| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
1 Department of Animal Sciences, University of Illinois, Urbana 61801
Five Holstein cows were utilized in a Latin square design to determine the effects of postruminal profile of fatty acids on DMI, milk yield and composition, nutrient digestibilities, and metabolites in blood. Treatments were abomasal infusions of 1) control, 169 to 180 g/d of meat solubles; 2) control plus 450 g/d of mostly saturated fatty acids; 3) canola fatty acids; 4) soybean fatty acids; or 5) sunflower fatty acids. Infusion of fatty acids decreased intakes of DM, CP, and gross energy; yields of milk, FCM, SNF, total solids, CP, NPN, true protein, whey protein, and casein; and percentages of SNF, CP, NPN, true protein, and casein in milk. Cows infused with mostly saturated fatty acids consumed more CP and digestible energy; yielded more milk, FCM, fat, SNF, total solids, CP, true protein, and casein; and had greater percentages of SNF and total solids in milk than cows infused with unsaturated fatty acids. Milk fatty acids reflected the profile of the infused fatty acid mixture. Ruminal characteristics and apparent digestibilities of DM, NDF, energy, and fatty acids generally were not different among treatments. The profile of fatty acids reaching the small intestine may influence responses when supplemental fats are fed to lactating dairy cows.
Key Words: fatty acids • milk protein • dairy cows • abomasum
Submitted on September 1, 1993
Accepted on November 12, 1993
This article has been cited by other articles:
|
|
 |
|
  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]
|
|
|
|
|
|
A. K. G. Kadegowda, L. S. Piperova, P. Delmonte, and R. A. Erdman Abomasal Infusion of Butterfat Increases Milk Fat in Lactating Dairy Cows J Dairy Sci, June 1, 2008; 91(6): 2370 - 2379. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. K. Drackley, T. R. Overton, G. Ortiz-Gonzalez, A. D. Beaulieu, D. M. Barbano, J. M. Lynch, and E. G. Perkins Responses to Increasing Amounts of High-Oleic Sunflower Fatty Acids Infused into the Abomasum of Lactating Dairy Cows J Dairy Sci, November 1, 2007; 90(11): 5165 - 5175. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
P. J. Moate, W. Chalupa, R. C. Boston, and I. J. Lean Milk Fatty Acids. I. Variation in the Concentration of Individual Fatty Acids in Bovine Milk J Dairy Sci, October 1, 2007; 90(10): 4730 - 4739. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G. N. Douglas, J. Rehage, A. D. Beaulieu, A. O. Bahaa, and J. K. Drackley Prepartum Nutrition Alters Fatty Acid Composition in Plasma, Adipose Tissue, and Liver Lipids of Periparturient Dairy Cows J Dairy Sci, June 1, 2007; 90(6): 2941 - 2959. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
P. J. Moate, R. C. Boston, I. J. Lean, and W. Chalupa Short communication: further validation of the fat sub-model in the cornell-penn-miner dairy model. J Dairy Sci, March 1, 2006; 89(3): 1052 - 1056. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. J. Harvatine and M. S. Allen Effects of Fatty Acid supplements on ruminal and total tract nutrient digestion in lactating dairy cows. J Dairy Sci, March 1, 2006; 89(3): 1092 - 1103. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. J. Harvatine and M. S. Allen Effects of Fatty Acid supplements on feed intake, and feeding and chewing behavior of lactating dairy cows. J Dairy Sci, March 1, 2006; 89(3): 1104 - 1112. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. J. Shingfield, C. K. Reynolds, G. Hervas, J. M. Griinari, A. S. Grandison, and D. E. Beever 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, February 1, 2006; 89(2): 714 - 732. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. J. Harvatine and M. S. Allen The Effect of Production Level on Feed Intake, Milk Yield, and Endocrine Responses to Two Fatty Acid Supplements in Lactating Cows J Dairy Sci, November 1, 2005; 88(11): 4018 - 4027. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
N. B. Litherland, S. Thire, A. D. Beaulieu, C. K. Reynolds, J. A. Benson, and J. K. Drackley Dry Matter Intake is Decreased More by Abomasal Infusion of Unsaturated Free Fatty Acids than by Unsaturated Triglycerides J Dairy Sci, February 1, 2005; 88(2): 632 - 643. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. J. Loor and J. H. Herbein Exogenous Conjugated Linoleic Acid Isomers Reduce Bovine Milk Fat Concentration and Yield by Inhibiting De Novo Fatty Acid Synthesis J. Nutr., December 1, 1998; 128(12): 2411 - 2419. [Abstract] [Full Text]
|
|
|
|
|
|
F. Enjalbert, M.-C. Nicot, C. Bayourthe, and R. Moncoulon Duodenal Infusions of Palmitic, Stearic or Oleic Acids Differently Affect Mammary Gland Metabolism of Fatty Acids in Lactating Dairy Cows J. Nutr., September 1, 1998; 128(9): 1525 - 1532. [Abstract] [Full Text]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
