Browsing South African National Veterinary Repository by Author "Naude, T.W."

Browsing South African National Veterinary Repository by Author "Naude, T.W."

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  • Authors' note: Furunculosis in rainbow trout (Salmo gairdneri) raised in sea water 
    Boomker, Jacob Diederik Frederik; Huchzermeyer, Fritz W.; Henton, Marijke M.; Naude, T.W.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1997)
  • Biography of Douw Gerbrand Steyn 
    Naude, T.W.; South African Veterinary Association. History Committee (2010-11-16)
    Biography of the veterinarian and toxicologist Douw Gerbrand Steyn. The biography includes information about his education and career, scientific contributions and writings, homages and distinctions (1899-1988).
  • Biography of Marthinus Christoffel Lambrechts 
    Naude, T.W.; South African Veterinary Association. History Committee (2010-11-01)
    Biography of the veterinarian Marthinus Christoffel Lambrechts. The biography includes information about his education and career, scientific contributions and writings, homages and distinctions.
  • The distribution, diagnoses and estimated economic impact of plant poisonings and mycotoxicoses in South Africa 
    Kellerman, T. Stephanus; Naude, T.W.; Fourie, Niel; Verwoerd, Daniel Wynand (Pretoria : Agricultural Research Council, Onderstepoort Veterinary Institute, 1996)
    Maps are provided showing the national and provincial distributions of many plant poisonings and mycotoxicoses in South Africa. The various poisonings are briefly described and criteria for their diagnoses are given. The ...
  • Evaluation of the efficacy of d-penicillamine and trientine as copper chelators using an in vitro technique involving ovine red blood cells 
    Guthrie, Alan John; Botha, C.J. (Christoffel Jacobus); Naude, T.W.; Swan, Gerry E.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute., 1992)
    An in vitro technique for haemolysing ovine red blood cells with copper sulphate was standardized to induce c 50% haemolysis with 0,5 mM CuSO₄ after incubation for 14 h at 38°C. This technique was then applied to test the ...
  • Experimental diamidine poisoning due to commonly used babecides 
    Naude, T.W.; Basson, P.A.; Pienaar, J.G.; South Africa. Dept. of Agricultural Technical Services; Tustin, R.C.; De Lange, M.; Reinecke, R.K.; Walker, Jane B.; De Kock, V.E. (Pretoria: Government Printer, 1970)
    Forty-four apparently healthy dogs and four normal cattle were given multiple therapeutic, sterilizing or higher dosages of Berenil, Phenamidine and quinoronium sulphate in order to determine the toxic effects of these ...
  • Experimental studies with Strongyloides papillosus in goats 
    Boomker, Jacob Diederik Frederik; Pienaar, J.G.; Basson, P.A.; Du Plessis, J.L.; Collins, H.M.; Naude, T.W.; Boyazoglu, P.A.; Reyers, Fred; Pienaar, W.L.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
    Unusual clinical and pathological observations in the field in goats and sheep suffering from Strongyloides papillosus infection prompted experimental work on this parasite. Goats were infected percutaneously with either ...
  • Furunculosis in rainbow trout (Salmo gairdneri) raised in sea water 
    Huchzermeyer, Fritz W.; Boomker, Jacob; Henton, Marijke M.; Naude, T.W.; Bigalke, R.D. (Published by The Government Printer, Pretoria, 1984)
    Ulcerative skin lesions were encountered in rainbow trout raised in sea water by a commercial concern in the Western Cape, South Africa. Grossly, the lesions resembled furunculosis but, histopathologically, they differed ...
  • A highly fatal tremorgenic mycotoxicosis of cattle caused by Aspergillus clavatus 
    Pienaar, J. G.; Van der Westhuizen, G.C.A.; Anderson, L.A.P.; Naude, T.W.; Kellerman, T. Stephanus; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Published by The Government Printer, Pretoria, 1976)
    During February 1975, a tremorgenic neurotoxicosis decimated a herd of cattle in the northern Transvaal. This hitherto unidentified disease was characterized by hypersensitivity, incoordination, a peculiar stiff-legged ...
  • Ingestion of the plant Fadogia monticola Robyns as an additional cause of gousiekte in ruminants 
    Hurter, L.R.; Naude, T.W.; Adelaar, T.F.; Smit, J.D.; Codd, L.E.; de Kock, V.E.; De Lange, M.; Bigalke, R.D.; Howell, P.G.; Reinecke, R.K.; Walker, Jane B. (Published by the Government Printer, Pretoria, 1972)
    Investigation of outbreaks of gousiekte in cattle in the northern Transvaal revealed that Fadogia monticola Robyns is an additional cause of this disease, which is characterized by sudden heart failure without prodromal ...
  • Investigation of biological samples for monofluoroacetate and Dichapetalum cymosum poisoning in southern Africa 
    Minnaar, P.P.; McCrindle, Robert Ian; Naude, T.W.; Botha, C.J. (Christoffel Jacobus); Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute ., 2000)
    A need has existed for the accurate identification of monofluoroacetate (MFA) poisoning in southern Africa. The development of a new method for the determination of MFA has made the analysis of a variety of biological ...
