Medicago sativa and Trifolium species

dc.contributor.authorBotha, C.J. (Christoffel Jacobus)
dc.contributor.authorVenter, Elna
dc.contributor.emailchristo.botha@up.ac.zaen
dc.contributor.otherUniversity of Pretoria. Faculty of Veterinary Science. Dept. of Paraclinical Sciences. Section Pharmacology and Toxicology
dc.coverage.spatialAfricaen
dc.coverage.spatialSouth Africaen
dc.date.accessioned2008-12-23T07:17:21Z
dc.date.available2008-12-23T07:17:21Z
dc.date.issued2002
dc.descriptionColour photos. Final web-ready size: JPEG, 72 ppi. Photo 1: 17.2 kb; Photo 2: 9.7 kb; Photo 3: 23.8 kb; Photo 4: 31.3 kb; Photo 5: 27.8 kb; Photo 6: 6.72 kb. Original TIFF file housed at the Dept. of Paraclinical Sciences, Section Pharmacology and Toxicology, University of Pretoria.en
dc.description.abstractDISTRIBUTION: 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.en
dc.description.abstractBOTANICAL DESCRIPTION: Trifolium repens: Low growing, spreading plants with trifoliate leaves, sometimes mistaken for grass.en
dc.description.abstractTOXIC PRINCIPLE: Frothy bloat: Saponins and glycoproteins.en
dc.description.abstractMECHANISM OF ACTION: • Soluble proteins escape rapidly from fragile thin-walled cells of above species during cellulose digestion. • This results in changes in surface tension of ruminal fluid and stabilization of gas bubbles in rumen. • Critical concentration of several surface-active agents leads to persistent, rigid foam. Phyto-oestrogenism: • The toxic principles of the clovers are various isoflavone glycosides, which are inherently oestrogenic and/or are biotransformed in the rumen to active or inactive compounds. • The oestrogenic compounds contained in lucerne are coumestans.en
dc.description.abstractSYNDROMES: Frothy bloat, ABPE, Phyto-oestrogenism.en
dc.description.abstractSYSTEMS AFFECTED: Gastro-intestinal, urogenital and respiratory systems.en
dc.description.abstractCLINICAL SIGNS: Frothy bloat: • Severe bloat, distended abdomen. • Ruminal atony. • Dyspnoea. Phyto-oestrogenism: • Infertility.en
dc.description.urihttp://www.library.up.ac.za/vet/poisonen
dc.identifier.citationBotha, CJ & Venter, E 2002, 'Plants poisonous to livestock Southern Africa (CD-ROM)' University of Pretoria, Faculty of Veterinary Science, Dept. of Paraclinical Sciences, Section Pharmacology and Toxicology, Pretoria, South Africa.en
dc.identifier.urihttp://hdl.handle.net/2263/8543
dc.rights©University of Pretoria. Dept. of Paraclinical Sciences, Section Pharmacology and Toxicology (Original and digital). Provided for educational purposes only. It may not be downloaded, reproduced or distributed in any format without written permission of the original copyright holder. Any attempt to circumvent the access controls placed on this file is a violation of copyright laws and is subject to criminal prosecution. Please contact the collection administrator for copyright issues.en
dc.sourceOriginal format: University of Pretoria, Faculty of Veterinary Science.en
dc.subjectPlant poisoningen
dc.subjectToxicologyen
dc.subjectPlant poisoning in animalsen
dc.subjectPoisonous plantsen
dc.subjectFrothy bloaten
dc.subjectABPEen
dc.subjectAcute Bovine Pulmonary Oedema and Emphysemaen
dc.subjectPhyto-oestrogenismen
dc.subjectSaponinsen
dc.subjectGlycosidesen
dc.subjectClover diseaseen
dc.subject.lcshPoisonous plants -- Toxicology -- Africa, Southernen
dc.subject.lcshVeterinary toxicologyen
dc.titleMedicago sativa and Trifolium speciesen
dc.title.alternativeMedicago sativaen
dc.title.alternativeLucerneen
dc.title.alternativeTrifolium pratenseen
dc.title.alternativeRed cloveren
dc.title.alternativeRooiklaweraf
dc.title.alternativeTrifolium repensen
dc.title.alternativeWhite cloveren
dc.title.alternativeWitklaweraf
dc.title.alternativeTrifolium subterraneumen
dc.title.alternativeSubterranean cloveren
dc.title.alternativeCloveren
dc.title.alternativeLusernaf
dc.title.alternativeKlaweraf
dc.title.alternativeLucerneen
dc.typeStill Imageen

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