With improvements in animal health, feed efficiency, and all of these things, we can produce in two years what used to take three to four years. That means they are drinking less, producing less manure, and eating less. We have more efficient animals.
That's a mixture of everything from animal health and treatment to the feeds we provide them to management practices. It's all of those factors. We have made substantial improvements in productivity, but we know that with limited resources we need to continue moving down that road.