| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
1 Dairy Science Department, South Dakota State University, Brookings 57007-0647
Nine multiparous Holstein cows were used in a replicated 3 x 3 Latin square to evaluate the response to diets containing equal amounts of supplemental fat from extruded soybeans or sunflower seeds. Both fat sources contained about 66% polyunsaturated fatty acids; for soybeans, about 8% was linolenic acid, but sunflower seeds contained mostly linoleic acid. Periods were 5 wk, and data were collected the last 3 wk of each period. Total mixed diets were (DM basis) 25% corn silage, 25% alfalfa hay, and 50% concentrate mix. Control concentrate mix contained primarily corn, barley, and soybean meal; extruded soybeans or rolled sunflower seeds replaced portions of the corn, barley, and soybean meal in isonitrogenous (17% CP) diets. Milk yield was higher for cows fed supplemental fat. Percentages of milk fat and protein and DMI were similar for all three dietary treatments. Milk fat from cows fed soybeans or sunflower seeds contained higher concentrations of unsaturated fatty acids and long-chain fatty acids than did milk fat from cows fed the control diet. Milk yield and composition were similar for cows fed soybeans or sunflower seeds. Soybeans or sunflower seeds can be used as dietary fat supplements to increase milk yield and the proportion of unsaturated fatty acids in milk fat.
Key Words: unsaturated fat • fat • lactating cows
Submitted on December 15, 1994
Accepted on February 27, 1996
This article has been cited by other articles:
|
|
 |
|
  M. Bharathan, D. J. Schingoethe, A. R. Hippen, K. F. Kalscheur, M. L. Gibson, and K. Karges Conjugated Linoleic Acid Increases in Milk from Cows Fed Condensed Corn Distillers Solubles and Fish Oil J Dairy Sci, July 1, 2008; 91(7): 2796 - 2807. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L. A. Whitlock, D. J. Schingoethe, A. A. AbuGhazaleh, A. R. Hippen, and K. F. Kalscheur Milk production and composition from cows fed small amounts of fish oil with extruded soybeans. J Dairy Sci, October 1, 2006; 89(10): 3972 - 3980. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
C. Gonthier, A. F. Mustafa, D. R. Ouellet, P. Y. Chouinard, R. Berthiaume, and H. V. Petit Feeding Micronized and Extruded Flaxseed to Dairy Cows: Effects on Blood Parameters and Milk Fatty Acid Composition J Dairy Sci, February 1, 2005; 88(2): 748 - 756. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
C. Gonthier, A. F. Mustafa, R. Berthiaume, H. V. Petit, R. Martineau, and D. R. Ouellet Effects of Feeding Micronized and Extruded Flaxseed on Ruminal Fermentation and Nutrient Utilization by Dairy Cows J Dairy Sci, June 1, 2004; 87(6): 1854 - 1863. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
H. V. Petit Digestion, Milk Production, Milk Composition, and Blood Composition of Dairy Cows Fed Formaldehyde Treated Flaxseed or Sunflower Seed J Dairy Sci, August 1, 2003; 86(8): 2637 - 2646. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. K. Drackley, T. M. Cicela, and D. W. LaCount Responses of Primiparous and Multiparous Holstein Cows to Additional Energy from Fat or Concentrate During Summer J Dairy Sci, April 1, 2003; 86(4): 1306 - 1314. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 S. T. Franklin, K. R. Martin, R. J. Baer, D. J. Schingoethe, and A. R. Hippen Dietary Marine Algae (Schizochytrium sp.) Increases Concentrations of Conjugated Linoleic, Docosahexaenoic and Transvaccenic Acids in Milk of Dairy Cows J. Nutr., November 1, 1999; 129(11): 2048 - 2054. [Abstract] [Full Text]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
