Search Results - "Bourke, C A"

Motor neurone disease in molybdenum-deficient sheep fed the endogenous purine xanthosine: possible mechanism for Tribulus staggers by Bourke, CA

“…Background  The occurrence of Tribulus terrestris motor neurone disease (MND) in sheep is linked with grazing Tribulus growing on cultivation paddocks. A…”
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Fescue-associated oedema of horses grazing on endophyte-inoculated tall fescue grass (Festuca arundinacea) pastures by Bourke, C.A, Hunt, E, Watson, R

“…A new form of toxicity called equine fescue oedema is described. The clinical signs included inappetence, depression, and subcutaneous oedema of the head,…”
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A review of kikuyu grass (Pennisetum clandestinum) poisoning in cattle by Bourke, CA

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Molybdenum deprivation, purine ingestion and an astrocyte‐associated motor neurone syndrome in sheep: assumed clinical effects of inosine by Bourke, CA

“…BACKGROUND: An astrocyte‐associated motor neurone syndrome was produced in molybdenum‐deprived sheep fed xanthosine. Mo‐deprived sheep fed inosine, adenosine…”
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Evidence that enforced sunlight exposure can cause hyperthermia in cattle ingesting low levels of ergot of rye (Claviceps purpurea), when air temperature and humidity conditions are only moderate by BOURKE, CA

“…Objective To determine the rectal temperature response of cattle, following the oral administration of ergot of rye (Claviceps purpurea), under pen conditions…”
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Abnormal turning behaviour, GABAergic inhibition and the degeneration of astrocytes in ovine Tribulus terrestris motor neuron disease by Bourke, C.A

“…Objective To observe the clinical signs of sheep affected by Tribulus terrestris motor neuron disease, to ascertain their response to striatal dopamine…”
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Cerebellar ataxia in sheep grazing pastures infested with Romulea rosea (onion grass or Guildford grass) by Bourke, C.A, Bunker, E.C, Reece, R.L, Whittaker, S.J

“…There have been anecdotal reports since 1962 of ‘staggers’ in sheep grazing Romulea rosea infested pastures, but this is the first detailed account. In…”
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The effect of shade, shearing and wool type in the protection of Merino sheep from Hypericum perforatum (St John's wort) poisoning by BOURKE, CA

“…Objective To investigate the roles of shade, fleece length and wool type in the protection of sheep from Hypericum perforatum poisoning. Animals Adult Merino…”
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Evidence that N-methyltyramine does not cause Phalaris aquatica-related sudden death in ruminants by Bourke, C, Colegate, S, Culvenor, R

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Sunlight associated hyperthermia as a consistent and rapidly developing clinical sign in sheep intoxicated by St John's wort (Hypericum perforatum) by BOURKE, CA

“…Objective To assess the usefulness of rectal temperature responses in Australian bred Merino sheep, following the oral administration of Hypericum perforatum…”
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Photosensitisation in dairy cattle grazing alligator weed (Alternanthera philoxeroides) infested pastures by BOURKE, CA, RAYWARD, D

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Reassessment of the toxicity of Hypericum perforatum (St John's wort) for cattle by Bourke, C.A, White, J.G

“…Objective To investigate the clinical effect of administering sufficient Hypericum perforatum to cattle to deliver quadruple the reported oral toxic dose…”
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Clinical observations and differentiation of the peracute Phalaris aquatica poisoning syndrome in sheep known as 'polioencephalomalacia-like sudden death' by Bourke, C A, Rendell, D, Colegate, S M

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Peracute ammonia toxicity: a consideration in the pathogenesis of Phalaris aquatica 'Polioencephalomalacia-like sudden death' poisoning of sheep and cattle by Bourke, C.A, Colegate, S.M, Rendell, D, Bunker, E.C, Kuhn, R.P

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Seasonal variation in hypericin content of Hypericum perforatum L. (St. John’s Wort) by Southwell, Ian A, Bourke, Christopher A

“…Hypericin and pseudohypericin, bioactive constituents in St. John’s Wort ( Hypericum perforatum), have been determined in the soft tops of the plant that are…”
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Efficacy of the prophylactic use of thiamine and pyridoxine in sheep during an outbreak of Phalaris aquatica 'polioencephalomalacia-like sudden death' poisoning by Bourke, C A, Rendell, D, Colegate, S M

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Suspected blue canary grass (Phalaris coerulescens) poisoning of horses by COLEGATE, SM, ANDERTON, N, EDGAR, J, BOURKE, CA, ORAM, RN

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Suspected Phalaris paradoxa (paradoxa grass) poisoning in horses by BOURKE, CA, COLEGATE, SM, SLATTERY, S., ORAM, RN

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Are ovine fenugreek (Trigonella foenum-graecum) staggers and kangaroo gait of lactating ewes two clinically and pathologically similar nervous disorders by Bourke, C.A

“…Fenugreek staggers has occurred in sheep in Victoria, as both an acute and a chronic syndrome. Signs included quadraparesis, a high stepping fore limb gait and…”
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Locomotor effects in sheep of alkaloids identified in Australian Tribulus terrestris by Bourke, C A, Stevens, G R, Carrigan, M J

“…Fresh, mature, ungrazed Tribulus terrestris plant material was subjected to a standard alkaloid extraction procedure. The extract was fractionated by thin…”
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