A STUDY ON THE SPIRAL SHELL IN DIANCHI, YUNNAN, AS DOMESTIC FEED

This article studies the accumulation and the metastasis of natural radioactive nuclei in thecorporal of chicken when spiral shell is used as domestic feed. The result shows that the contents of natural radioactivity nuclei U, Th, and ~(226)Ra vary with the chicken meat, chicken bone, chicken egg and egg capsule. Their accumulation and metastasis are in the orders Th>U>~(226)Ra, but the levels of the three radioactive nuclei are all below the limited levels of radioactive substances in the food standard of the People's Republic of China. This study provides a basis for developing and making use of the spiral shell as domestic feed in Dianchi, Ynnnan.