Many research and development institutions advocate the integration of economic sectors to markets to benefit from them and reduce poverty. This is not so simple for Sahelian pastoralists living in uncertainty and absence of contingent markets. Sahelian pastoralists use livestock markets but these markets don't systematically influence their production and marketing decisions. Based on the case of Senegalese Sahel, we use a spatial panel model to estimate the magnitude impacts of spatial and time factors on pastoral income generation. Then, we extent discussions to show that Sahelian livestock keepers alternate homo oeconomicus and bounded behaviours vis-à-vis the markets that they know well even if markets don't know much about them-and that is one reason it can be hard for a real structural transition. The problems of pastoral marketing systems are still examined from the perspectives of infrastructure buildings while it is also necessary to reduce transaction costs and information asymmetry to boost livestock marketing.