Access the full text.
Sign up today, get DeepDyve free for 14 days.
A. Roy, A. Ferlay, K. Shingfield, Y. Chilliard (2006)
EXAMINATION OF THE PERSISTENCY OF MILK FATTY ACID COMPOSITION RESPONSES TO PLANT OILS IN COWS GIVEN DIFFERENT BASAL DIETS, WITH PARTICULAR EMPHASIS ON TRANS-C18:1 FATTY ACIDS AND ISOMERS OF CONJUGATED LINOLEIC ACIDAnimal Science, 82
(2000)
Animal and vegetable fats and oilspreparation of methyl ester of fatty acids, Clause 5: trans-esterification method
R. Jensen (2002)
The composition of bovine milk lipids: January 1995 to December 2000.Journal of dairy science, 85 2
(2010)
International Organisation for Standardization (ISO) (1990) Animal and vegetable fats and oils-analysis by gas chromatography of methyl esters of fatty acids
H. Smit, H. Taweel, B. Tas, S. Tamminga, A. Elgersma (2005)
Comparison of techniques for estimating herbage intake of grazing dairy cows.Journal of dairy science, 88 5
N. Thiex, S. Anderson, B. Gildemeister (2003)
Crude fat, diethyl ether extraction, in feed, cereal grain, and forage (Randall/Soxtec/submersion method): collaborative study.Journal of AOAC International, 86 5
S. Terra, V. Marino, M. Manenti, G. Licitra, S. Carpino (2010)
Increasing pasture intakes enhances polyunsaturated fatty acids and lipophilic antioxidants in plasma and milk of dairy cows fed total mix rationDairy Science & Technology, 90
Analytical Chemists (AOAC) (1990) Official methods of analysis
D. Givens (2010)
Milk and meat in our diet: good or bad for health?Animal : an international journal of animal bioscience, 4 12
D. Palmquist, A. Beaulieu, D. Barbano (1993)
Feed and animal factors influencing milk fat composition.Journal of dairy science, 76 6
R. Jensen (1973)
Composition of bovine milk lipidsJournal of the American Oil Chemists Society, 50
(1982)
Commissione Valutazione Alimenti
Association of Official Analytical Chemists (AOAC) (1990) Official methods of analysis
M. Kelly, E. Kolver, Dale Bauman, M. Amburgh, L. Muller (1998)
Effect of intake of pasture on concentrations of conjugated linoleic acid in milk of lactating cows.Journal of dairy science, 81 6
M. Coppa, M. Coppa, I. Verdier-Metz, A. Ferlay, P. Pradel, R. Didienne, A. Farruggia, M. Montel, B. Martin (2011)
Effect of different grazing systems on upland pastures compared with hay diet on cheese sensory properties evaluated at different ripening timesInternational Dairy Journal, 21
N. Thiex, S. Anderson, B. Gildemeister (2003)
Crude fat, hexanes extraction, in feed, cereal grain, and forage (Randall/Soxtec/submersion method): collaborative study.Journal of AOAC International, 86 5
R. Frost (2004)
International Organization for Standardization (ISO)Quality Assurance Journal, 8
(2006)
Lipids in herbage
L. Biondi, M. Valvo, M. Gloria, E. Tenghi, V. Galofaro, A. Priolo (2008)
Changes in ewe milk fatty acids following turning out to pastureSmall Ruminant Research, 75
A. Elgersma, G. Ellen, H. Horst, H. Boer, P. Dekker, S. Tamminga (2004)
Quick changes in milk fat composition from cows after transition from fresh grass to a silage dietAnimal Feed Science and Technology, 117
R. Mansbridge, J. Blake (1997)
Nutritional factors affecting the fatty acid composition of bovine milkBritish Journal of Nutrition, 78
(2005)
Scheeder MRL (2005) A study on the causes for the elevated
(2010)
n-3 fatty acids in cows’ milk of Alpine origin. Lipids
Y. Chilliard, F. Glasser, A. Ferlay, L. Bernard, J. Rouel, M. Doreau (2007)
Diet, rumen biohydrogenation and nutritional quality of cow and goat milk fatEuropean Journal of Lipid Science and Technology, 109
A. Elgersma, J. Dijkstra, S. Tamminga (2006)
FRESH HERBAGE FOR DAIRY CATTLE
F. Leiber, M. Kreuzer, D. Nigg, H. Wettstein, Martin Scheeder (2005)
A study on the causes for the elevated n−3 fatty acids in cows' milk of alpine originLipids, 40
All models were significant at P < 0.001. Equation coefficients differing at P < 0.05 between rapid and progressive transition models are in bold
(1969)
Analyse phytologique des prairies—applications agronomiques
K. Shingfield, C. Reynolds, G. Hervás, J. Griinari, A. Grandison, D. Beever (2006)
Examination of the persistency of milk fatty acid composition responses to fish oil and sunflower oil in the diet of dairy cows.Journal of dairy science, 89 2
M. Coppa, A. Ferlay, F. Monsallier, I. Verdier-Metz, P. Pradel, R. Didienne, A. Farruggia, M. Montel, B. Martin (2011)
Milk fatty acid composition and cheese texture and appearance from cows fed hay or different grazing systems on upland pastures.Journal of dairy science, 94 3
A. Lettat, P. Nozière, M. Silberberg, D. Morgavi, C. Berger, C. Martin (2010)
Experimental feed induction of ruminal lactic, propionic, or butyric acidosis in sheep.Journal of animal science, 88 9
R. Khanal, T. Dhiman, R. Boman (2008)
Changes in fatty acid composition of milk from lactating dairy cows during transition to and from pastureLivestock Science, 114
T. Ulbricht, D. Southgate (1991)
Coronary heart disease: seven dietary factorsThe Lancet, 338
As fatty acids (FA) may become included among the quality parameters setting milk prices, their variation during diet changes needs to be investigated. The aim of this work was to study the kinetics of milk FA during rapid or progressive transition from hay- to pasture-based diets. Two farms in the southwestern Alps were selected. The milk of five Valdostana Red Pie cows from each farm was analysed on days 0, 1, 2, 3, 5 and 7 (at day 1, pasture was introduced into the diet), and thereafter twice a week. Changes in the milk FA became significant after days 3 or 5. The FA from C4:0 to C18:0, C18:2n-6, C18:3n-3 and C20:0 became stable after day 5 for both transition types. The cis9-C18:1, trans10 + trans11-C18:1 and cis9trans11-conjugated linoleic acid (CLA) became stable 3, 16 and 16 days after the maximum pasture intake, respectively. The C4:0 peaked at 3 days after pasture introduction or increase in the diet, probably reflecting high butyrate production in the rumen due to the high carbohydrate concentration in fresh herbage. The kinetics of all FAs fitted a log-normal cumulate distribution (except for C4:0), but model coefficients did not differ between the rapid and the progressive transition. After diet transition, only cis9-C18, cis9trans11-CLA, C18:3n-3, the mono-unsaturated and poly-unsaturated FA, and the sum of CLA isomers increased faster in the rapid transition than in the progressive transition diet (higher a coefficients), because of the higher initial pasture intake. Knowledge of the kinetics of milk FA when pasture is introduced into the diet could help farmers to improve milk nutritional quality.
Dairy Science & Technology – Springer Journals
Published: Apr 27, 2012
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.