Abstract
A mixed breed pig that was raised at a farm within 20km of the Fukushima Daiichi nuclear power plant on the day of the accident was moved to a clean area 17days after the accident, slaughtered and sampled 41days after arriving at the clean area. The γ-ray spectrum of belly, ham, loin, and heart were measured using a Ge semiconductor detector. Even though the animal had been kept in a clean area for 41days, contamination with radioisotopic caesium was detected in pork. The pig had been kept inside a piggery and had been fed non-contaminated imported feed in both Fukushima and clean area of its all life. Broadcasts reported that feeding rice straw poses a risk of radioactive contamination of beef in Japan, but rice straw might not be the sole source of contamination. For the safety of future generations, it is necessary to monitor not only beef but also other animal products for food safety.
