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On the Occurrence and Significance of Radiocesium in Bull Semen
Acta Veterinaria Scandinavica volume 8, pages 98–110 (1967)
Abstract
A study has been carried out to investigate the distribution and concentration of radiocesium in bull semen after oral administration. Two bulls were given 2.5 mGi Gs134 in water solution with a stomach tube. Semen was collected with an artificial vagina and the concentration of Cs134 in seminal plasma and spermatozoa measured. The concentration of Gs134 in blood plasma and blood cells was also determined at various time intervals after the administration.
From one week up to the end of the experimental period (88 and 107 days respectively) the ratio between the concentration of Gs134 in spermatozoa and seminal plasma was fairly constant. The concentration in the spermatozoa was only about 35 % of that in seminal plasma. This is remarkable since the intracellular concentration of cesium usually is higher than the extracellular. The concentration of Cs134 in the blood cells of the two bulls was also considerably higher than that in the blood plasma.
The concentration of Gs134 in semen from a bull could be described by a four-term exponential expression. In consequence it could be calculated that the concentration after an infinite daily intake will be 2.6 × 10−3 % of the daily dose per ml semen.
If the deposition of fallout on the pasture where a bull is grazing is 3.4×1015 fissions/m2 (corresponding to a dose rate of about 100 r/hr. at 1 hr. after fission), the dose to spermatozoa in testis and epididymis from Gs137 will be about 60 mrad assuming a maximum residence time of 70 days of the spermatozoa in testis and epididymis. The dose to the spermatozoa which have been diluted ten times (10 to 20 is a common dilution rate) and then stored in a semen bank for one year, will be about 20 mrad. In all the total dose will thus not exceed 0.1 rad. It seems unlikely that the radiation dose to sperm from Cs137 deposited in the body and in the semen will be of any significance in comparison with. e.g. the external dose received from fallout.
References
Ballon, J. E. & R. C. Thompson: Metabolism of cesium-137 in the rat: Comparison of acute and chronic administration experiments. Health Phys. 1958, 1, 85–89.
Bane, A.: A study on the technique of hemocytometric determination of sperm motility and sperm concentration in bull semen. Cornell Vet. 1952, 42, 518–531.
Crabo, B.: Concentration of sodium, potassium and chloride in epididymal plasma and sperm of bulls. Proc. Vth Int. Congr. Animal Reprod., Trento 1964, 4, 566–571.
Ekman, L.: Distribution and excretion of radio-cesium in goats, pigs and hens. Acta vet. scand. 1961, 2, Suppl. 4, 83 pp.
Garner, R. J.: An assessment of the quantities of fission products likely to be found in milk in the event of aerial contamination of agricultural land. Nature (Lond.) 1960, 186, 1063–1064.
Hood, S. L. & L. C. Comar: Metabolism of cesium-137 in rats and farm animals. Arch. Biochem. 1953, 45, 423–433.
Lagerlöf, N.: Morphologische Untersuchungen über Veränderungen im Spermabild und in den Hoden bei Bullen mit verminderten oder aufgehobener Fertilität. Thesis, Stockholm 1934.
Nelson, A., S. Ullberg, H. Kristoffersen & C. Rönnbäck: Distribution of radiocesium in mice. Acta radiol. (Stockh.) 1961, 55, 374–384.
Rockwell, T.: III. Reactor Shielding Design Manual, van Nostrand, New York 1956.
Wasserman, R. H., F. W. Lengemaiin, J. C. Thompson Jr. & C. L. Cornar: The transfer of fall-out radionuclides from diet to man. In, Radioactive Fallout, Soils, Plants, Foods, Man, ed. E. B. Fowler, Elsvier 1965, 204–244.
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Ekman, L., Greitz, U., Gustafsson, B. et al. On the Occurrence and Significance of Radiocesium in Bull Semen. Acta Vet Scand 8, 98–110 (1967). https://doi.org/10.1186/BF03547836
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DOI: https://doi.org/10.1186/BF03547836