Browsing by Author "Urquhart, G.M."
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Item Experiments in Immunity to East Coast Fever(1965) Brocklesby, D.W.; Bailey, K.P.; Jarrett, W.F.H.; Martin, W.B.; Miller, H.R.P.; Nderito, P.; Urquhart, G.M.; University of East Africa, P.O. Kabete, KenyaSpleen suspension from cattle in the late hyper-plastic stage of Theileria parva infection, injected i/v in doses of 0.1-5 ml., protected 15 of 19 cattle from tick-induced infectionItem The Numbers of Crossocephalus Viviparus (Nematoda: Atractidae) In the Zebra (Equus Burchellii Bohmi(1961) East African Agricultural and Forestry Journal; Urquhart, G.M.; Hay, D.Urquhart & Hay have attempted to estimate the number of nematodes occurring in the large intestine in infections of Crossocephalus viviparus in Equus burchellii. One large intestine and three caeca were removed from four apparently healthy zebras of similar size shot at Konza, Kenya. The volume of ingesta in the entire large intestine was 60 litres. The number of nematodes estimated by dilution counts of representative samples of the ingesta and expressed as total numbers of male, female and immature worms in the large intestine of each zebra ranged from 96, 000 (1.6 worms per ml. of ingesta) to 3, 750, 000 (62 worms per ml. of ingesta), the latter figures being those for the entire large intestine.Item The Production of Experimental Cysticercosis in Calves in Kenya(1958) Urquhart, G.M.; East African Veterinary Research OrganizationThe incidence of cysticercosis in cattle slaughtered for human consumption is high in many parts of East Africa, e.g. during 1956 at Athi River Abattoir the largest in East Africa, cysts were detected in 30. 6o of European and 29 4 % of African stock; these figures were based on routine carcass incisions in 45,000 cattle (Ginsberg, Cameron, Goddard and Grieve, 1956). In 1957, cysticercosis had increased to 39.6% in European- and to 44.20'0 in African-owned cattle at this abattoir (MacOwan, 1958).Item Some Internal Parasites of Game Animals in Kenya(1960) Urquhart, G.M.; Hay, D..; Zaphiro, D.H.R.; East African Veterinary Research Organization: Kenya Game Department: East African Agriculture and Forestry Research OrganizationIn this paper, written for those who are concerned with wild-life preservation but not specialized in parasitology, the authors deal mainly with insect and helminth parasites of zebra (Equus burchellii), wildebeest (Gorgon taurinus), Grant's gazelle (Gazella grand) and Thomson's gazelle (G. thomsoni) in Kenya. The common helminth parasites of these animals are described, and notes are added on the sites in which they are found and their possible economic importance and life-history. Advice to collectors on labelling is given and they are referred to a booklet on preservation methods obtainable from the East African Veterinary Research Organization, Muguga, Kenya. The interest and value of, and great need for further research on, parasites of game animals is emphasized. Photographs illustrate the paperItem The Transmission of East Coast Fever Using Cells from Infected Animals(1964) Jarrett, W.F.H.; Jennings, S.; Martin, W.B.; Urquhart, G.M.; Nderito, P.; Brocklesby, D.W.; Bailey, K.P.; University of Glasgow Veterinary Hospital, Glasgow (U.K.); Veterinary Faculty, University of East Africa; E.A.V.R.O. Muguga (Kenya)This chapter describes the transmission of east coast fever using cells from infected animals. Four experiments using 26 cattle were carried out. In the first, a suspension of spleen and lymph node cells was prepared from a field case which was in the late hyperplastic stage of the disease. It was implanted interperitoneally into two animals, both of which showed a typical severe clinical and pathological reaction. They were killed in the late hyperplastic stage and cell suspensions prepared from their spleens. Two further passages were then carried out using a similar technique but smaller volumes of cells. It is found that of the 16 animals infected, 7 died, or were killed in extremis, 6 reacted severely and recovered, while 3 showed a clinical reaction but did not have demonstrable parasites. In the second experiment, cells from a field case were implanted by the interperitoneal route into an animal, and when this was in extremis it was killed and a cell suspension was prepared. The intravenous route was then used successfully to infect two other cattle.Item Warble Larvae in Grant's Gazelle(1960) Urquhart, G.M.About 100 larvae were present under the skin of a Grant's gazelle shot in Kenya. The identity of the larvae is under investigation. One larva was present in 1 of 2 immature males shot in the same area while in 2 mature males whitish rounded scars (which could have been caused by larvae) were observed in the fascia covering the longissimus dorsi muscles. It is considered that this may be the first record of warble-fly larvae in indigenous cloven-hoofed animals in East Africa. -T.E.G.R.
