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Effect of buffer feeding on milk fat composition from dairy cows offered a high-lipid ration at pasture

  • E. Magowan (a1), A. M. Fearon (a1) (a2), D.C. Patterson (a3) and J. A. M. Beattie (a2)

Extract

Manipulation of the dairy cow’s diet at pasture using high-lipid concentrate is an effective natural means of enhancing the composition and physical properties of milk fat and has been applied in several countries to improve the spreadability of butter. However, because of dietary energy deficits deriving from high yield potential of cows or grass of retarded or poor quality, dairy cows are frequently offered supplementary feeds or buffers e.g. silage or additional concentrates, while at pasture. The study investigated the effect on milk fat composition when providing dairy cows with buffer feeds while they received a diet of a high-lipid concentrate and grazed grass which aimed to increase the proportion of unsaturated fatty acids.

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References

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AOCS, 1990. Sampling and Analysis of Commercial Oils and Fats. AOCS, Chicago, USA.
Fearon, A. M., Charlton, C. T. and Kilpatrick, D. J. 1994. A further investigation of the influence of dietary protected lipid supplements on the characteristics of cows’ milk fat. Journal of Science, Food and Agriculture 66: 247256.

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