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Feeding For Increased Milk Protein¹

Department of Dairy Science, Michigan State University, East Lansing 48824

ABSTRACT

Recent literature was reviewed to assess the influence of dietary energy, fiber, protein, and fat on the concentration of protein in milk. Percentage of milk protein increased .015 units per megacalorie of increased daily intake of net energy when the increased intake came from grain or roughage. Increasing dietary energy with fat decreased the concentration of protein in milk. Perhaps extra dietary energy is capable of increasing blood glucose to increase the concentration of protein in milk. Milk protein increased .02% for each increase of dietary crude protein of 1%. Experiments from which these regressions were calculated were not designed primarily for studying dietary effects on concentration of milk protein which suggests caution in use of these regressions. Experiments designed for measuring dietary effects on concentration of milk protein are needed.

¹ Published with the approval of the Director of the Agricultural Experiment Station as Journal Article no. 7758.

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