Volume 1 of this report Trypanotolerant Livestock in West and Central Africa presented the study area and its livestock and a description of trypanotolerant cattle and their productivity. Recommendations and possible locations for further evaluating the production potential and the management and conservation of these livestock breeds were also presented.
Volume 2 presented detailed information on trypanotolerant livestock found in each of the 18 countries of the study area.
Field missions to collect the data presented and analyzed in Volumes 1 and 2 were undertaken between 1977 and 1978. The data presented therefore reflect the situation prevailing in 1975-76 and at the latest in 1977. These data were released almost 10 years after the initial survey, during which time rapid developments have taken place in this sector. A reappraisal of trypanotolerant livestock and an initial assessment of activities carried out by countries and regional and international bodies were therefore deemed necessary.
Recent data on countries published in this volume were collected during an FAO study to evaluate supply and demand in trypanotolerant breeding cattle and to assess the contribution of trypanotolerant cattle to the national economy. The study, entitled Trypanotolerant Cattle and Livestock Development in West and Central Africa (Straw and Hoste, 1987), was based on data collected between April and June 1985.
Additional data were provided by national research institutions in the various countries and the research team of the ILCA-coordinated African Trypanotolerant Livestock Network, in collaboration with the International Laboratory for Research on Animal Diseases (ILRAD).
Information was obtained from questionnaires sent out regularly by FAO to liaison officers working with the Programme for the Control of African Animal Trypanosomiasis and Related Development in relevant zones. This volume therefore presents major results obtained since the publication of Volumes 1 and 2 and updates national data on trypanotolerant cattle.
Part 1 of this present Volume 3 analyses populations and their trends between the two surveys (Chapter 1) and reviews research activities (Chapter 2) and development activities (Chapter 3). It also gives recent information available on the potential and utilization of trypanotolerant livestock, which accounts for its title.
Part 2 presents recent data for the 18 study countries, as well as for Equatorial Guinea which was not covered in Volume 2. This information should be studied in conjunction with Volume 2 for an overall and updated view of trypanotolerant livestock production in each country. Countries are discussed in the same order in both volumes.
An additional section on major developments occurring during the study period has been included at the end of each country study.
A selected bibliography for each country is included at the end of each country study. A general list of references for Parts 1 and 2 appears at the end of the document. The main comments and analyses are summarized in the conclusion.
