Discusses potential impacts of ILCA's subhumid zone programme in Nigeria in terms of the direct benefits accruing to producers from adopting its intervention packages and indirect spinoffs from a better basis for research & development strategies in the livestock sector arising from a better understanding of complex sociological cultural, economic, ecological, agronomic & livestock management interactions constituting the livestock production system gleaned from livestock system research. Suggests 9 priority items for future research with an emphasis on component research & intervention testing