I have already commented on Alan Savory's work:
I suggest that we let the wild animals thrive and live free again without us killing them and destroying their environment, and let them graze the lands again. A vegan world where we stop killing all wild animals, let the forests grow back again, let the wild animals graze the lands, and let the humans only eat plants.
If we care about what is "good for the animals", we can't take their precious life. Their purpose is not to become our "food". He is trying to "mimic nature". No, lets restore nature again. Let all animals be free again, instead of being our slaves.
I highly recommend this article: http://www.onegreenplanet.org/animalsandnature/what-are-the-roots-of-freedom-and-slavery/ , the book World Peace Diet by Will Tuttle (http://www.worldpeacediet.org/)
Longer comment here: http://bloganders.blogspot.no/2013/04/why-allan-savory-environmental-approach.html
There are many thriving veganic gardens, food forests, etc. I believe in small scale planting without monocroping and without any big fossile fuel driven machines killing many animals in the process.