Affiner votre recherche
Résultats 21-30 de 53
Continuous exposure to an aversive mixture as a means of maintaining aversion to vermeerbos (Geigeria ornativa O. Hoffm.) in the presence of non-averted sheep
2002
Snyman, L.D. | Schultz, R.A. | Kellerman, T.S. | Labuschagne, L. (Agricultural Research Council, Onderstepoort (South Africa). Onderstepoort Veterinary Inst.)
Effects of the scab mite Psoroptes ovis on the haematology and live mass of Merino and Dorper sheep
2002
Meintjes, T. | Fourie, L.J. | Horak, I.G. (Free State Univ., Bloemfontein (South Africa). Zoology and Entomology Dept.)
Refugia - overlooked as perhaps the most potent factor concerning the development of anthelmintic resistance
2001
Van Wyk, J.A. (Pretoria Univ., Onderstepoort (South Africa). Veterinary Tropical Diseases Dept.)
Seasonal variation in cotyledoside concentration of Tylecodon wallichii (Harv.) Tolken subsp. wallichii sampled in a krimpsiekte-prevalent region
2001
Botha, C.J. (Pretoria Univ., Onderstepoort (South Africa). Pharmacology and Toxicology Dept.) | Rundberget, T. | Wilkins, A.L. | Mulders, M.S.G. | Flaoyen, A. | Van Aardt, M.P.
A survey on anthelmintic resistance in nematode parasites of sheep in Lusaka, Zambia
2001
Gabriel, S. | Phiri, I.K. (Zambia Univ., Lusaka (Zambia). Clinical Studies Dept.) | Dorny, P. | Vercruysse, J.
Krimpsiekte in a sheep following a single dose of Tylecodon ventricosus (Burm. f.) Toelken and the isolation of tyledoside D from this plant species
1998
Botha C.J. | Kellerman, T.S. (Pretoria Univ. (South Africa). Dept. of Pharmacology and Toxicology) | Schultz, R.A. | Erasmus, G.L. | Vleggaar, R. | Retief, E.
Solid-phase extraction and HPLC determination of levamisole hydrochloride in sheep plasma
1996
Du Preez, J.L. | Lotter, A.P. (Potchefstroom Univ. for Higher Christian Education (South Africa). Research Inst. for Industrial Pharmacy)
Attachment preferences of Hyalomma truncatum and Hyalomma marginatum rufipes ticks (Acari: Ixodidae) on two sheep breeds
1995
Fourie, L.J. | Kok, D.J. (Orange Free State Univ., Bloemfontein (South Africa). Dept. of Zoology and Entomology)
The role of Hyalomma ticks in foot infestations and temporary lameness of sheep in a semi-arid region of South Africa
1995
Kok, D.J. | Fourie, L.J. (Orange Free State Univ., Bloemfontein (South Africa). Dept. of Zoology and Entomology)
The distribution of Pasteurella haemolytica serotypes among cattle, sheep and goats in South Africa and their association with disease
1995
Odendaal, M.W. (Agricultural Research Council, Onderstepoort (South Africa). Onderstepoort Veterinary Inst.) | Henton, M.M.
