Milk fatty acid feeding effects

Gonthier, C., Mustafa, A.F., Ouellet, D.R., Chouinard, P.Y., Berthiaume, R., and Petit, H.V. 2005. Feeding microionized and extruded flaxseed to dairy cows Effects on blood parameters and milk fatty acid composition. J. Dairy Sci. 88, 748-756. 

TABLE 23. Effect of Dietary Fat Source and Level on Milk Fatty Acid Composition in a Feeding Trial ( - Values with Different Superscripts Differ (p <. 05) Values with Different Superscripts Differ (p <. 01)). 

Potkahski A, Szumacher-Strabel M, CieSlak A (2009) Effect of rapeseed and fish oil blend supplementation to dairy cows summer feeding on rumen parameters and milk fatty acid profile. Anim Sci Pap Rep 27 83-93... 

It can be concluded that linseed, Nutex and Valomega showed comparable effects on feed intake, milk production parameters and milk fatty acid composition. 

Hurtaud, C., Peyraud, J.L., 2007. Effects of feeding camelina (seeds or meal) on milk fatty acid composition and butter speadability. J. Dairy Sd. 90, 5134-5145. 

Banks, W., Clapperton, J.L., Ferrie, M.E. 1976. Effect of feeding fat to dairy cows receiving a fat-deficient basal diet. II. Fatty acid composition of the milk fat. J. Dairy Res. 43,219-227. 

In feeding trials with lipid supplements, Astrup et al. (1980) observed that palmitic or myristic acid significantly enhanced spontaneous lipolysis but stearic acid and fatty acids with a chain length shorter than myristic acid had no effect. These workers found that feeding rapeseed oil to underfed cows reduced the susceptibility of their milk to lipolysis, while Chazal and Chilliard (1985) reported that supplementation with non-protected lipids, particularly highly unsaturated oils such as rapeseed, increased the level of FFAs in milk. Protected oil supplements have been found to lead to reduced lipolysis in milk (Astrup et al., 1979) or to have little effect on FFA level (Urquhart et al., 1984). 

Atwal, A.S., Hidiroglou, M., Kramer, J.K.G. and Binns, M.R. (1990). Effects of feeding a-tocopherol and calcium salts of fatty acids on vitamin E and fatty acid composition of cow s milk. Journal of Dairy Science, 73, 2832-2841. 

Mosley, S.A., Mosley, E.E., Hatch, B., Szasz, J.I., Corato, A., Zacharias, N., Howes, D. and McGuire, M.A. (2007). Effect of varying levels of fatty acids from palm oil on feed intake and milk production in Holstein cows. Journal of Dairy Science, 90,987-993. 

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