I visited a feedlot in northern NSW a few weeks ago. They had a heap of Wagyu, Wagyu/Holstein and Wagyu/Angus. The amount of fat sitting on these animals was staggering, and they still had about 30 to 40 days to go. They just seem to lay it down so easily. Interestingly, the manager of the feedlot - which only feeds black cattle - said they prefer the Wagyu's to Angus because they don't have the health issues which the Angus seem to be really susceptible too. They keep the Wagyus in the pens furthest away because they are less likely to have to bring any of them in for treatment, or to the sick pen. I found this really interesting because looking at some of the animals, you wouldn't think they were terribly sound!