Browsing by Author "Cheruiyot, H.K."
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Item Caprine and Ovine Fascioliasis in Kenya-Abattoir-Survey 1978-1982(1987) Cheruiyot, H.K.; KARI, PO Box 32, Kikuyu, KenyaA study of meat inspection records between 1978-82 showed that the mean prevalence of fascioliasis was 4.4% in sheep and 3% in goats. The prevalence rate was highest in Nyanza (5.6-21.7% in sheep and 3.5 to 11.3% in goats) and lowest in Coast province (0.2% in sheep, zero in goats). The pattern of variation in the distribution of fascioliasis in sheep and goats was similar to that in cattle, although the overall prevalence was lower.Item Effect of sodium benzene sulphonate on adults and eggs of Lymnaea natalensis(1982) Cheruiyot, H.K.SODIUM benzene sulphonate is an important ingredient in most synthetic detergents. In Kenya, it was observed that one of these detergents (Omo; Unilever) was capable of killing the adult snail Lymnaea natalensis, intermediate host of the liver fluke Fasciola gigantica, in less than 24 hours at a concentration of 1 to 5 percent. The same concentration of the detergent killed the eggs of L lIatalensis within 36 hours, and miracidia of F gigantica in about three minutes. It became evident that the active component of the detergent against these organisms was sodium benzene sulphonate, so the effect of this compound on aOl.lIt snails, snail eggs and miracidia of F gigantica was aied. For comparison, a similar study was undertaken using N-tritylmorpholine (Frescon; Shell) and copper sulphate solutions, the molluscicidal properties of which are well knownItem Journal Brief the Role of "Miracidial Days" in the Epidemiology of Fascioliasis(1979) Cheruiyot, H.K.; Wamae, L.W.; Veterinary Research DepartmentOne of the phenomena in fascioliasis is that after incubation, eggs of Fasciola do not all hatch at the same time (Thomas, 1883; Dinnik, 1956-1957; Dinnik and Dinnik, 1959). The exact period, however, when miracidia continue 10 be hatched from a given batch of eggs at specified field or laboratory conditions has not been clarified. This period of time "miracidial days" may be crucial in the epidemiology of this parasite since the snail intermediate hosts are continuously at risk of infection from a single batch of eggs. This study was designed to determine the length of time miracidia would be present in a given batch of incubating eggs of Fasciola gigantica.Item Kari Narp 11 Project Preparation Report 1995(Kenya Agricultural Research Institute, 1995) Abate, A.N.; Cheruiyot, H.K.; Kimani, L.W.; Kiome, R.M.; Hinga, G.; Madumadu, G.G.; Mailu, A.M.; Matata, J.B.W.; Mbabu, A. ; Muchena, F.N.; Mulandi, J.C.; Mulandi, J.C.; Ngundo, B.W.; Wandera, J.K.; Oketch, A.G.O.; Kamau, C.R.; Kenya Agricultural Research Institute; ODA; Rockfeller Foundation; World Bank; Royal Netherlands Embassy; USAIDAlthough most sectors of Kenya's economy have developed considerably over the last fewd ecades, the agricultural sector still remains the mainstay of Kenya's economy. Kenya still relies heavily on the agricultural sector- for generation of income, employment, foreign exchange earnings and the provision of raw materials for the industrial sector. The priority of Kenya's agricultural policy is to achieve internal self sufficiency in food supply, to maintain adequate levels of strategic food reserves and to generate a surplus of .crop and livestock produce for export. In 1990 the sector accounted for 28.2% of Gross Domestic Product (GDP). It employs over 70% of the rural workforce and generates about 64% of export earnings. Between 1985 and 1990 agriculture grew at an average rate of 4.1 % per annum but stagnated at 2% in 1992 and 1993 (GoK, 1994). Given major constraints posed by rapid human population increases and scarcity of arable land, accelerated agricultural growth can only be achieved by increasing the productivity of the fixed land base. The growth requires development of production incentives, services and institutions needed to encourage innovation and investment.Item Laboratory observations of the actions of Glinus lotoides (Fam Aizoacea) fruit on snail hosts of Fasciola and Schistosoma in Kenya(1984) Broberg, G.; Cheruiyot, H.K.; Wachira, T.M.; Veterinary Research Department; Kenya Agricultural Research InstituteFollowing the reports of the action of Glinus lotoides (Fam. Aizoaceae) on the miracidia of Fasciola gigantica and Schistosoma mansoni (Broberg, 1980) we would like to report further observations on the effects of this plant on snail hosts of veterinary and medically important trematodes in Kenya. Lymnaea natalensis is the principal snail host for F. gigantica in this country. Biomphalaria pJeifferi transmits S. mansoni, while S. haematobium is trammitted by Bulinus aJricanus and B. nasutus. Except for B. nasutus, these snail species are routinely cultured in this laboratory.Item Why Whole Meat is Condemned at Slaughter(1988) Cheruiyot, H.K.; Kenya Agriculture Research InstituteWorms are perhaps the most common. parasites that live in' the stomachs, intestines and other organs of livestock and draw nourishment from the food taken by the animal. They take in food often in the of blood, digested food or body tissues, depriving the animal necessary nutrients in the process. This leads to delayed growth and unthriftiness and as a result of poor feed conversion or absorption, the animal tends to eat more than necessary without fattening or increase in milk production. Common worms of economic importance in Kenya fall into three main groups namely: Roundworms; Flukes and Tapeworms.
