Abstract: A device for and method of injecting a bale of ruminant material with a fluid is taught. The device includes a plurality of injection spikes for insertion into the bale. The spikes are attached to a support for supporting the spikes while they are inserted into the bale. The spikes are attached to the support by a resilient member. The device prevents the deformation of the spikes and thereby increases the useable life of the device over devices in which the spikes are rigidly mounted on a driving structure. The device further has injection drive which allows precise control over the amount of fluid being injected into the bale.