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The Influence of Farming and Feeding Practices on Cs137 and Sr90 Concentration in Fodder, Milk and Excreta

Abstract

In a district on the west coast of Norway where the annual precipitation is about 3000 mm, the content of Gs137 in cows milk, fodder and excreta from 14 different farms have been measured during the period 1963—1966. The farms have been classified according to farming and feeding practices. There is strong correlation between extensive farming and high concentration of radionuclides. The average content of Cs137 in milk samples from the most extensively worked farms is about 3.5 nGi/1, while the corresponding value for the relatively well-worked farms is 0.4 nCi/1. Similar variations are found for Sr90. The seasonal variation in the radionuclide content is large, the highest values being found during the grazing period.

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Acknowledgments

The authors are greatly indebted to their predecessors, H. Ulvesæter, G. Schaller, K. Andersen, T. Finstad, T. Mikkelsen, I. Øverby, A. Råstad and S. Thomassen for sampling and measuring, to T. Lekvold in the radioactivity measuring laboratory for willing assistance, to superintendent T. Hvinden and research engineer A. Lillegraven whose guidance has been of great importance and, finally, to The Norwegian Army Veterinary Corps under its commander Lt.col. P. Gjestvang which has made this investigation possible.

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Underdal, B., Ødegaard, Ø.A. & Øverland, N.O. The Influence of Farming and Feeding Practices on Cs137 and Sr90 Concentration in Fodder, Milk and Excreta. Acta Vet Scand 8, 89–97 (1967). https://doi.org/10.1186/BF03547835

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  • DOI: https://doi.org/10.1186/BF03547835