extrusion of linseed on the ruminal biohydrogenation of fatty acids. 2.In vitro and in situ studies. Anim. Res 2006, 55:261-271.
9. Annison E.F., Linzell J.L., Fazakerley S., Nichols B.W. The oxidation and utilization of palmitate, stearate, oleate and acetate by the mammary gland of the fed goat in relation to their overall metabolism, and the role of plasma phospholipids and neutral lipids in milk-fat synthesis. Biochem. J 1967, 102:637-647.
10. Ashes J.R., Siebert B.D., Gulati S.K., Cuthbertson A.Z., Scott T.W. Incorporation ofn-3 fatty acids of fish oil into tissue and serum lipids or ruminants. Lipids 1992, 27:629-631.
11. Atkinson R.L., Scholljegerdes E.J., Lake S.L., Nayigihugu V., Hess B.W., Rule D.C. Site and extent of digestion, duodenal flow, and intestinal disappearance of total and esterified fatty acids in sheep fed a high-concentrate diet supplemented with high-linoleate safflower oil. J. Anim. Sci 2006, 84:387-396.
12. Bauchart D., Legay-Carmier F., Doreau M. Ruminal hydrolysis of dietary triglycerides in dairy cows fed lipid-supplemented diets. Reprod. Nutr. Dev 1990, 30:187s. suppl.
13. Bauchart D., Legay-Carmier F., Doreau M., Gaillard B. Lipid metabolism of liquid-associated and solid-adherent bacteria in rumen contents of dairy cows offered lipid-supplemented diets. Br. J. Nut 1990, 63:563-578.
14. Bauman D.E., Barbano D.M., Dwyer D.A., Griinari J.M. Technical note: production of butter with enhanced conjugated linoleic acid for use in biomedical studies with animal models. J. Dairy Sci 2000, 83:2422-2425.
15. Bayourthe C., Enjalbert F., Moncoulon R. Effects of different forms of canola oil fatty acids plus canola meal on milk composition and physical properties of butter. J. Dairy Sci 2000, 83:690-696.
16. Beam T.M., Jenkins T.C., Moate P.J., Kohn R.A., Palmquist D.L. Effects of amount and source of fat on the rates of lipolysis and biohydrogenation of fatty acids in ruminal contents. J. Dairy Sci 2000, 83:2564-2573.
17. Bell J.A., Griinari J.M., Kennelly J.J. Effect of safflower oil, flaxseed oil, monensin and vitamin E on concentration of conjugated linoleic acid in bovine milk fat. J. Dairy Sci 2006, 89:733-748.
18. Bickerstaffe R., Noakes D.E., Annison E.F. Quantitative aspects of fatty acids biohydrogenation, absorption and transfer into milk in the lactating goat, with special reference to thecis- andtrans-isomers of octadecenoate and linoleate. Biochem. J 1972, 130:607-617.
19. Bitman J., Dryden L.P., Goering H.K., Wrenn T.R., Yoncoskie R.A., Edmondson L.F. Efficiency of transfer of polyunsaturated fats into milk. J. Amer. Oil Chem. Soc 1973, 50:93-98.
20. Boeckaert C., Fievez V., Van Hecke D., Verstraete W., Boon N. Changes in rumen biohydrogenation intermediates and ciliate protozoa diversity after algae supplementation to dairy cattle. Eur. J. Lipid Sci. Technol 2007, 109:767-777.
21. Boeckaert C., Vlaeminck B., Mestdagh J., Fievez V. In vitro examination of DHA-edible micro algae. 1. Effect on rumen lipolysis and biohydrogenation of linoleic and linolenic acids. Anim. Feed Sci. Technol 2007, 136:63-79.
22. Bradford B.J., Allen M.S. Milk fat responses to a change in diet fermentability vary by production level in dairy cattle. J. Dairy Sci 2004, 87:3800-3807.
23. Brooks C.C., Garner G.B., Gehrke C.W., Muhrer M.E., Pfander W.H. The effect of added fat on the digestion of cellulose and protein by ovine rumen micoorganisms. J. Anim. Sci 1954, 13:758-764.
24. Carroll S.M., Depeters E.J., Rosenberg M. Efficacy of a novel whey protein gel complex to increase the unsaturated fatty acids composition of bovine milk fat. J. Dairy Sci 2006, 89:640-650.
25. Chilliard Y., Ferlay A. Dietary lipids and forages interactions on cow and goat milk fatty acid composition and sensory properties. Reprod. Nutr. Dev 2004, 44:467-492.
26. Choi N.J., Imm J.Y., Oh S., Kim B.C., Hwang H.J., Kim Y.J. Effect of pH and oxygen on conjugated linoleic acid (CLA) production by mixed rumen bacteria from cows fed high concentrate and high forage diets. Anim. Feed Sci. Technol 2005, 123-124:643-653.
27. Chouinard P.Y., Corneau L., Butler R.W., Chilliard Y., Drackley J.K., Bauman D.E. Effect of dietary lipid source on conjugated linoleic acid concentration in milk fat. J. Dairy Sci 2001, 84:680-690.
28. Chouinard P.Y., Girard V., Brisson G.J. Performance and profiles of milk fatty acids of cows fed full fat, heat-treated soybeans using various processing methods. J. Dairy Sci 1997, 80:334-342.
29. Chouinard P.Y., Levesque J., Girard V., Brisson G.J. Dietary soybeans extruded at different temperatures: milk composition and in situ reactions. J. Dairy Sci 1997, 80:2913-2924.
30. Chow T.T., Fievez V., Moloney A.P., Raes K., Demeyer D., De Smet S. Effect of fish oil onin vitro lipolysis, apparent biohydrogenation of linoleic and linolenic acids, and accumulation of biohydrogenation intermediates. Anim. Feed Sci. Technol 2004, 117:1-12.
31. Clapperton J.L. Biohydrogenation of protected soya-bean oil in sheep fed a low-fibre diet. Proc. Nutr. Soc 1978, 37:65A.
32. Clapperton J.L. The extent of hydrogenation of two formaldehyde-treated spray-dried mixtures of soya bean oil and casein fed to sheep. J. Sci. Food Agric 1980, 31:439-447.
33. Collomb M., Sieber R., Bütikofer U. CLA isomers in milk fat from dairy cows fed diets with high levels of unsaturated fatty acids. Lipids 2004, 39:355-364.
