JDS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Journal of Dairy Science Vol. 84 No. 4 929-936
© 2001 by American Dairy Science Association ®
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by DePeters, E. J.
Right arrow Articles by Perez-Monti, H.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by DePeters, E. J.
Right arrow Articles by Perez-Monti, H.

Fatty Acid and Triglyceride Composition of Milk Fat from Lactating Holstein Cows in Response to Supplemental Canola Oil

E. J. DePeters 1, J. B. German 2, S. J. Taylor 1, S. T. Essex 1, and H. Perez-Monti 1

1 Departments of Animal Science, University of California, Davis 95616-8521
2 Food Science and Technology, University of California, Davis 95616-8521

The objective was to determine the influence of dietary lipid on total and sn-2 fatty acid composition and triglyceride structure of milk fat in lactating Holstein cows. Five primiparous Holstein cows surgically fitted with ruminal and duodenal cannulas were used in a 4 x 5 incomplete Latin square. All cows received a basal diet. Treatments consisted of a basal diet with no supplemental canola oil (control), basal diet with canola oil added to the concentrate portion of the diet to provide 1.6% fat, basal diet with 330 g of canola oil infused directly into the rumen, and basal diet with 330 g of canola oil infused directly into the abomasum. Canola oil treatments decreased palmitic acid and increased oleic acid content of milk fat compared with the control. Stearate was higher when canola oil was rumen available compared with control and abomasal infusion. Abomasal infusion increased linoleic and linoleic acids in milk fat compared with the other treatments. The sn-2 fatty acid composition reflected total fatty acid composition. All canola oil treatments reduced palmitic acid and increased oleic acid content at the sn-2 position. Changes in sn-2 composition reflect specificity of the acyl transferases and substrate concentration. Triglyceride composition reported as carbon number was altered by canola oil. Triglycerides in carbon number C50, C52, and C54 were increased while C32, C34, and C36 were decreased.

Key Words: fatty acid • sn-2 • triglyceride • milk fat

Submitted on May 25, 2000
Accepted on November 10, 2000




This article has been cited by other articles:


Home page
 J DAIRY SCIHome page
F. Glasser, A. Ferlay, M. Doreau, P. Schmidely, D. Sauvant, and Y. Chilliard
Long-Chain Fatty Acid Metabolism in Dairy Cows: A Meta-Analysis of Milk Fatty Acid Yield in Relation to Duodenal Flows and De Novo Synthesis
J Dairy Sci, July 1, 2008; 91(7): 2771 - 2785.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
G. Ortiz-Gonzalez, R. Jimenez-Flores, D. R. Bremmer, J. H. Clark, E. J. DePeters, S. J. Schmidt, and J. K. Drackley
Functional Properties of Butter Oil Made from Bovine Milk with Experimentally Altered Fat Composition
J Dairy Sci, November 1, 2007; 90(11): 5018 - 5031.
[Abstract] [Full Text] [PDF]

Home page
 J ANIM SCIHome page
S. L. Lake, T. R. Weston, E. J. Scholljegerdes, C. M. Murrieta, B. M. Alexander, D. C. Rule, G. E. Moss, and B. W. Hess
Effects of postpartum dietary fat and body condition score at parturition on plasma, adipose tissue, and milk fatty acid composition of lactating beef cows
J Anim Sci, March 1, 2007; 85(3): 717 - 730.
[Abstract] [Full Text] [PDF]

Home page
 J. Nutr.Home page
B. C. Veltri, R. C. Backus, Q. R. Rogers, and E. J. DePeters
Adipose Fatty Acid Composition and Rate of Incorporation of {alpha}-Linolenic Acid Differ between Normal and Lipoprotein Lipase-Deficient Cats
J. Nutr., December 1, 2006; 136(12): 2980 - 2986.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
S. M. Carroll, E. J. DePeters, and M. Rosenberg
Efficacy of a Novel Whey Protein Gel Complex to Increase the Unsaturated Fatty Acid Composition of Bovine Milk Fat
J Dairy Sci, February 1, 2006; 89(2): 640 - 650.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
H. C. Zheng, J. X. Liu, J. H. Yao, Q. Yuan, H. W. Ye, J. A. Ye, and Y. M. Wu
Effects of Dietary Sources of Vegetable Oils on Performance of High-Yielding Lactating Cows and Conjugated Linoleic Acids in Milk
J Dairy Sci, June 1, 2005; 88(6): 2037 - 2042.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
K. C. Morimoto, A. L. Van Eenennaam, E. J. DePeters, and J. F. Medrano
Hot Topic: Endogenous Production of n-3 and n-6 Fatty Acids in Mammalian Cells
J Dairy Sci, March 1, 2005; 88(3): 1142 - 1146.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
W. A. Reh, E. A. Maga, N. M. B. Collette, A. Moyer, J. S. Conrad-Brink, S. J. Taylor, E. J. DePeters, S. Oppenheim, J. D. Rowe, R. H. BonDurant, et al.
Hot Topic: Using a Stearoyl-CoA Desaturase Transgene to Alter Milk Fatty Acid Composition
J Dairy Sci, October 1, 2004; 87(10): 3510 - 3514.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
J. J. Loor and J. H. Herbein
Reduced Fatty Acid Synthesis and Desaturation Due to Exogenous trans10, cis12-CLA in Cows Fed Oleic or Linoleic Oil
J Dairy Sci, April 1, 2003; 86(4): 1354 - 1369.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2001 by the American Dairy Science Association ®.