The effects of irradiation of sheep guts with gamma-ray were investigated comparing with that of chemical processing. The effect of the sterili- zation was as follows: 5.0 Mrad gave perfect result, 1.0 Mrad gave almost perfect result comparable to that of the treatment with sodiumhypochlorite, and 0.5 Mrad was not effective.
The strength of tugging and the spreading rate of guts were reduced when the dose was raised up to 5.0 Mrad. When irradiated with 1.0 Mrad, however, they showed no significant difference with that of sodiumhypochlorite-treated one. As the result, ir- radiation processing with 1.0 Mrad can replace the processing with sodiumhypochlorite employed generally at present. In addition, it was also revealed that the treatment with hypochlorite did not reduce the strength of tugging or the rate of spreading.