34. Corl B.A., Baumgard B.H., Griinari J.M., Delmonte P., Morehouse K.M., Yurawecz M.P., Bauman D.E. Trans-7,cis-9 CLA is synthesized endogenously by delta9 desaturase in dairy cows. Lipids 2002, 37:681-688.
35. Cruz-Hernandez C., Kramer J.K.G., Kennelly J.J., Okine E.K., Weselake R.J. Effect of sunflower oil and monensin on the CLA and 18:1 isomer composition in milk fat of dairy cattle 2006, Fourth Euro Fed Lipid Congress, Madrid.
36. Davison K.L., Woods W. Effect of calcium and magnesium upon digestibility of a ration containing corn oil by lambs. J. Anim. Sci 1963, 22:27-29.
37. Dawson R.M.C., Hemington N., Grime D., Lander D., Kemp P. Lipolysis and hydrogenation of galactolipids and the accumulation of phytanic acid in the rumen. Biochem. J 1974, 144:169-171.
38. Dawson R.M.C., Kemp P. The effect of defaunation on the phospholipids and on the hydrogenation of unsaturated fatty acids in the rumen. Biochem. J 1969, 115:351-352.
39. Demeyer D.L., Henderson C., Prins R.A. Relative significance of exogenous and de novo synthesized fatty acids in the formation of rumen microbial lipids. in vitro. Appl. Environment. Microbiol 1978, 35:24-31.
40. Deng M.D., Grund A.D., Schneider K.J., Langley K.M., Wassink S.L., Peng S.S., Rosson R.A. Linoleic acid isomerase fromPropionibacterium acnes: purification, characterization, molecular cloning, and heterologous expression. Appl. Biochem. Biotechnol 2007, 143:199-211.
41. Destaillats F., Trottier J.P., Galvez J.M.G., Angers P. Analysis of alpha-linolenic acid biohydrogenation intermediates in milk fat with emphasis on conjugated linolenic acids. J. Dairy Sci 2005, 88:3231-3239.
42. Deveth M.J., Gulati S.K., Luchini N.D., Bauman D.E. Comparison of calcium-salts and formaldehyde-protected conjugated linoleic acid in inducing milk fat depression. J. Dairy Sci 2005, 88:1685-1693.
43. Devillard E., Mcintosh F.M., Newbold C.J., Wallace R.J. Rumen ciliate protozoa contain high concentrations of conjugated linoleic acids and vaccenic acid, yet do not hydrogenate linoleic acid or desaturate stearic acid. Br. J. Nutr 2006, 96:697-704.
44. Dewhurst R.J., Evans R.T., Scollan N.D., Moorby J.M., Merry R.J., Wilkins R.J. Comparison of grass and legume silages for milk production. 2.In vivo and in sacco evaluations of rumen function. J. Dairy Sci 2003, 85:2612-2621.
45. Dierick N.A., Decuypere J.A. Endogenous lipolysis in feedstuffs and compound feeds for pigs: effects of storage time and conditions and lipase and/or emulsifier addition. Anim. Feed Sci. Technol 2006, 102:53-70.
46. Dohme F., Fievez V., Raes K., Demeyer D.I. Increasing levels of two different fish oils lower ruminal biohydrogenation of eicosapentaenoic and docosahexaenoic acids. in vitro. Anim. Res 2003, 52:309-320.
47. Doreau M., Chilliard Y. Digestion and metabolism of dietary fat in farm animals. Br. J. Nutr 1997, 78(suppl. 1):S15-S35.
48. Doreau M., Ferlay A. Digestion and utilisation of fatty acids by ruminants. Anim. Feed Sci. Techn 1994, 45:379-396.
49. Doreau M., Lee M.R.F., Ueda K., Scollan N.D. Métabolisme ruminal et digestibilité des acides gras des fourrages. Renc. Rech. Ruminants 2005, 12:101-104.
50. Duckett S.K., Andrae J.G., Owens F.N. Effects of high oil corn or added corn oil on ruminal biohydrogenation of fatty acids and conjugated linoleic acid formation in beef steers fed finishing diets. J. Anim. Sci 2002, 80:3353-3360.
51. Engle T.E., Spears J.W., Fellner V., Odle J. Effects of soybean oil and dietary copper on ruminal and tissue lipid metabolism in finishing steers. J. Anim. Sci 2000, 78:2713-2721.
52. Enjalbert F. Les lipides dans l'alimentation des ruminants. 2. Particularités de l'utilisation digestive. Rev. Méd. Vét 1995, 146:383-392.
53. Enjalbert F., Akraim F., Juaneda P., Troegeler-Meynadier A., Nicot M.C. Cis-15 intermediates of biohydrogenation in the duodenal flow of cows receiving linseed 2006, Fourth Euro Fed Lipid Congress, Madrid.
54. Enjalbert F., Eynard P., Nicot M.C., Troegeler-Meynadier A., Bayourthe C., Moncoulon R. In vitro versus in situ ruminal biohydrogenation of unsaturated fatty acids from a raw or extruded mixture of ground canola seed/canola meal. J. Dairy Sci 2003, 86:351-359.
55. Enjalbert F., Nicot M.C., Bayourthe C., Vernay M., Moncoulon R. Effects of dietary calcium soaps of unsaturated fatty acids on digestion, milk composition and physical properties of butter. J. Dairy Res 1997, 64:181-195.
56. Enjalbert F., Nicot M.C., Vernay M., Moncoulon R., Griess D. Effect of different forms of polyunsaturated fatty acids on duodenal and serum fatty acids profiles in sheep. Can. J. Anim. Sci 1994, 74:595-600.
57. Fellner V., Sauer F.D., Kramer J.K.G. Effect of nigericin, monensin, and tetronasin on biohydrogenation in continuous flow-through ruminal fermenters. J. Dairy Sci 1997, 80:921-928.
58. Ferlay A., Chabrot J., Elmeddah Y., Doreau M. Ruminal lipid balance and intestinal digestion by dairy cows fed calcium salts of rapeseed oil fatty acids or rapeseed oil. J. Anim. Sci 1993, 71:2237-2245.
59. Ferlay A., Chilliard Y., Doreau M. Effects of calcium salts differing in fatty acid composition on duodenal and milk fatty acid profiles in dairy cows. J. Sci. Food Agric 1992, 60:31-37.
