The systems of livestock production, marketing and research have been profoundly transformed by recent policies in Central Asia since the break up of the Soviet Union. Decollectivisation of state farms has transferred livestock ownership to new private farming units. These receive little or no state support for inputs, or for processing and selling livestock products. Most livestock-keeping families have much-reduced incomes compared to the Soviet period.

This introductory paper raises general issues and poses questions that are pursued in the other papers. The initial premise of this paper is that impact cannot be discussed in isolation from the broader context of research and development and the overall priorities guiding the centres research, training, and networking activities.

Inadequate feed supplies remain a major constraint to sustainable cattle production in general, and milk production in particular, in smallholder production systems throughout sub-Saharan Africa. In the emerging peri-urban dairy production systems in West and central Africa, for example, poor development of feed resources has invariably resulted in milk production being sustained at comparatively high feed costs, thus reducing the competitiveness of locally produced milk.

This volume presents major results obtained since the publication of volume 1 and 2 and updates national data on trypanotolerant cattle. The first part analyses populations and their trends between the two surveys and reviews research activities and development activities. It also gives recent information available on the potential and utilisation of trypanotolerant livestock. Part two presents recent data for the 18 study countries, as well as for Equatorial Guinea which was not covered in volume 2.

The Land van Heusden (at present Province of Northernsituated in the western part of the river-area of the Central Netherlands. In the medieval period it consisted of sixteen villages and the small town of Heusden, founded in the first half of the 13th century along the river Meuse, midway between two major cities, Dordrecht and 's-Hertogenbosch.

Structural adjustment, liberalisation and the pressures of technological change are having major impact on the institutional organisation of the agro-industrial sector. In industrialised countries, the private sector is positioned to play the vanguard role in the next generation of agricultural technologies. Thus, the ability to promote and sustain new patterns of co-operation in research and development between the private and the public sectors will be a key determinant of future patterns of competitiveness.