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Browsing 1939 Onderstepoort Journal of Veterinary Science and Animal Industry, Volume 13, 1939 by Subject "Cattle -- Diseases"
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Fourie, P.J.J.; Du Toit, P.J.
(Pretoria : The Government Printer, 1939)
l. In mating a bull (7015) being a carrier of the porphyrin gene (Dr) to ten unrelated heifers, 8 calves were produced. These are all clinically normal. This is regarded as evidence that the inherited character is not ...