60. Fievez V., Vlaeminck B., Jenkins T., Enjalbert F., Doreau M. Assessing rumen biohydrogenation and its manipulationin vivo, in vitro and in situ. Eur. J. Lipid Sci. Technol 2007, 109:740-756.
61. Fotouhi N., Jenkins T.C. Ruminal biohydrogenation of linoleoyl methionine and calcium linoleate in sheep. J. Anim. Sci 1992, 70:3607-3614.
62. Franklin S.T., Martin K.R., Baer R.J., Shingoethe D.J., Hippen A. Dietary marine algae (Schizochytrium sp.) increases concentrations of conjugated linoleic, docosahexaenoic and transvaccenic acids in milk of dairy cows. J. Nutr 1999, 129:2048-2052.
63. Fukuda S., Furuya H., Suzuki Y., Asanuma N., Hino T. A new strain ofButyrivibrio fibrisolvens that has high ability to isomerize linoleic acid to conjugated linoleic acid. J. Gen. Appl. Microbiol 2005, 51:105-113.
64. Fukuda S., Suzuki Y., Komiri T., Kawamura K., Asanuma N., Hino T. Purification and gene sequencing of conjugated linoleic acid reductase from a gastrointestinal bacterium. Butyrivibrio fibrisolvens. J. Appl. Microbiol 2006, 103:365-371.
65. Fukuda S., Suzuki Y., Murai M., Asanuma N., Hino T. Isolation of a novel strain ofButyrivibrio fibrisolvens that isomerizes linoleic acid to conjugated linoleic acid without hydrogenation, and its utilization as a probiotic for animals. J. Appl. Microbiol 2006, 100:787-794.
66. Fukuda S., Suzuki Y., Murai M., Asanuma N., Hino T. Augmentation of vaccenate production and suppression of vaccenate biohydrogenation in cultures of mixed ruminal microbes. J. Dairy Sci 2006, 89:1043-1051.
67. Garton G.A., Hobson P.N., Lough A.K. Lipolysis in the rumen. Nature 1958, 182:1511-1512.
68. Gerson T., John A., King A.S.D. The effects of dietary starch and fibre on thein vitro rates of lipolysis and biohydrogenation by sheep ruminal digesta. J. Agric. Sci. (Camb.) 1985, 105:27-30.
69. Gerson T., John A., Sinclair B.R. The effect of dietary N onin vitro lipolysis and fatty acid hydrogenation in rumen digesta from sheep fed diets high in starch. J. Agric. Sci. (Camb.) 1983, 101:97-101.
70. Gerson T., King A.S.D., Kelly K.E., Kelly W.J. Influence of particle size and surface area onin vitro rates of gas production, lipolysis of triglycerol and hydrogenation of linoleic acid by sheep rumen digesta or. Ruminococcus flavefaciens. J. Agric. Sci. (Camb.) 1988, 110:31-37.
71. Girard V., Hawke J.C. The role of holotrichs in the metabolism of dietary linoleic acid in the rumen. Biochim. Biophys. Acta 1978, 528:17-27.
72. Glasser F., Schmidely P., Sauvant D., Doreau M. Digestion of fatty acids in ruminants: a meta-analysis of flows and variation factors: 2. C18 fatty acids. Animal 2008, 2:691-704.
73. Gonthier C., Mustafa A.F., Berthiaume R., Petit H.V., Ouellet D.R. Feeding micronized and extruded flaxseed to dairy cows: effects on digestion and ruminal biohydrogenation of long-chain fatty acids. Can. J. Anim. Sci 2004, 84:705-711.
74. Gonthier C., Mustafa A.F., Ouellet D.R., Chouinard P.Y., Bertiaume R., Petit H.V. Feeding micronized and extruded flaxseed to dairy cows: effects on blood parameters and milk fatty acid composition. J. Dairy Sci 2005, 88:748-756.
75. Griinari J.M., Bauman D.E. Advances in conjugated linoleic acid research. Biosynthesis of conjugated linoleic acid. 1999, 180-200. AOCS Press, Champaign, Illinois, USA, Vol.1. M.P. Yurawecz, M.M. Mossoba, J.K.G. Kramer, M.W. Pariza, G.J. Nelson (Eds.).
76. Griinari J.M., Dwyer D.A., Mcguire M.A., Bauman D.E., Palmquist D.L., Nurmela K.V. Trans-octadecenoic acids and milk fat depression in lactating dairy cows. J. Dairy Sci 1998, 81:1251-1261.
77. Gulati S.K., Ashes J.R., Scott T.W. Hydrogenation of eicosapentaenoic and docosahexaenoic acids and their incorporation into milk fat. Anim. Feed Sci. Technol 1999, 79:57-64.
78. Gulati S.K., Kitessa S.M., Ashes J.R., Fleck E., Byers E.B., Byers Y.G., Scott T.W. Protection of conjugated linoleic acids from ruminal hydrogenation and their incorporation into milk fat. Anim. Feed Sci. Technol 2000, 86:139-148.
79. Halliwell G., Bryant M.P. The cellulolytic activity of pure stains of bacteria from the rumen of cattle. J. Gen. Microbiol 1963, 32:441-448.
80. Harfoot C.G. Lipid metabolism in the rumen. Prog. Lipid Res 1978, 17:21-54.
81. Harfoot C.G., Hazlewood G.P. The rumen microbial ecosystem. Lipid metabolism in the rumen. 1997, 382-426. Chapman and Hall, London, UK. P.N. Hobson, D.S. Stewart (Eds.).
82. Harfoot C.G., Noble R.C., Moore J.H. Food particles as a site for biohydrogenation of unsaturated fatty acids in the rumen (short communication). Biochem. J 1973, 132:829-832.
83. Harfoot C.G., Noble R.C., Moore J.H. Factors influencing the extent of biohydrogenation of linoleic acid by rumen micro-organisms. in vitro. J. Sci. Food. Agric 1973, 24:961-970.
84. Hart S.P., Polan C.E. Effect of sodium bicarbonate and disodium phosphate on animal performance, ruminal metabolism, and rate of passage in ruminating calves. J. Dairy Sci 1984, 67:2356-2368.
85. Harvatine K.J., Allen M.S. Fat supplements affect fractional rates of ruminal fatty acid biohydrogenation and passage in dairy cows. J. Nutr 2006, 136:677-685.
