scholarly journals Effect of linoleic acid and dietary vitamin E supplementation on sustained conjugated linoleic acid production in milk fat from dairy cows

2012 ◽  
Vol 95 (12) ◽  
pp. 7299-7307 ◽  
Author(s):  
A.M. O’Donnell-Megaro ◽  
J.L. Capper ◽  
W.P. Weiss ◽  
D.E. Bauman
Keyword(s):  
Linoleic Acid ◽  
Vitamin E ◽  
Dairy Cows ◽  
Conjugated Linoleic Acid ◽  
Milk Fat ◽  
Acid Production ◽  
Dietary Vitamin ◽  
Vitamin E Supplementation

scholarly journals Influence of Dietary Fish Oil on Conjugated Linoleic Acid and Other Fatty Acids in Milk Fat from Lactating Dairy Cows

2000 ◽  
Vol 83 (11) ◽  
pp. 2620-2628 ◽  
Author(s):  
D.C. Donovan ◽  
D.J. Schingoethe ◽  
R.J. Baer ◽  
J. Ryali ◽  
A.R. Hippen ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Fish Oil ◽  
Dairy Cows ◽  
Conjugated Linoleic Acid ◽  
Milk Fat ◽  
Lactating Dairy Cows ◽  
Dietary Fish

Lactation response of cows to different levels of ruminally inert conjugated linoleic acids under commercial conditions

2005 ◽  
Vol 85 (2) ◽  
pp. 231-242 ◽  
Author(s):  
Rachel Gervais ◽  
Richard Spratt ◽  
Martin Léonard ◽  
P. Yvan Chouinard
Keyword(s):  
Linoleic Acid ◽  
Dairy Cows ◽  
Conjugated Linoleic Acid ◽  
Milk Production ◽  
Milk Fat ◽  
Metabolic Profile ◽  
Milk Composition ◽  
Dietary Lipids ◽  
Calcium Salts ◽  
Lactating Cows

Dietary conjugated linoleic acid (CLA) supplements have been shown to reduce milk fat synthesis in dairy cows. A rumen-inert source of CLA is required for commercial feed applications. The conversion of dietary lipids to a calcium salt is considered as a method to counter the extensive hydrogenation of dietary lipids that occurs in the rumen. Our objective was to determine whether feeding calcium salts of CLA under commercial conditions would affect milk production, milk composition and blood metabolic profile. A total of 240 dairy cows from eight farms were blocked according to the calving date, and randomly assigned to four treatments providing CLA at 0, 8, 16 and 32 g d-1. Milk production was recorded and milk was sampled on day 0, 7, 14, 28 and 42 of the feeding period. Blood samples were taken on day 42 from early-lactating cows (< 157 d in milk) to determine the metabolic profile. Milk fat yield was decreased 11, 20 and 28%, and milk fat concentration was reduced 13, 22 and 28% (linear; P < 0.001) when cows received 8, 16 and 32 g d-1 of CLA, respectively. Milk yield, milk protein and blood metabolic parameters were not affected by experimental treatments. Calcium salts of CLA can be used as an effective tool to manage milk fat content on commercial dairy farms. Key words: Conjugated linoleic acid, milk fat, ruminally inert fat

scholarly journals Milk fat responses to butterfat infusion during conjugated linoleic acid-induced milk fat depression in lactating dairy cows

2013 ◽  
Vol 96 (4) ◽  
pp. 2387-2399 ◽  
Author(s):  
D. Vyas ◽  
U. Moallem ◽  
B.B. Teter ◽  
A.R.K. Fardin-Kia ◽  
R.A. Erdman
Keyword(s):  
Linoleic Acid ◽  
Dairy Cows ◽  
Conjugated Linoleic Acid ◽  
Milk Fat ◽  
Milk Fat Depression ◽  
Lactating Dairy Cows

