THE GROWTH, BREEDING, LONGEVITY AND HISTOPATHOLOGY OF RATS FED IRRADIATED OR CONTROL FOODS
Abstract
Rations containing 35% control or irradiated (37,200 and 74,400 rad) flour have been fed to four generations of rats. Statistical analysis of the data revealed no treatment effects with respect to growth, breeding or longevity. A study of the hematology data also indicated no treatment differences. It was of interest to note that at 98 days the mean weights of animals of the three generations were significantly different. The data from the long-term carrot feeding experiment reported 15 March 1960 has been statistically analyzed and the following effects observed: (1) Fertility. With animals raised on irradiated carrot rations a higher proportion of breedings resulted in litters compared to those fed the unirradiated carrot ration. (2) Ninety-eight and 42 day weights. Animals raised on the unirradiated carrot ration were larger than those on the irradiated carrot rations. In addition, the mean weight of the first generation animals was considerably higher than those of succeeding generations. (3) Gross food intakes and food efficiencies at 42 days. Both the irradiated carrot rations were less efficient than the control carrot ration, the 2.79 megarad ration being the least efficient. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 15, 1961
- Accession Number
- AD0262811
Entities
People
- Ian J. Tinsley
- Joseph S. Butts
Organizations
- Oregon State University