86. Hawke J.C., Silcock W.R. Lipolysis and hydrogenation in the rumen. Biochem. J 1969, 112:131-132.
87. Hawke J.C., Silcock W.R. Thein vitro rate of lipolysis and biohydrogenation in rumen contents. Bioch. Bioph. Acta 1970, 218:201-212.
88. Hazlewood G.P., Kemp P., Lander D., Dawson R.M.C. C18 unsaturated fatty acid hydrogenation patterns of some rumen bacteria and their ability to hydrolyse exogenous phospholipids. Br. J. Nutr 1976, 35:293-297.
89. Heguy J.M., Juchem S.O., Depeters E.J., Rosenberg M., Santos J.E.P., Taylor S.J. Whey protein gel composites of soybean and linseed oils as a dietary method to modify the unsaturated fatty acid composition of milk lipids. Anim. Feed Sci. Technol 2006, 131:370-388.
90. Henderson C. A study of the lipase produced byAnaerovibrio lipolytica, a rumen bacterium. J. Gen. Microbiol 1971, 65:81-89.
91. Hino T., Fukuda S. Biohydrogenation of linoleic and linolenic acids, and production of their conjugated isomers by Butyrivibrio fibrisolvens 2006, Fourth Euro Fed Lipid Congress, Madrid.
92. Hobson P.N. Continuous culture of some anaerobic and facultatively anaerobic rumen bacteria. J. Gen. Microbiol 1965, 38:167-180.
93. Hudson J.A., Cai Y., Corner R.J., Morvan B., Joblin K.N. Identification and enumeration of oleic acid and linoleic acid hydrating bacteria in the rumen of sheep and cows. J. Appl. Microbiol 2000, 88:286-292.
94. Hudson J.A., Mackenzie C.A.M., Joblin K.N. Conversion of oleic acid to 10-hydroxystearic acid by two species of ruminal bacteria. Appl. Microbiol. Biotechnol 1995, 44:1-6.
95. Hudson J.A., Morvan B., Joblin K.N. Hydration of linoleic acid by bacteria isolated from ruminants. FEMS Microbiol. Letters 1998, 169:277-282.
96. Hughes P.E., Hunter W.J., Toce S.B. Biohydrogenation of unsaturated fatty acids. Purification and properties ofcis9,trans11 octadecadienoate reductase. J. Biol. Chem 1982, 257:3643-3649.
97. Jenkins T.C. Ruminal fermentation and nutrient digestion in sheep fed hydroxyethylsoyamide. J. Anim. Sci 1997, 75:2277-2283.
98. Jenkins T.C. Fatty acid composition of milk from Holstein cows fed oleamide or canola oil. J. Dairy Sci 1998, 81:794-800.
99. Jenkins T.C., AbuGhazaleh A.A., Freeman S., Thies E.J. The production of 10-hydroxystearic and 10-ketostearic acids is an alternative route of oleic acid transformation by the ruminal microbiota in cattle. J. Nutr 2006, 136:926-931.
100. Jenkins T.C., Adams C.S. The biohydrogenation of linoleamidein vitro and its effects on linoleic acid concentration in duodenal content of sheep. J. Anim. Sci 2002, 80:533-540.
101. Jenkins T.C., Bridges W.C. Protection of fatty acids against ruminal biohydrogenation in cattle. Eur. J. Lipid Sci. Technol 2007, 109:778-789.
102. Jenkins T.C., Fellner V., Mcguffey R.K. Monensin by fat interaction ontrans fatty acids in cultures of mixed ruminal microorganisms grown in continuous fermentors fed corn or barley. J. Dairy Sci 2003, 86:324-330.
103. Jenkins T.C., Palmquist D.L. Effect of added fat and calcium onin vitro formation of insoluble fatty acid soaps and cell wall digestibility. J. Anim. Sci 1982, 55:957-963.
104. Jenkins T.C., Palmquist D.L. Effects of fatty acids or calcium soaps on rumen and total nutrient digestibility of dairy rations. J. Dairy Sci 1984, 67:978-986.
105. Jenkins T.C., Thies E. Plasma fatty acids in sheep fed hydroxyethylsoyamide, a fatty acid amide that resists biohydrogenation. Lipids 1997, 32:173-178.
106. Jenkins T.C., Thompson C.E., Bridges W.C. Site of administration and duration of feeding oleamide to cattle on feed intake and ruminal fatty acid concentrations. J. Anim. Sci 2000, 78:2745-2753.
107. Jenkins T.C., Wallace R.J., Moate P.J., Mosley E.E. Board-invited review: Recent advances in biohydrogenation of unsaturated fatty acids within the rumen microbial ecosystem. J. Anim. Sci 2008, 86:397-412.
108. Jouany J.P., Lassalas B., Doreau M., Glasser F. Dynamic features of the rumen metabolism of linoleic acid, linolenic acid and linseed oil measured. in vitro. Lipids 2007, 42:351-360.
109. Jurjanz S., Monteils V., Juaneda P., Laurent F. Variations oftrans octadecenoic acid in milk fat induced by feeding different starch based diets to cows. Lipids 2004, 39:19-24.
110. Kalscheur K.F., Teter B.B., Piperova L.S., Erdman R.A. Effect of dietary forage concentration and buffer addition on duodenal flow oftrans-C18:1 fatty acids and milk fat production in dairy cows. J. Dairy Sci 1997, 80:2104-2114.
111. Kalscheur K.F., Teter B.B., Piperova L.S., Erdman R.A. Effect of fat source on duodenal flow oftrans-C18:1 fatty acids and milk fat production in dairy cows. J. Dairy Sci 1997, 80:2115-2126.
112. Kay J.K., Roche J.R., Solver E.S., Thomson N.A., Baumgard L.H. A comparison between feeding systems (pasture and TMR) and the effect of vitamin E supplementation on plasma and milk fatty acid profiles in dairy cows. J. Dairy Res 2005, 72:322-332.
113. Kemp P., Dawson R.M.C. Isomerization of linolenic acid by rumen microorganisms. Biochem. J 1968, 109:477-478.
114. Kemp P., Lander D.J. Hydrogenationin vitro of alpha-linolenic acid to stearic acid by mixed cultures of pure strains of rumen bacteria. J. Gen. Microbiol 1984, 130:527-533.
115. Kemp P., Lander D.J., Gunstone F.D. The biohydrogenation of gamma-linolenic acid to stearic acid by pure cultures of two rumen bacteria. Biochem. J 1983, 216:519-522.
