How to raise pigs to make money?

You can configure your own feed, which can save a lot of pig raising costs. For example, what leftovers are there at home, as well as corn stalks, peanut seedlings, bean dregs and the like, which can comprehensively utilize chicken manure. You can use them to feed pigs with fermented feed, and the effect is quite good. Moreover, you can also give pigs a comprehensive EM bacteria solution, so that a pig can use dozens of dollars less.