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Browsing South African National Veterinary Repository by Author "Schoonbee, H.J."
Now showing items 1-7 of 7
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Theron, J.; Prinsloo, J.F.; Schoonbee, H.J.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute., 1991)Prophylactic dip treatments using formalin and malachite green were applied to 4-day old larvae and 12- and 20-day old juveniles of the European common carp, Cyprinus carpio and the African sharptooth catfish, Clarias ...
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Some observations on the narcotizing ability of electric currents on the common carp Cyprinus carpio Barham, W.T.; Schoonbee, H.J.; Visser, J.G.J.; Verwoerd, Daniel Wynand (Published by the Government Printer, Pretoria., 1989)Some effects of alternating current electronarcosis and of rectified current electronarcosis on C. carpio were investigated. In all instances recovery from narcosis was accompanied by convulsive spasms. Haemorrhaging of ...
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Theron, J.; Prinsloo, J.F.; Schoonbee, H.J.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute., 1991)Malachite green and formalin were investigated as prophylactic dip treatments for developing embryos of Cyprinus carpio and Clarias gariepinus. Based on the findings, recommendations are made on the respective concentrations ...
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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 ...
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Barham, W.T.; Schoonbee, H.J.; Visser, J.G.J.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)Procedures to narcotize fish by means of alternating or direct electrical currents are described and a method of evaluating the narcotic effects on fish of electrical currents is detailed. The role of fish length on the ...
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Barham, W.T.; Schoonbee, H.J.; Visser, J.G.J.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1988)The effects of wave form, voltage, frequency and current as well as application time on the narcotizing ability of alternating current were investigated. A 60 Vrms, 50 Hz sine wave current applied for 30 s produced narcosis ...
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Barham, W.T.; Schoonbee, H.J.; Visser, J.G.J.; Verwoerd, Daniel Wynand (Published by the Government Printer, Pretoria., 1989)The narcotizing potential of various rectified current configurations on Oreochromis mossambicus was investigated. A 50 Hz, 200 Vp. half-wave rectified current, applied for 30 s, was found to be a suitable configuration ...
Now showing items 1-7 of 7