116. Kemp P., Lander D.J., Gunstone F.D. The hydrogenation of somecis- andtrans-octadecenoic acids to stearic acid by a rumenFusocillsu sp. Brit. J. Nutr 1984, 52:165-170.
117. Kemp P., White R.R., Lander D.J. The hydrogenation of unsaturated fatty acids by five bacterial isolates from the sheep rumen, including a new species. J. Gen. Microbiol 1975, 90:100-114.
118. Kepler C.R., Hirons K.P., Mcneill J.J., Tove S.B. Intermediates and products of the biohydrogenation of linoleic acid by. Butryrivibrio fibrisolvens. J. Biol. Chem 1966, 241:1350-1354.
119. Kepler C.R., Tove S.B. Biohydrogenation of unsaturated fatty acids: purification and properties of a linoleate δ12cis- δ11trans isomerase from. Butyrivibrio fibrisolvens. J. Biol. Chem 1967, 242:5686-5692.
120. Kepler C.R., Tucker W.P., Tove S.B. Biohydrogenation of unsaturated fatty acids. IV. Substrate specificity and inhibition of linoleate delta12-cis, delta11-trans isomerase from. Butyrivibrio fibrisolvens. J. Biol. Chem 1970, 245:3612-3620.
121. Kim E.J., Huws S.A., Lee M.R.F., Wood J.D., Muetzel S.M., Wallace R.J., Scollan N.D. Fish oil increases the duodenal flow of long chain polyunsaturated fatty acids andtrans-11 18:1 and decreases 18:0 in steers via changes in the rumen bacterial community. J. Nutr 2008, 138:889-896.
122. Kim E.J., Sanderson R., Dhanoa M.S., Dewhurst R.J. Fatty acids profiles associated with microbial colonization of freshly ingested grass and rumen biohydrogenation. J. Dairy Sci 2005, 88:3220-3230.
123. Kim Y.J., Liu R.H., Bond D.R., Russel J.B. Effect of linoleic acid concentration on conjugated linoleic acid production by. Butyrivibrio fibrisolvens. Appl. Environ. Microbiol 2000, 66:5226-5230.
124. Kim Y.J., Liu R.H., Rychlik J.L., Russel J.B. The enrichment of a ruminal bacterium (Megasphaera elsdenii YJ-4) that produces thetrans-10,cis-12 isomer of conjugated linoleic acid. J. Appl. Microbiol 2002, 92:976-982.
125. Kraft J., Collomb M., Mockel P., Sieber, Jarheis R.G. Differences in CLA isomer distribution of cow's milk lipids. Lipids 2003, 38:657-664.
126. Kramer J.P.G., Parodi P.W., Jensen R.G., Mossoba M.M., Yurawecz M.P., Adlof R.O. Rumenic acid: a proposed common name for the major conjugated linoleic acid isomer found in natural products. Lipids 1998, 33:835.
127. Kronberg S.L., Schollegerdes E.J., Barcelo-Coblijn G., Murphy E.J. Flaxseed treatments to reduce biohydrogenation of alpha-linolenic acid by rumen microbes in cattle. Lipids 2007, 42:1105-1111.
128. Kucuk O., Hess B.W., Ludden P.A., Rule D.C. Effect of forage:concentrate ratio on ruminal digestion and duodenal flow of fatty acids in ewes. J. Anim. Sci 2001, 79:2233-2240.
129. Kucuk O., Hess B.W., Rule D.C. Fatty acid compositions of mixed ruminal microbes isolated from sheep supplemented with soybean oil. Res. Vet. Sci 2008, 84:215-224.
130. Latham M.J., Storry J.E., Sharpe E. Effect of low-roughage diets on the microflora and lipid metabolism in the rumen. Appl. Microbiol 1972, 24:871-877.
131. Lee M.R.F., Connelly P.L., Tweed J.K.S., Dewhurst R.J., Merry R.J., Scollan N.D. Effects of high-sugar ryegrass silage and mixtures with red clover silage on ruminant digestion. 2. Lipids. J. Anim. Sci 2006, 84:3061-3070.
132. Lee M.R.F., Harris L.J., Dewhurst R.J., Merry R.J., Scollan N.D. The effect of clover silages on long chain fatty acid rumen transformations and digestion in beef steers. Anim. Sci 2003, 76:491-501.
133. Lee M.R.F., Huws S.A., Scollan N.D., Dewhurst R.J. Effects of fatty acids oxidation products (green odor) on rumen bacterial populations and lipid metabolism. in vitro. J. Dairy Sci 2007, 90:3874-3882.
134. Lee M.R.F., Parfitt L.J., Scollan N.D., Minchin F.R. Lipolysis in red-clover with different polyphenol oxidase activities in the presence and absence of rumen fluid. J. Sci. Food Agr 2007, 87:1308-1314.
135. Lee M.R.F., Tweed J.K.S., Dewhurst R.J., Scollan N.D. Effect of forage:concentrate ratio on ruminal metabolism and duodenal flow of fatty acids in beef steers. Anim. Sci 2006, 82:31-40.
136. Lee M.R.F., Tweed J.K.S., Moloney A.P., Scollan N.D. The effects of fish oil supplementation on rumen metabolism and the biohydrogenation of unsaturated fatty acids in beef steers given diets containing sunflower oil. Anim. Sci 2005, 80:361-367.
137. Lee M.R.F., Winters A.L., Scollan N.D., Dewhurst R.J., Theodorou M.K., Minchin F.R. Plant-mediated lipolysis and proteolysis in red clover with different polyphenol oxidase activities. J. Sci. Food Agr 2004, 84:1639-1645.
138. Liavonchanka A., Hornung E., Feussner I., Rudolph M.G. Structure and mechanism of thePropionibacterium acnes polyunsaturated fatty acid isomerase. Proc. Natl. Acad. Sci 2006, 103:2576-2581.
139. Lock A.L., Garnsworthy P.C. Independent effects of linoleic and linolenic fatty acids on the conjugated linoleic acid content of cows' milk. Anim. Sci 2002, 74:163-176.
140. Loor J.J., Bandara A.B.P.A., Herbein J.H. Characterization of 18:1 and 18:2 isomers produced during microbial biohydrogenation of unsaturated fatty acids from canola and soya bean oil in the rumen of lactating cows. J. Anim. Physiol. Anim. Nutr 2002, 86:422-432.