  • Lesions in sheep skeletal and oesophageal muscle in vermeersiekte (Geigeria ornativa O. Hoffm. poisoning) 
    Pienaar, J.G.; Kriek, N.P.J.; Naude, T.W.; Ellis, Shirley D.; Adelaar, T.F.; De Kock, V.E.; De Lange, M.; Bigalke, R.D.; Howell, P.G.; Reinecke, R.K.; Walker, Jane B. (Published by the Government Printer, Pretoria, 1973)
    Vermeersiekte in sheep, which is characterized clinically by vomition of ruminal contents, often accompanied by stiffness or paralysis, is caused by various plant species of the genus Geigeria. A histopathological study ...
  • Leukoencephalomacia : A mycotoxicosis of equidae caused by Fusarium moniliforme Sheldon 
    Marasas, Walter F.O. (Walter Friedrich Otto); Naude, T.W.; Pienaar, J.G.; Kellerman, T. Stephanus; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Published by The Government Printer, Pretoria, 1976)
    When 2 horses were dosed with cultures of a Fusarium moniliforme isolate that had previously caused only hepatosis, 1 developed brain oedema and hepatosis, and the other only leukoencephalomalacia. A 3rd horse developed ...
  • A mycotoxicosis of Equidae caused by Fusarium moniliforme Sheldon. A preliminary communication 
    Kellerman, T. Stephanus; Marasas, Walter F.O. (Walter Friedrich Otto); Pienaar, J.G.; Naude, T.W.; De Kock, V.E.; De Lange, M.; Bigalke, R.D.; Howell, P.G.; Reinecke, R.K.; Walker, Jane B. (Published by the Government Printer, Pretoria, 1972)
    Fusarium moniliforme Sheldon was isolated from maize suspected of causing field cases of leucoencephalomalacia in horses in South Africa. It was cultured on autoclaved maize and dosed to three horses and three donkeys. One ...
  • Observations on the clinical, cardiac and histopathological effects of fluoroacetate in sheep 
    Coetzer, Jacobus A.W.; Schultz, R.A. (Rowena Anitra); Kellerman, T. Stephanus; Naude, T.W.; Steyn, P.J.J.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Jordaan, E.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Published by The Government Printer, Pretoria, 1982)
    Fluoroacetate was dosed per stomach tube to 17 Merino sheep at the rate of 0,05 - 1,0 mg/kg/day. The clinical signs, haemodynamic changes, chemical pathology and pathology of acute, subacute and chronically intoxicated ...
  • Photosensitivity in South Africa. 1. A comparative study of Asaemia axillaris (Thunb.) Harv. Ex Jackson and Lasiospermum bipinnatum (Thunb.) Druce poisoning in sheep 
    Basson, P.A.; Kellerman, T. Stephanus; Naude, T.W.; Van Rensburg, I.B.J.; Welman, Wilhelmina G.; De Kock, V.E.; De Lange, M.; Bigalke, R.D.; Howell, P.G.; Reinecke, R.K.; Walker, Jane B. (Pretoria : The Government Printer, 1973)
    Experimental evidence is presented to confirm field observations that Asaemia axillaris (Thunb.) Harv. ex Jackson and Lasiospermum bipinnatum (Thunb.) Druce cause ovine hepatogenous photosensitization. The two plants have ...
  • Studies on South African cardiac glycosides. I. Isolation of toxic principles of Homeria glauca (W. & E.) N.E. Br. and observations on their chemical and pharmacological properties 
    Naude, T.W.; Potgieter, D.J.J.; South Africa. Dept. of Agricultural Technical Services; De Lange, M.; Reinecke, R.K.; Walker, Jane B.; De Kock, V.E.; Howell, P.G. (Pretoria : Government Printer, 1971)
    The main toxic principle (1α, 2α-epoxyscillirosidin, a new bufadienolide cardiac aglycone) was isolated by very mild isolation techniques constantly correlated with semi-quantitative toxicity determinations in ...
  • Studies on South African cardiac glycosides. II. Observations on the clinical and haemodynamic effects of cotyledoside 
    Naude, T.W.; Schultz, R.A. (Rowena Anitra); Steyn, P.J.J.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Jordaan, E.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Published by The Government Printer, Pretoria, 1982)
    Cotyledoside, a bufadienolide isolated from Tylecodon wallichii (Harv.) Toelken, subs. wallichii (=Cotyledon wallichii Harv.), was dosed to guinea-pigs and sheep. In guinea-pigs, the oral and subcutaneous LD₅₀ values were ...
  • The toxicology and pathology of dieldrin and photodieldrin poisoning in two antelope species 
    Wiese, I.H.; Basson, P.A.; Naude, T.W.; Maartens, B.P.; Basson, N.C.J.; De Kock, V.E.; De Lange, M.; Bigalke, R.D.; Howell, P.G.; Reinecke, R.K.; Walker, Jane B. (Published by the Government Printer, Pretoria, 1973)
    Blesbuck (Damaliscus dorcas phillipsi) and springbuck (Antidorcas marsupialis) were found to be more susceptible to dieldrin and its photoisomer than any vertebrates reported on previously in the literature. In blesbuck ...
  • Trout mortalities as a result of Streptococcus infection 
    Boomker, Jacob Diederik Frederik; Imes, G.D.; Cameron, Colin McKenzie; Naude, T.W.; Schoonbee, H.J.; Steyn, P.J.J.; Bigalke, R.D.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B.; Cameron, Colin McKenzie; Gilchrist, Frances M.C. (Published by The Government Printer, Pretoria, 1979)
    Excessive mortalities were experienced in the bigger rainbow trout (Salmo gairdneri) at an efficiently managed trout farm. All tests for known toxins in the feed and water proved to be negative. A faecal Streptococcus which ...