Long-term feeding studies in mice fed a diet containing irradiated fish II. 90-day toxicity study

Three groups of mice (F_2b generation of Part I study) were fed for 90 days, either stock ration or diets containing 45% fish, either non-irradiated or irradiated with 1.75 kGy. Equal amounts of cod and redfish (ocean perch) constituted the fish portion of the diet. Haematological and clinical chemical examinations revealed no treatment-related effects. There were no untoward terminal gross or histopathological changes. An initial lag in weight gain of males fed fish diets was attributed to reduced food consumption, due to the difference in texture of the fish diets compared with the stock ration.