141. Loor J.J., Ferlay A., Ollier A., Doreau M., Chilliard Y. Relationship amongtrans and conjugated fatty acids and bovine milk fat yield due to dietary concentrate and linseed oil. J. Dairy Sci 2005, 88:726-740.
142. Loor J.J., Ferlay A., Ollier A., Ueda K., Doreau M., Chilliard Y. High-concentrate diets and polyunsaturated oils altertrans and conjugated isomers in bovine rumen, blood and milk. J. Dairy Sci 2005, 88:3886-3899.
143. Loor J.J., Herbein J.H. Dietary canola or soybean oil with two levels of conjugated linoleic acid (CLA) alter profiles of 18:1 and 18:2 isomers in blood plasma and milk fat from dairy cows. Anim. Feed Sci., Technol 2003, 103:63-83.
144. Loor J.J., Herbein J.H., Jenkins T.C. Nutrient digestion, biohydrogenation, and fatty acid profiles in blood plasma and milk fat from lactating Holstein cows fed canola oil or canolamide. Anim. Feed Sci., Technol 2002, 97:65-82.
145. Loor J.J., Hoover W.H., Miller-Webster T.K., Herbein J.H., Polan C.E. Biohydrogenation of unsaturated fatty acids in continuous culture fermenters during digestion of orchardgrass or red clover with three levels of ground corn supplementation. J. Anim. Sci 2003, 81:1611-1627.
146. Loor J.J., Ueda K., Ferlay A., Chilliard Y., Doreau M. Biohydrogenation, duodenal flow, and intestinal digestibility oftrans fatty acids and conjugated linoleic acids in response to dietary forage:concentrate ratio and linseed oil in dairy cows. J. Dairy Sci 2004, 87:2472-2485.
147. Loor J.J., Ueda K., Ferlay A., Chilliard Y., Doreau M. Intestinal flow and digestibility oftrans fatty acids and conjugated linoleic acids (CLA) in dairy cows fed a high-concentrate diet supplemented with fish oil, linseed oil, and sunflower oil. Anim. Feed Sci. Technol 2005, 119:203-225.
148. Lundy F.P., Block E., Bridges W.C., Bertrand J.A., Jenkins T.C. Ruminal biohydrogenation in Holstein cows fed soybean fatty acids as amides or calcium salts. J. Dairy Sci 2004, 87:1038-1046.
149. Maia M.R.G., Chaudhary L.C., Figueres L., Wallace R.J. Metabolism of polyunsaturated fatty acids and their toxicity to the microflora of the rumen. Antonie Van Leeuwenhoek 2007, 91:303-314.
150. Martin S.A., Jenkins T.C. Factors affecting conjugated linoleic acid andtrans-C18:1 fatty acid production by mixed ruminal bacteria. J. Anim. Sci 2002, 80:3347-3352.
151. Martineau R., Petit H.V., Benchaar C., Lapierre H., Ouellet D.R., Pellerin D., Berthiaume R. Effects of lasalocid or monensin on in situ biohydrogenation of flaxseed and sunflower seed unsaturated fatty acids. Can. J. Anim. Sci 2008, 88:335-339.
152. Moate P.J., Boston R.C., Jenkins T.C., Lean I.J. Kinetics of ruminal lipolysis of triacylglycerol and biohydrogenation of long-chain fatty acids: new insights from old data. J. Dairy Sci 2008, 91:732-742.
153. Moate P.J., Chalupa W., Jenkins T.C., Boston R.C. A model to describe ruminal metabolism and intestinal absorption of long-chain fatty acids. Anim. Feed. Sci. Technol 2004, 112:79-105.
154. Morales M.S., Palmquist D.L., Weiss W.P. Effects of fat source and copper on unsaturatuon of blood and milk triacylglycerol fatty acids in Holstein and Jersey cows. J. Dairy Sci 2000, 83:2105-2111.
155. Morris L.J. Mechanisms and stereochemistry in fatty acid metabolism. Biochem. J 1970, 118:681-693.
156. Morvan B., Joblin K.N. Ruminal bacteria and hydration of long-chain unsaturated fatty acids. Reprod. Nutr. Dev 2001, 40:201. (Abstr.).
157. 13C]oleic acids by mixed ruminal microbes. Lipids 2006, 41:513-517.
158. Mosley E.E., Powell G.L., Riley M.B., Jenkins T.C. Microbial biohydrogenation of oleic acid totrans isomers. in vitro. J. Lipid Res 2002, 43:290-296.
159. Mosley E.E., Shafi B., Moate P.J., Mcguire M.A. Cis-9,trans-11 conjugated linoleic acid is synthesized directly from vaccenic acid in lactating dairy cattle. J. Nutr 2006, 135:571-575.
160. Nam I.S., Garnsworthy P.C. Biohydrogenation of linoleic acid by rumen fungi compared with rumen bacteria. J. Appl. Microbiol 2007, 103:551-556.
161. Noble R.C., Moore J.H., Harfoot C.G. Observations on the pattern of biohydrogenation of esterified and unesterified linoleic acid in the rumen. Br. J. Nutr 1974, 31:99-108.
162. Ogawa J., Kishino S., Ando A., Sugimoto S., Mihara K., Shimizu S. Production of conjugated fatty acids by lactic acid bacteria. J. Bioscience Bioengeneering 2005, 100:355-364.
163. Or-Rashid M.M., Odongo N.E., Mcbride B.W. Fatty acid composition of ruminal bacteria and protozoa, with emphasis on conjugated linoleic acid, vaccenic acid, and odd-chain and branched-chain fatty acids. J. Dairy Sci 2007, 85:1228-1234.
164. Paillard D., Mckain N., Chaudhary L.C.L., Walker N.D., Pizette F., Koppova I., Mcewan N.R., Kopecny J., Vercoe P.E., Louis P., Wallace R.J. Relation between phylogenetic position, lipid metabolism and butyrate production by different Butyrivibrio-like bacteria from the rumen. Antonie Van Leeuwenhoek 2007, 91:417-422.
165. Paillard D., Mckain N., Rincon M.T., Shingfield K.J., Givens D.I., Wallace R.J. Quantification of ruminalClostridium proteoclasticum by real-time PCR using a molecular beacon approach. J. Applied Microbiol 2007, 103:1251-1261.
