Limb Development in Prenatally Irradiated Cattle, Sheep and Swine
- 31 October 1964
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Animal Science
- Vol. 23 (4) , 1066-1071
- https://doi.org/10.2527/jas1964.2341066x
Abstract
Limb primordia of cattle, sheep, and swine fetuses were exposed to approximately 200 r of gamma irradiation at 27 to 34, 20 to 25, and 15 to 24 days of prenatal development, respectively. Limb development in swine was not affected at the stages studied, but limbs of cattle and sheep were affected with varying degrees of severity during the intervals of 31 to 34 (cattle) and 22 to 25 (sheep) days of gestation. The apparent critical period for induction of abnormalities of the forelimbs was day 32 for the bovine and day 23 for the ovine. Pelvic limbs of both species probably reach their point of greatest radiosensitivity 12 to 24 hr. later than the thoracic limbs. Copyright © 1964. American Society of Animal Science . Copyright 1964 by American Society of Animal ScienceThis publication has 0 references indexed in Scilit: