Photo from By George Farm blogThe By George Farm blog has a post about their pigs eating kitchen waste. The pigs will wind up getting eaten at The Madison Club, a prestigious club in Madison, Wisconsin.
Even if you feed pigs that way, as long as you withhold the slop at the end of their lives, it is possible to produce great meat and and fat.
This way of feeding pigs is traditional, and a lot like what people were doing in Egypt until quite recently. To quote Harris:
Although it can be efficient to feed pigs this way, some people get squeamish about it. They'd be happier if the pigs ate feed out of a can.