Mulberry: the king of tree fruits (for pigs)

Here are some photos of my “Black Beauty” from Willis Orchards. It was planted in April 2014, so this is its second leaf. You can’t tell from the photos, but it is 8 feet tall and very bushy. I topped it several times because I was trying to turn it into more of a bush than a tree- not sure if that was wise or not. In the photo I took to show you the bark, you can also see one thing that worries me about my tree- will it end up splitting at this fork one day? Anyway, please take a look and let me know what you think I have. Thanks.
kevin