Two steers were fed leaves of plants of the family Zamiaceae, one Bowenia serrulata and the other, Macrozamia lucida.
Degenerative lesions were demonstrated in the nerve fibres of the fasciculus gracilis and the dorsal spinocerebellar pathways.
Two naturally affected animals from an area where m. lucida was grazed were also examined, and in these, degenerative lesions of the fasciculus gracilis were found.
References
1.
ClareN. T.CunninghamI. J.PerrinD. D.:
The determination of copper in pastures and livers.New Zeald. J. Sci. Tech.26:
340–350(1945)
2.
ClarkE. D.CollipJ. B.:
A study of the Tisdall method for determination of blood serum calcium with a suggested modification.J. biol. Chem.63:
461–464(1925)
GibsonJ. R.:
Manual of Neuropathological Technique.
(Montreal Neurological Institute,
Montreal, Canada1961)
5.
GleesP.:
The Marchi reaction: Its use on frozen sections and its time limit.Brain66:
229–232(1943)
6.
GornallA. G.BardawillC. J.DavidM. M.:
Determination of serum proteins by means of the biuret reaction.J. biol. Chem.177:
751–766(1949)
7.
GuilleryR. W.ShirraB.WebsterK. E.:
Differential impregnation of degenerating nerve fibres in paraffin-embedded material.Stain Tech.36:
9–13(1961)
8.
HallW. T. K.:
Toxicity of the leaves of Macrozamia spp. for cattle.Queensland J. agric. Sci.14:
41–52(1957)
9.
HallW. T. K.:
Plant toxicoses of tropical Australia.Austr. vet. J.40:
176–182(1964)
10.
HolzapfelC. R.:
Studies in mineral metabolism XXVII. Modifications of the methods used at Onderstepoort for the determination of (A) magnesium and calcium; (B) potassium, in grass-extracts.Onderstepoort J. vet. Sci.2:
115–122(1934)
11.
JohsonL. A. S.:
The families of cycads and the zamiaceae of Australia.Linn. Soc. N. S. W. Proc.84:
64–117(1959)
12.
KurlandL. T.:
Proceedings of the Third Conference on the Toxicity of Cycads.Fed. Proc.23:
1337–1339(1964)
LoosemoreR. M.AllcroftR.:
Technique and use of liver biopsy in cattle.Vet. Rec.63:
414–416(1951)
15.
McGavinM. D.RanbyP. B.TammemagiL.:
Demyelination associated with low liver copper levels in pigs.Austr. vet. J.38:
8–14(1962)
16.
O'HaganJ. E.HamiltonT.Le BretonE. G.ShawA. E.:
Human serum bilirubin.Clin. Chem.3:
609–623(1957)
17.
RietmanS.GrankelS.:
A colormetric method for determination of serum glutamic oxaloacetic and glutamic pyruvic transaminases.Amer. J. clin. Path.28:
56–63(1957)
18.
SmithM. C.:
The recognition and prevention of artefacts of the Marchi method.J. Neurol. Neurosurg. Psychiat.19:
74–83(1956)
19.
SmithM. C.StrickS. J.SharpP.:
The value of the Marchi method for staining tissues stored in formalin for prolonged periods.Ibid.19:
62–64(1956)
20.
U. S. Armed Forces Institute of Pathology:
Manual of Histologic and Special Staining Technics,
2nd Ed.
(McGraw-Hill,
New York1960)
21.
WhitingM. G.:
Proceedings of the Third Conference on the Toxicity of Cycads.Fed. Proc.23:
1343–2345(1964)
22.
HallW. T.McGavinM. D.:
The Clinical and Neuropathological Changes in Two Steers Fed Leaves of Macrozamia lucida and Bowenia serrulata of the Family Zamiaceae in:
Proceedings of the Fourth Conference on the Toxicity of Cycads, Appendix C,
p. 165,
ed. Whiting, M. G., (National Institute of Health, Bethesda, Md.
1965)
