Fallout Radiation (Part A Effects on Livestock and Food Crops (Part B): Annual Report November 1, 1968 to October 31, 1969 [open pdf - 3MB]
"These reports demonstrate the importance of livestock as a food reserve, cattle alone being valued at over 16 billion dollars, and that the effects on livestock productivity from ingesting fallout material is potentially an important problem. The primary objectives of this investigation were: to determine the effects of beta irradiation to the gastrointestinal tract (GI), beta irradiation to the skin and whole-body gamma irradiation (WB). These effects were measured from single and combinations of these insuits. Parameters investigated included effects on survival, feed intake, weight, blood, gross pathology and histopathology."
United Stated Federal Emergency Management Agency, Learning Resource Center: http://www.lrc.fema.gov/