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Publikováno v:
Australian Journal of Experimental Biology and Medical Science. 57:31-37
Topsoil, herbage and faeces collected during an outbreak of ryegrass staggers in sheep were examined for tremorgenic penicillia. No such fungi were recovered from the plant material, but they were found among the predominant fungi in the soil and fae
Autor:
Vogel P, Berry Ph, John A. Edgar, J L Frahn, AL Payne, P.A. Cockrum, N. Anderton, M V Jago, GW Lanigan, D.S. Petterson, C. C. J. Culvenor
Publikováno v:
The Australian journal of experimental biology and medical science. 59(4)
A group of highly toxic compounds was isolated from galled seedheads of annual ryegrass (Lolium rigidum Gaud.) containing Corynebacterium rathayi. Purified extracts were resolved by reverse-phase high-performance liquid chromatography into eight main
Publikováno v:
The Australian journal of experimental biology and medical science. 60(3)
Phomopsin, the mycotoxin produced by Phomopsis leptostromiformis, was found to have a very high toxicity for sheep. When administered as a single, subcutaneous injection over the dose range 1 X 25 to 98 microgram/kg body weight, all sheep given 37 X
Publikováno v:
The Rangeland Journal. 3:133
The study was designed to evaluate the effects of phosphorus and non protein nitrogen supplementation on weaner cattle grazing natural pastures on the Fitzroy Pastoral Research Station, north Western Australia. The study was repeated over the period
Autor:
C. C. J. Culvenor, D. G. Campbell, AL Payne, M. V. Jago, J. L. Frahn, LW Smith, JE Peterson, J. A. Edgar
Publikováno v:
Australian Journal of Agricultural Research. 35:293
Groups of 10 Merino wethers were pen-fed pelleted diets containing 80 or 20% Echium plantagineum, for four periods of 12 weeks alternating with four similar periods on control diet. Mild liver damage, characteristic of pyrrolizidine alkaloid poisonin
Autor:
A B Beck, P. A. Cockrum, J. E. Peterson, L W Smith, J. A. Edgar, GW Lanigan, M. Clarke, M V Jago, C. C. J. Culvenor, AL Payne, R R White, D.S. Petterson, J L Frahn
Publikováno v:
Australian Journal of Biological Sciences. 30:269
Two metabolites of P. leptostromijormis (phomopsins A and B) have been isolated as a crystalline mixture from a culture of the fungus on lupin seed. The mixture has been shown to be capable of inducing lupinosis in sheep and in young rats. Key steps
Autor:
AL Payne, PA Cockrum
Publikováno v:
Australian Journal of Agricultural Research. 39:63
Corynetoxin complex is the family of tunicamycin-like antibiotics isolated from annual ryegrass (Lolium rigidum) seedheads infected with a plant pathogenic Corynebacterium and identified as the causative toxins for annual ryegrass toxicity (ARGT) in
Publikováno v:
Australian Journal of Agricultural Research. 29:1281
Most sheep fed for prolonged periods on a ration containing 50% dried Heliotropium europaeum developed some of the clinical manifestations seen in field cases of pyrrolizidine alkaloidosis. Histologically demonstrated liver damage in the laboratory a
Publikováno v:
Australian Journal of Agricultural Research. 30:201
Experiments confirmed that galls induced by nematodes (Anguina sp.), which develop in the place of seeds on ryegrass plants, become toxic to animals when colonized by Corynebacterium rathayi. The distribution of the toxin within the galls was determi