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A study is made of the response of gilts and castrate male pigs to diets containing different levels of lysine and methionine supplements at growth stages 40–110 lb and 110–260 lb liveweight. Results are given for rate of growth, food conversion efficiency and body composition on the various diets. In the discussion of sex differences. it is suagested that different recommendations should be made for the diets of hogs, gilts and castrate males.
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D. W. Robinson (1966) studied this question.
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