Odendaal, M.W.; Visser, J.J.; Botha, W.J.S.; Prinsloo, H.; Bigalke, R.D.
(Published by the Government Printer, Pretoria., 1988)
Weaned lambs, having a detectable level of maternal antibodies (1-2 units/ml) against C. perfringens type
D, showed protective antitoxin levels lasting for 29 days after receiving a single parenteral dose of 200 ...