There is not a straw industry in our area. Rice is harvested manually and is carried to the side of the road and put through a portable machine that separates the grain. The stalks are generally burnt. These have great potential as mulch and now I have a manager that's a certified horticulturist, I look forward to discussing trying to get a trailer load to use as mulch.
The rice is then normally dried on the side of the road. Once its dried, its carried to a mill to dehusk.
There is no demand for the rice husks so we get them for free. We drop a guy with 40 feed sacks at rice husk mountain and open face mine it.
2 hours later we return to pick up the bagged rice husks.
Our alternative would be sand which I personally don't like. The rice husks are placed in the coops at a thickness of 2" and we replace them every 6-8 weeks depending on need. We replace them weekly in the Brooders as it's more crowded.
We collect all pig poop in a bucket and put it in a compost bay then cover it with an inch of chicken litter.
It takes 2 months in our hot humid climate to convert to usable compost.