The effect of Ala293Val single nucleotide polymorphism in the stearoyl-CoA desaturase gene on conjugated linoleic acid concentration in milk fat of dairy cows

2010 ◽  
Vol 90 (4) ◽  
pp. 575-584 ◽  
Author(s):  
L.A. Clark ◽  
J.M. Thomson ◽  
S.S. Moore ◽  
M. Oba
Keyword(s):  
Single Nucleotide Polymorphism ◽  
Linoleic Acid ◽  
Dairy Cows ◽  
Conjugated Linoleic Acid ◽  
Milk Fat ◽  
Control Diet ◽  
Nucleotide Polymorphism ◽  
Single Nucleotide ◽  
Desaturation Index ◽  
Stearoyl Coa Desaturase

The objectives of this study were to determine the effects of the Ala293Val single nucleotide polymorphism in stearoyl-CoA desaturase (SCD) on the concentration of cis-9, trans-11 conjugated linoleic acid (CLA) in milk fat of dairy cows, and to identify a phenotypic indicator of cows with a greater genetic capability to produce CLA that is not affected by dietary lipid content. In Study 1, 12 cows, four of each Ala293Val SCD genotype, were fed either a control or an oil-supplemented diet in a cross-over design to examine effects of diet, genotype and their interaction. The CLA concentration in milk fat was greater for cows fed the oil-supplemented (4.4%) vs. the control diet (0.6%), but was not affected by the Ala293Val SCD genotype. In Study 2, the Ala293Val SCD genotype of 215 dairy cows at a commercial dairy did not affect milk yield, composition, or CLA concentration in milk fat. However, in both studies, C14:1 desaturation index was greater for the AA genotype compared with the others. The Ala293Val SCD genotype may not affect CLA production although the SCD Ala293 allele is associated with a higher C14:1 desaturation index possibly because effects of the SCD genotype vary depending on fatty acid chain length or origin.

scholarly journals Effect of Dietary Vitamin E on Rumen Biohydrogenation Pathways and Milk Fat Depression in Dairy Cows Fed High-Fat Diets

2006 ◽  
Vol 89 (2) ◽  
pp. 685-692 ◽  
Author(s):  
J. Pottier ◽  
M. Focant ◽  
C. Debier ◽  
G. De Buysser ◽  
C. Goffe ◽  
...  
Keyword(s):  
Vitamin E ◽  
Dairy Cows ◽  
Milk Fat ◽  
Dietary Vitamin ◽  
High Fat ◽  
Milk Fat Depression ◽  
High Fat Diets ◽  
Fat Diets

Effect of abomasal infusions of geometric isomers of 10,12 conjugated linoleic acid on milk fat synthesis in dairy cows

Lipids ◽  
2005 ◽  
Vol 40 (8) ◽  
pp. 823-832 ◽  
Author(s):  
Asgeir Sæbø ◽  
Per-Christian Sæbø ◽  
J. Mikko Griinari ◽  
Kevin J. Shingfield
Keyword(s):  
Linoleic Acid ◽  
Dairy Cows ◽  
Conjugated Linoleic Acid ◽  
Milk Fat ◽  
Geometric Isomers ◽  
Fat Synthesis ◽  
Milk Fat Synthesis

scholarly journals Trans-10, Trans-12 Conjugated Linoleic Acid Does Not Affect Milk Fat Yield but Reduces Δ9-Desaturase Index in Dairy Cows

2006 ◽  
Vol 89 (7) ◽  
pp. 2559-2566 ◽  
Author(s):  
J.W. Perfield ◽  
P. Delmonte ◽  
A.L. Lock ◽  
M.P. Yurawecz ◽  
D.E. Bauman
Keyword(s):  
Linoleic Acid ◽  
Dairy Cows ◽  
Conjugated Linoleic Acid ◽  
Milk Fat ◽  
Δ9 Desaturase ◽  
Fat Yield
Sign in / Sign up

Export Citation Format

Share Document