In the semi-arid and dry sub-humid savannas of West Africa, including Nigeria, numerous species of herbaceous dicots especially from the genera ''Crotalaria'', ''Alysicarpus'', ''Cassia'' and ''Ipomea'' are known to be widely used in livestock production. Quite often they are plucked or cut and fed either as fresh or conserved fodders. The utilization of these and many other herbs growing naturally within the farm environment is opportunistic.