Descubre y comparte nuestro conocimiento público

Se han encontrado 19.769 recursos

Resultados de búsqueda

Plant density and tiller cunts were done in several Sahelian rangelands in Mali, under a variety of soil, rainfall and grazing situations. Numeric models were developed to explain the dynamic relationship between grass tillering and herb density. Tests of application of these models to the plant ...


Hiernaux, Pierre H.Y.Leeuw, P.N. deDiarra, L.[Modelling tillering of annual grasses as a function of plant density: Application to Sahelian rangelands productivity and dynamics]Modelling tillering of annual grasses as a function of plant density: Application to Sahelian rangelands productivity and dynamics

Animal traction in Ethiopia has been used since the third millennium B.C. Its use is confined to land preparation and seed covering using the traditional implement 'maresha' pulled mainly by a pair of oxen under a ridged neck yoke. Even though research to replace the 'maresha' and the multi-purpo...


Astatke, A.Gebresenbet, G.[Draft animal power and its research in Ethiopia]Draft animal power and its research in Ethiopia
Autor: Francis, P.A.

Examines the influence of breed, sex, live-weight and time & place of sale on small ruminant prices in six southwest Nigerian markets. Assesses the relationship of prices between markets and the degree of integration between them. Includes a brief description of the structure of small-ruminant ma...


Francis, P.A.[Small ruminant marketing in southwest Nigeria]Small ruminant marketing in southwest Nigeria

This study in northern Ethiopia investigated local people's perception of climate change and the role of indigenous silvopastoralism in adaptation to that change. Two hundred and forty respondents participated in a questionnaire survey and group discussions. Local communities perceive climate cha...


Balehegn, M.Eik, L.O.Tesfay, Y.[Silvopastoral system based on Ficus thonningii: An adaptation to climate change in northern Ethiopia]Silvopastoral system based on Ficus thonningii: An adaptation to climate change in northern Ethiopia

Four single-strand conformation variants of the bovine tumor necrosis factor alpha gene by analysis of PCR-amplified fragments were identified. The variants are inherited in Mendelian fashion and are informative for linkage mapping. We have mapped the bovine gene to Chromosome (Chr) 23 in a panel...


Agaba, MorrisKemp, Stephen J.Barendse, W.Teale, A.J.[Polymorphism at the bovine tumor necrosis factor alpha locus and assignment to BTA 23]Polymorphism at the bovine tumor necrosis factor alpha locus and assignment to BTA 23

Human chromosome (Chr) 18(HSA 18) contains approximately 85 million base pains of DNA. Thirty genes and pseudogenes have been mapped to HSA 18 by somatic cell genetics or in situ hybridization. Two bovine genes - Yamaguchi sacroma viral oncogene homology 1 (YESI) and desmocollin type 1 (DSC1) - h...


Agaba, MorrisKemp, Stephen J.Barendse, W.Teale, A.J.[Comparative mapping in cattle of genes located on human chromosome 18]Comparative mapping in cattle of genes located on human chromosome 18

There is an alarming rate of human African trypanosomiasis recrudescence in many parts of sub-Saharan Africa. Yet, the disease has no successful chemotherapy. Trypanosoma lacks the enzymatic machinery for the de novo synthesis of purine nucleotides, and is critically dependent on salvage mechanis...


Tomoaki BesshoShoko MoriiToshihide KusumotoTakahiro ShinoharaMasanori NodaSusumu UchiyamaSatoshi ShutoShigenori NishimuraShigenori NishimuraDuszenko, M.Martin, S.K.Takashi InuiKubata, K.B.[Characterization of the novel Trypanosoma brucei inosine 5′-monophosphate dehydrogenase]Characterization of the novel Trypanosoma brucei inosine 5′-monophosphate dehydrogenase

Blood samples were collected from parasitaemic cattle in the Ghibe Valley, Ethiopia, frozen in liquid nitrogen and transported to Nairobi, Kenya. Twelve of the stabilates were inoculated into individual Boran (Bos indicus) calves and characterised for their sensitivity, in turn, to diminazene ace...


Codjia, V.Mulatu, W.Majiwa, P.A.O.Leak, S.G.A.Rowlands, G.J.Authié, E.D'Ieteren, G.D.M.Peregrine, A.S.[Epidemiology of bovine trypanosomiasis in the Ghibe valley, southwest Ethiopia. 3. Occurrence of population of Trypanosoma congolense resistant to diminazene, isometamidium and homidium]Epidemiology of bovine trypanosomiasis in the Ghibe valley, southwest Ethiopia. 3. Occurrence of population of Trypanosoma congolense resistant to diminazene, isometamidium and homidium

An average of 840 East African Zebu cattle from nine herds in the Ghibe Valley, southwest Ethiopia were monitored from 1986 to 1990. Each month blood samples were collected from analysis of packed red cell volume and detection of trypanosomes. Animals were found to be parasitaemic and with a PCV ...


Rowlands, G.J.Mulatu, W.Authie, A.D'Ieteren, G.D.M.Leak, S.G.A.Nagda, S.M.Peregrine, A.S.[Epidemiology of bovine trypanosomiasis in the Ghibe Valley, southwest Ethiopia. 2. Factors associated with variations in trypanosome prevalence, incidence of new infections and prevalence of recurrent infections]Epidemiology of bovine trypanosomiasis in the Ghibe Valley, southwest Ethiopia. 2. Factors associated with variations in trypanosome prevalence, incidence of new infections and prevalence of recurrent infections

GI nematodes are most commonly controlled by chemotherapy. Anthelmintic efficacy is decreasing as drug resistance becomes widespread and other approaches are needed. Knowledge of protective immunity against GI parasites is important for the development of vaccine strategies. Success in this field...


Behnke, J.M.Lowe, A.Menge, M.Iraqi, F.A.Wakelin, D.[Mapping genes for resistance to gastrointestinal nematodes]Mapping genes for resistance to gastrointestinal nematodes

Selecciona los documentos para visualizarlos

Nombre del archivo Ver recurso