Feeding DDT and Alfalfa Sprayed with DDT to Calves

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Abstract
DDT in oil soln. and alfalfa containing various amts. of DDT residue were fed to 15 dairy calves. The feeding period ranged from 160 to 230 days. The DDT intake varied from 0.07 to 2.9 mg./ kg. of body wt. or 2.2 to 106 ppm. of the dry matter consumed. When DDT intake exceeded 10 ppm. of the dry matter intake, DDT appeared in the meat of the calves. The concn. of DDT in the body and kidney fat was proportional to the DDT intake. Growth of the calves was not impaired. Hemoglobin, Vit. A, carotene, Ca, and P concns. in the blood were normal, and no histological changes ascribed to DDT ingestion were found in the livers.