A dry comminuted ration for stock rats is described which is considered to be well balanced and adequate in all respects. It contains 68.2 carbohydrates, 15.0 fats and 16.8 protein expressed in terms of percentages of the total calories yielded by the ration. Its ash, calcium and phosphorus contents are 3.72, 0.61 and 0.44 percent respectively with a Ca : P ratio of 1.39.
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