Browsing Slide Collection (Paraclinical Sciences - Pharmacology & Toxicology) by Issue Date

Browsing Slide Collection (Paraclinical Sciences - Pharmacology & Toxicology) by Issue Date

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  • Phytobezoariasis 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    TOXIC PRINCIPLE: Mechanism of formation: • Plant hairs are apparently poorly digested by ruminal micro-organisms and accumulate in especially the abomasum. • Here under the influence of abomasal movement, innumerable ...
  • Medicago sativa and Trifolium species 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    DISTRIBUTION: Trifolium spp. as well as Medicago spp. were imported from Europe and Asia to grow as fodder for stock. The Oudtshoorn district is responsible for about 90% of the lucerne seed produced in South Africa.
  • Solanum tettense 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    DISTRIBUTION: It grows on flats or hill slopes, and on sandy, loamy or stony soil, especially where the soil is overgrazed or disturbed. Once S. kwebense becomes established in an area, no grass will grow in its vicinity.
  • Grasses and weeds 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    Aristida spp. Three-awned grass, Steekgras. DISTRIBUTION: Usually to be found in disturbed, eroded soil or on hard bare gravelly soils.
  • Galenia africana 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    DISTRIBUTION: An active invader, often in disturbed areas and over-grazed land. Most common on the western and southern edges of the Karoo.
  • Exotic Acacia species 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    DISTRIBUTION: Originally from Australia. Now aggressive invader species to be found all over the country.
  • Lantana camara 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    DISTRIBUTION: Originally from Central and South America, it is now a serious invading plant. More commonly found in the moist eastern parts of the country. Often cultivated as a garden subject.
  • Poaceae 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    DISTRIBUTION: Widespread grasses that occur naturally in all kinds of veld types.
  • Amaranthus species 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    MECHANISM OF ACTION: In the rumen nitrate is reduced to nitrite and following absorption haemoglobin is oxidised to methaemoglobin.
  • Fusarium verticillioides 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    DISTRIBUTION: A fungus that is one of the most prevalent moulds on harvested maize throughout the world. Maize is produced mainly in the North-West, the north-western, northern and eastern Free State, the Mpumalanga ...
  • Hypericum species 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    DISTRIBUTION: Occurs in a wide variety of habitats, most commonly in stony areas or open grassland. Also near water, in marshy or damp places, between rocks as well as on old lands.
  • Non-toxic Dichapetalum cymosum look-alike plants 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    Pygmaeothamnus zeyheri: (Goorappel) Distribution: To be found in warm, sub-tropical, usually dry areas. In acid, sandy soil and on stony hills – not in marshy areas or clay soils. Usually part of a typical plant community ...
  • Trachyandra species 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    DISTRIBUTION: T. laxa is mainly found in grassveld areas, while T. divaricata grows in the sandy soil and dunes of the south-western areas of the Cape Province.
  • Datura species 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    DISTRIBUTION: Possibly originating in tropical America, it is now widely distributed in South Africa, especially in disturbed soil, like seasonal river courses, cultivated lands and along roadsides.
  • Gomphocarpus fruticosus 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    DISTRIBUTION: Widely-spread, to be found along roadsides, old cultivated lands, etc. all across the country.
  • Crotalaria species 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    DISTRIBUTION: Usually in grassland. C. dura grows from sea level to 900 m above, while C. globifera can grow up to 1 500 m above sea level.
  • Helichrysum argyrosphaerum 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    DISTRIBUTION: • It occurs in sandy areas – often a weed in disturbed places • Widespread
  • Moraea species 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    DISTRIBUTION: H. pallida occurs all over South Africa under a variety of climatic conditions, topographical situations and soil types • M. polystachya is widely distributed in dry areas like Botswana, Namibia, Kalahari, ...
  • Pavetta species 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    DISTRIBUTION: • P. schumanniana occurs mainly in the high rainfall areas and in sour bushveld, showing a preference for sour, stony veld or mountain slopes. • Usually in the open, but also found among bushes and under ...
  • Acacia nilotica 
    Botha, C.J. (Christoffel Jacobus); Venter, Elna; University of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology (2002)
    DISTRIBUTION: Can grow under a variety of ecological conditions, though generally absent from shallow gravelly soils as well as wet watercourses. Botanical description: General: It is a small to medium-sized deciduous ...