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Bureau of Dairy Industry, Agricultural Research Administration, United States Department of Agriculture, Beltsville, Maryland
Inanition in rats from weaning through pregnancy reduces growth of the mammary gland to a greater extent than might be expected from the reduction in body size which results from reduced feed intake.
When adequate feed was supplied during lactation to rats that had been on the restricted diet, they increased in body size rapidly, the mammary gland also grew rapidly, and their lactation performance was superior to that of rats that were on adequate feed intake throughout the whole of the experimental period.
Manuscript received 30 December 1947.