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Bovine testes and bovine embryo kidney cells were infected with the bovine viral diarrhoea virus Oregon strain. Detergent treatment of infected cells released the antigenic particles which were subsequently coated onto microtitre plates. As a control, antigen was prepared in the same way from uninfected cells. An established direct ELISA for antigen detection demonstrated that antigen can be p ...

SUBJECT: inmunologia; diarrhee; virosis; testicule; diarrhoea

Tick resistance to dips.

Duncan I.M. [1993]

This article deals with the single most important production restraint in Africa south of the Sahara: ticks and tickborne diseases, and associated with that, tick resistance to dips. It discusses how resistance occur. Its development and the speed at which this development takes place depend on the following factors: the number of initially resistant individuals existing in the target pest pop ...

SUBJECT: acaricides; pest resistance; pests; resistance aux produits chimiques; enfermedades transm por garrapatas

POSTED TO: The Farmer

Prospects for tick control in Zambia.

Pegram R.G. et al. [1991]

A historical review of animal health and production in Africa indicates that the origin of tick control coincides with the introduction of exotic cattle by the European settlers at the turn of the century. Thereafter, it was considered essential to dip indigenous cattle and, in many African countries, there was legislation to enforce tick control. However, it has been noted that countries lack ...

SUBJECT: fenologia; enquete pathologique; enfermedades transm por garrapatas; control de plagas; epidemiologie

POSTED TO: Zimbabwe Veterinary Journal

Compulsory short-interval dipping of cattle for tick control has been enforced in Zimbabwe since the early part of this century. Intensive dipping was initially introduced as a measure to control East Coast fever (ECF), following its introduction from eastern Africa. Dipping was subsequently found to be effective in the control of heartwater and other tick-borne diseases, and it continued to b ...

SUBJECT: piroplasmose; bacteriosis; boophilus decoloratus; control de enfermedades; enfermedades transm por garrapatas

POSTED TO: Zimbabwe Veterinary Journal

This paper presents a conceptual framework for investigating the relationship between human behaviours and animal disease in smallholder agriculture. The paper begins with a brief introduction to farming systems research (FSR) principles, and with a discussion of FSR concepts that are relevant to animal disease control in the context of overall farm management. It then presents the framework i ...

SUBJECT: control de enfermedades; trabajo; systeme d' exploitation agricole; revenu de l' exploitation; utilisation de l' eau

POSTED TO: Zimbabwe Veterinary Journal

The bioavailability of phenylbutazone was investigated in six adult cattle in a crossover study after intravenous and oral administration of the drug at a dose rate of 4.4 mg/kg. The drug concentration in plasma was determined in each administration route. The mean bioavalilability for the granular formulation was 56.9 and a considerable variation between animals occurred. The mean maximum pla ...

SUBJECT: phenylbutazone; drugs; fenilbutazona; therapy; terapia

POSTED TO: Zimbabwe Veterinary Journal

The paper discusses the need to line infield canals because of the light soils in Zimbabwe, the undulating steep slopes, the prevalence of bilharzia and the management of the environment of the smallholder irrigation schemes, large or small. For smaller schemes brick lined canals may be more suitable for the following reasons: very low external costs, the only external costs are the steel eart ...

SUBJECT: construccion de edificios; quality controls; reseau de drainage; red de drenaje; design

POSTED TO: Farming World with Murimi Umlimi: The Journal of the Zimbabwe National Farmers' Union

This report describes, analyses and proposes solutions to environmental issues and problems in Zimbabwe. The focus is on the sustainability of the environment and it goes beyond sustaining i.e., conserving, the environment. It has been expanded to include the sustainability of human resource. There must be enough jobs, land, food and energy to meet people's basic needs while still sustaining t ...

SUBJECT: vivienda; utilizacion de la tierra; proteccion ambiental; economic development; pollution

SUBJECT: protection des plantes; seguridad alimentaria; securite alimentaire; plagas migratorias; organisme nuisible migrateur

SUBJECT: agriculture; zimbabwe; agricultura