Fatty acid profile and physical properties of milk fat from cows fed calcium salts of fatty acids with varying unsaturation

Journal of Dairy Science
P Y ChouinardG J Brisson

Abstract

Holstein cows (n = 24) averaging 42 d in milk were used in a randomized complete block design during a 4-wk trial. A control total mixed ration (TMR) was compared with TMR supplemented with Ca salts of fatty acids from canola oil, soybean oil, or linseed oil. The three vegetable oils were progressively more unsaturated; the dominant fatty acids were, respectively, cis-delta-9-C18:1, C18:2, and C18:3. Apparent total tract digestibility of dry matter, crude protein, ether extract, and neutral detergent fiber was higher for rations containing Ca salts than for the control ration. Milk yield increased linearly as the unsaturation of the dominant fatty acid in the Ca salts increased. Milk fat percentage was reduced when Ca salts were added to the rations. The addition of Ca salts to the ration decreased the proportions of saturated fatty acids that contained C6 to C16 and increased the proportions of C18:0, cis-delta-C18:1, and trans-delta-11-C18:1 in milk fat. Proportions of C18:2 and C18:3 increased linearly, and cis-delta-9-C18:1 decreased linearly, as the unsaturation of the dominant fatty acid in the Ca salts increased. The proportion of fat that was liquid at 5 degrees C was higher for butter from cows fed diets containing Ca ...Continue Reading

References

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Citations

Dec 22, 1999·The Proceedings of the Nutrition Society·D Demeyer, M Doreau
Sep 27, 2005·Critical Reviews in Food Science and Nutrition·Tilak R DhimanAmy L Ure
Apr 5, 2001·Journal of Dairy Science·P Y ChouinardD E Bauman
Jan 29, 2010·Journal of Dairy Science·K SmetK Dewettinck
Oct 24, 2007·Journal of Dairy Science·G Ortiz-GonzalezJ K Drackley
Nov 29, 2008·Journal of Dairy Science·F GlasserY Chilliard
Jul 3, 2019·Animals : an Open Access Journal From MDPI·Atique A BehanAnjas Asmara Samsudin
Mar 27, 2002·Journal of Dairy Science·Robert G Jensen
Aug 8, 2015·Journal of Animal Physiology and Animal Nutrition·J A WeinsteinE J DePeters
Mar 31, 2011·Tropical Animal Health and Production·Belal S ObeidatHadil S Subih

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