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Two trials with 12 Holstein cows in early to mid-lactation were similar in experimental design. In Trial I, four cows were assigned to each of the following treatments: (1) Control (conventional ration); (2) Control + 250 ml safflower oil fed once daily; and (3) Control + 500 ml safflower oil fed once every other day. In Trial 2, four cows were assigned to each of the following treatments for the experimental period:
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Rindsig et al. (1974) studied this question.
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