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We describe a method of fitting a model of germplasm distribution to climate data and illustrate it`s use in mapping the continental distribution of five Stylosanthes species. The climate data used are the monthly totals of rainfall and the monthly mean temperatures and diurnal temperature ranges...
Different aspects on the history, screening, and domestication effect on the evolution of the bean species are discussed, based on the concept of species domestication. Data are examined on plant systematics and geography, etnological botany, biochemistry, arqueology, and genetics of the crop. Th...
This overview aims at browsing the scene of action for research on the resistance of small ruminant to endoparasites in sub-Saharan Africa. After recalling the main sheep and goat breeds, it describes the geographic distribution of these populations in the continent, mentions the farming systems ...
Over the last two to three decades, West Africa has witnessed considerable changes in land use. Unprecedented increases in human population combined with changes in climatic patterns have reduced per capita arable land traditionally available for agricultural production. In the livestock sub-sect...
Specific humoral and cell mediated immunity to blood parasites is reviewed. There is a table detailing the worldwide occurrence of economically important blood parasitic diseases followed by summaries of immunological aspects of trypanosomosis, theileriosis, babesiosis, anaplasmosis, cowdriosis a...
The indigenous breeds of cattle endangered in Africa are identified. Topical dicussions on main reasons for being endangered, their geographical distribution and numbers, their major contribution to economy and the specific traits justifying conservation programmes for the breeds included.
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