Abstract
Summary
The addition of 4% 1:20 liver concentrate to purified rations increased the rate of growth and aided in the maintenance of a general healthy appearance of rabbits. The improved performance noted when liver extract was added is apparently not attributable to known nutrients including folic acid, biotin, p-aminobenzoic acid and cystine. The results indicate that liver contains an unidentified factor essential for the maximum rate of growth of the rabbit.
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