166. Palmquist D.L., Lock A.L., Shingfield K.J., Bauman D.E. Advances in food and nutrition research. Biosynthesis of conjugated linoleic acid in ruminants and humans. 2005, 179-218. Elsevier, London, UK. S. Taylor (Ed.).
167. Park S.J., Park K.A., Park C.W., Park W.S., Kim J.O., Ha Y.L. Purification and amino acid sequence of the linoleate isomerase produced fromButyrivibrio fibrisolvens A38. J. Food Sci. Nutr 1996, 1:244-251.
168. Parodi P.W. Distribution of isomeric fatty acids in milk fat. J. Dairy Sci 1976, 59:1870-1873.
169. Peterson D.G., Kelsey J.A., Bauman D.E. Analysis of variations ofcis-9,trans-11 conjugated linoleic acid (CLA) in milk fat of dairy cows. J. Dairy Sci 2002, 85:2164-2172.
170. Piperova L.S., Sampugna J., Teter B.B., Kalscheur K.F., Yurawecz M.P., Ku Y., Morehouse K.M., Erdman R.A. Duodenal and milktrans octadecenoic acid and conjugated linoleic acid (CLA) isomers indicate that postabsorptive synthesis is the predominant source ofcis-9containing CLA in lactating dairy cows. J. Nutr 2002, 132:1235-1241.
171. Pires A.V., Eastridge M.L., Firkins J.L., Lin Y.C. Effects of heat treatment and physical processing of cottonseed on nutrient digestibility and production performance by lactating cows. J. Dairy Sci 1997, 80:1685-1694.
172. Polan C.E., Mcneill J.J., Tove C.B. Biohydrogenation of unsaturated fatty acids by rumen bacteria. J. Bacteriol 1964, 88:1056-1064.
173. Pottier J., Focant M., Debler C., De Buysser G., Goffe C., Mignolet E., Froidmond E., Larondelle Y. Effect of dietary vitamin E on rumen biohydrogenation pathways and milk fat depression in dairy cows fed high fat diets. J. Dairy Sci 2006, 89:685-692.
174. Prins R.A., Lankhorst A., Van Der Meer P., Van Nevel C.J. Some characteristices ofAnaerovibrio lipolytica, a rumen lipolytic organism. Antonie Van Leeuwenhoek 1975, 41:1-11.
175. Proell J.M., Mosley E.E., Powell G.L., Jenkins T.C. Isomerization of stable isotopically labeled elaidic acid tocis andtrans monoenes by ruminal microbes. J. Lipid Res 2002, 43:2072-2076.
176. Reddy P.V., Morril J.L., Nagaraja T.G. Release of free fatty acids from raw or processed soybeans and subsequent effects on fiber digestibilities. J. Dairy Sci 1994, 77:3410-3416.
177. Ribeiro C.V.D.M., Eastridge M.L., Firkins J.L., St-Pierre N.R., Palmquist D.L. Kinetics of fatty acid biohydrogenation. in vitro. J. Dairy Sci 2007, 90:1405-1416.
178. Ribeiro C.V.D.M., Karnati S.K.R., Eastridge M.L. Biohydrogenation of fatty acids and digestibility of fresh alfalfa or alfalfa hay plus sucrose in continuous cultures. J. Dairy Sci 2005, 88:4007-4017.
179. Romo G.A., Erdman R.A., Teter B.B., Sampugna J., Casper D.P. Milk composition and apparent digestibilities of dietary fatty acids in lactating dairy cows abomasally infused withcis ortrans fatty acids. J. Dairy Sci 2000, 83:2609-2619.
180. Roy A., Ferlay A., Shingfield K.J., Chilliard Y. Examination of the persistency of milk fatty acid composition responses to plant oils in cows fed different basal diets, with particular emphasis ontrans-C18:1 fatty acids and isomers of conjugated linoleic acid. Anim. Sci 2006, 82:479-492.
181. Sackman J.R., Duckett S.K., Gillis M.H., Realini C.E., Parks A.H., Eggelston R.B. Effects of forage and sunflower oil levels on ruminal biohydrogenation of fatty acids and conjugated linoleic acid formation in beef steers fed finishing diets. J. Anim. Sci 2003, 81:3174-3181.
182. Schmidely P., Glasser F., Doreau M., Sauvant D. Digestion of fatty acids in ruminants: a meta-analysis of flows and variation factors. 1. Total fatty acids. Animal 2008, 2:677-690.
183. Scollan N.D., Lee M.R.F., Enser M. Biohydrogenation and digestion of long chain fatty acids in steers fed onLolium perenne bred for elevated levels of water-soluble carbohydrate. Anim. Res 2003, 52:501-511.
184. Scott T.W., Cook L.J., Mills S.C. Protection of dietary polyunsaturated fatty acids against microbial hydrogenation in ruminants. J. Am. Oil Chem. Soc 1971, 48:358-364.
185. Sellner D.R., Schultz L.H. Effects of feeding oleic acid or hydrogenated vegetable oils to lactating cows. J. Dairy Sci 1980, 63:1235-1241.
186. Shingfield K.J., Ahvenjärvi S., Toivonen V., Ärölä A., Nurmela K.V.V., Huhtanen P., Griinari J.M. Effect of dietary ûsh oil on biohydrogenation of fatty acids and milk fatty acid content in cows. Anim. Sci 2003, 77:165-179.
187. Shingfield K.J., Ahvenjärvi S., Toivonen V., Vanhatalo A., Huhtanen P., Griinari J.M. Effect of incremental levels of sunflower-seed oil in the diet of ruminal lipid metabolism in lactating cows. Br. J. Nutr 2008, 99:971-983.
188. Shingfield K.J., Reynolds C.K., Hervas G., Griinari J.M., Grandison A.S., Beever D.E. Examination of the persistency of milk fatty acid composition responses to fish oil and sunflower oil in the diet of dairy cows. J. Dairy Sci 2006, 89:714-732.
189. Shingfield K.J., Reynolds C.K., Lupoli B., Toivonen V., Yurawecz M.P., Delmonte P., Griinari J.M., Grandison A.S., Beever D.E. Effect of forage type and proportion of concentrate in the diet on milk fatty acid composition in cows given sunflower and fish oil. Anim. Sci 2005, 80:225-238.
190. Sinclair L.A., Cooper S.L., Chikunya S., Wilkinson R.G., Hallett K.G., Enser M., Wood J.D. Biohydrogenation ofn-3 polyunsaturated fatty acids in the rumen and their effects on microbial metabolism and plasma fatty acid concentration in sheep. Anim. Sci 2005, 81:239-248.
