J. Anim Sci.
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J. Anim Sci. 1965. 24:1131-1135.
© 1965 American Society of Animal Science
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Skeletal Defects in Prenatally Irradiated Sheep, Cattle and Swine1

A. F. Mcfee, R. L. Murphree and R. L. Reynolds2

Agricultural Research Laboratory of the University of Tennessee, Oak Ridge,2

Abstract

Whole-body doses of gamma radiation administered to ewes between days 22 and 25 of gestation produced deformities of the thoracic limbs in a major portion of their lambs. Exposure between days 23 and 27 caused a high incidence of defective pelvic limbs. Similar anomalies of the thoracic limbs were produced by gamma irradiation of cattle on the 32nd day of pregnancy and by neutron exposures of swine on day 21 of gestation. The minimum dose to the dam at which anomalies were produced was 200 r in sheep and 300 r in cattle.

Footnotes

1 This manuscript is published with the permission of the Director of the University of Tennessee Agricultural Experiment Station, Knoxville.

2 The appreciation of the authors is extended to J. R. Eblen and T. H. Thomas for their technical assistance in these experiments.






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Copyright © 1965 by the American Society of Animal Science.