First I agree with what everyone has said to a certain point but, i think i really depends on what the total size of the pasture is. Where I live in west central Illinois we arent getting alot of rain these days. Meaning that the plots or pastures aren't growing that well, so if you have a small pasture thecattle could do damage to the plot if it doesnt have a good start because they will work the pasture faster than a larger pasture. But, as far as, what I would use to block the cattle im not sure whatI would do cuz like what others have said deer dont like being shocked and a 2 wire fence won't keep out smaller cattle. But If your like me if i'm gonna do something I want it to work and last. So, if you really want a food plot you might have to spend more than intended. Good Luck.