191. Sinclair L.A., Cooper S.L., Huntington J.A., Wilkinson R.G., Hallett K.G., Enser M., Wood J.D. In vitro biohydrogenation ofn-3 polyunsaturated fatty acids protected against ruminal microbial metabolism. Anim. Feed Sci., Technol 2005, 123-124:579-593.
192. Sklan D., Arieli A., Chalupa W., Kronfeld D.S. Digestion and absorption of lipids and bile acids in sheep fed stearic acid, oleic acid, or tristearin. J. Dairy Sci 1985, 68:1667-1675.
193. Sukhija P.S., Palmquist D.L. Dissociation of calcium soaps of long-chain fatty acids in rumen fluids. J. Dairy Sci 1990, 73:1784-1787.
194. Thompson G.E., Christie W.W. Extraction of plasma triacylglycerols by the mammary gland of the lactating cow. J. Dairy Res 1991, 58:251-255.
195. Tice E.M., Eastridge M.L., Firkins J.L. Raw soybeans and roasted soybeans of different particle sizes. 2. Fatty acid utilization by lactating cows. J. Dairy Sci 1994, 77:166-180.
196. Troegeler-Meynadier A., Bret-Bennis L., Enjalbert F. Rates and efficiencies of reactions of ruminal biohydrogenation of linoleic acid according to pH and polyunsaturated fatty acids concentrations. Reprod. Nutr. Dev 2006, 46:713-724.
197. Troegeler-Meynadier A., Nicot M.C., Bayourthe C., Moncoulon R., Enjalbert F. Effects of pH and concentrations of linoleic and linolenic acids on extent and intermediates of ruminal biohydrogenation. in vitro. J. Dairy Sci 2003, 86:4054-4063.
198. Troegeler-Meynadier A., Nicot M.C., Enjalbert F. Effects of heating process of soybeans on ruminal production of conjugated linoleic acids andtrans-octadecenoic acids in situ. Rev; Méd. Vét 2006, 157:509-514.
199. Van De Vossenberg J.L.C.M., Joblin K.N. Biohydrogenation of C18 unsaturated fatty acids to stearic acid by a strain ofButyrivibrio hungatei from the bovine rumen. Letters Appl. Microbiol 2003, 37:424-428.
200. Van Nevel C.J., Demeyer D.I. Lipolysis and biohydrogenation of soybean oil in the rumenin vitro: inhibition by antimicrobials. J. Dairy Sci 1995, 78:2797-2806.
201. Van Nevel C.J., Demeyer D.I. Effect of pH on biohydrogenation of polyunsaturated datty acids and their Ca-salts by rumen microorganisms. in vitro. Arch. Anim. Nutr 1996, 49:151-157.
202. Van Nevel C.J., Demeyer D.I. Influence of pH on lipolysis and biohydrogenation of soybean oil by rumen contents. in vitro. Reprod. Nutr. Dev 1996, 36:53-63.
203. Vázquez-Añón M., Jenkins T.C. Effects of feeding oxidized fat with or without dietary antioxidants on nutrient digestibility, microbial nitrogen, and fatty acid metabolism. J. Dairy Sci 2007, 90:4361-4367.
204. Vlaeminck B., Mengitsu G., Fievez V., De Jonge L., Dijkstra J. Effect ofin vitro docosahexaenoic acid supplementation to marine algae-adapted and unadapted rumen inoculum on the biohydrogenation of unsaturated fatty acids in freeze-dried grass. J. Dairy Sci 2008, 91:1122-1232.
205. Wallace R.J. Gut microbiology - broad genetic diversity, yet specific metabolic niches. Animal 2008, 2:661-668.
206. Wallace R.J., Chaudhary L.C., Mckain N., Mcewan N.R., Richardson A.J., Vercoe P.E., Walker N.D., Paillard D. Clostridium proteoclasticum: a ruminal bacteria that forms stearic acid from linoleic acid. FEMS Microbiol. Lett 2006, 265:195-201.
207. Wallace R.J., Mckain N., Shingfield K.J., Devillard E. Isomers of conjugated linoleic acids are synthesized via different mechanisms in ruminal digesta and bacteria. J. Lipid Res 2007, 48:2247-2254.
208. Ward P.F.V., Scott T.W., Dawson R.M.C. The hydrogenation of unsaturated fatty acids in the ovine digestive tract. Biochem. J 1964, 92:60-68.
209. Wasowska I., Maia M.R.G., Niedzwiedzka K.M., Czauderna M., Ramalho-Ribeiro J.M.C., Devillard E., Shingfield K.J., Wallace R.J. Influence of fish oil on ruminal biohydrogenation of C18 unsaturated fatty acids. Br. J. Nutr 2006, 95:1199-1211.
210. Weimer P.J., Stevenson D.M., Mertens D.R., Thomas E.E. Effect of monensin feeding and withdrawal on populations of individual bacterial species in the rumen of lactating dairy cows fed high-starch rations. Applied Microbial Cell Physiol 2008, 80:135-145.
211. White R.W., Kemp P., Dawson M.C. Isolation of a rumen bacterium that hydrogenates oleic acid as well as linoleic acid and linolenic acid. Biochem. J 1970, 116:767-768.
212. Winkler K., Steinhart H. Identification of conjugated isomers of linolenic acid and arachidonic acid in cheese. J. Separation Sci 2001, 24:663-668.
213. Wonsil W.B., Herbein J.H., Watkins B.A. Dietary and ruminally derivedtrans-18:1 fatty acids alter bovine milk lipids. J. Nutr 1994, 124:556-565.
214. Wu Z., Ohajuruka A., Palmquist D.L. Ruminal synthesis, biohydrogenation, and digestibility of fatty acids by dairy cows. J. Dairy Sci 1991, 74:3025-3034.
215. Wu Z., Palmquist D.L. Synthesis and biohydrogenation of fatty acids by ruminal microorganisms. in vitro. J. Dairy Sci 1991, 74:3035-3046.
216. Yáñez-Ruiz D.R., Scollan N.D., Merry R.J., Newbold C.J. Contribution of rumen protozoa to duodenal flow of nitrogen, conjugated linoleic acid and vaccenic acid in steers fed silages differing in their water-soluble carbohydrate content. Br. J. Nutr 2006, 96:861-869.