Interesting website from the USDA about Silvopasture, I’ve got some reading ahead of me.
http://www.unl.edu/nac/silvopasture.htm
Silvopasture combines trees with forage and livestock production. The trees are managed for high-value sawlogs and, at the same time, provide shade and shelter for livestock and forage, reducing stress and sometimes increasing forage production. In plantations of conifers or hardwoods for timber or Christmas trees, managed grazing provides added products and income. Some nut and fruit orchards may also be grazed.