Chicken feces makes decent fertilizer. Have to monitor the soil's pH though.
This is only the tip of the iceberg on Factory farms. To put it mildly they should just be outlawed. They are contaminating aqifers and water wells all over the country. The stench burns your eyes and creates breathing problems as well. In northern NY recently a wall to a pond of waiste gave way and dumped millions of gallons of the stuff into a major river. This not only contaminated the river, but killed scores of fish. It is a bad design created by Cornell. The time for its end has come.