TY - JOUR AU - Zweig, G. AU - Smith, L. M. AU - Peoples, S. A. TI - Feeding trials with dairy cows show DDT detectable in milk is proportional to DDT in daily feed JF - California Agriculture JO - Calif Agr Y1 - 1961/03/01 VL - 15 IS - 3 SP - 13 EP - 13 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v015n03p13 AB - A feeding experiment with dairy cows was conducted in an attempt to define a level of DDT in feeds that would be un-detectable in the milk. For six weeks pairs of animals—including producers of both high- and low-fat milks—were fed daily rations containing 0-5 ppm—parts per million—of DDT, based on their feed intake.