Deep Litter is NOT "composting"
It only works if it's fairly dry, and actual composting only works when it's kept moist
Deep Litter will NOT work as it should if you clean it out instead of just adding more wood shavings
Deep Litter is a biological bedding system
"Composting" is a chemical and biological decomposition process
I beg to differ on that first and last line. It is composting and the moisture lies in the bottom levels of this bedding, with the top layers staying fairly dry. If you don't disturb this bedding too much, the moisture is retained in the lower levels and is indeed composting the materials there. There is a change in the carbonaceous materials present in the litter, as well as the nitrogenous materials as they bind with one another. My litter literally disappears into the soil floor of my coop as it composts down into a soil medium. I never have to remove litter to avoid a deep litter pack...it just dissipates into the soil all on its own and I would consider that a very efficient composting.
You really cannot have a biological bedding system without some chemical processes going on as well...all things are decomposing, albeit at different rates, but the moisture from the feces, from the air, from the byproduct of these biological metabolisms all are present depending upon the relative humidity in the air, the matter being used and the amount of feces being deposited...and time. Just time.
Don't turn it and see how well it does. I used to turn mine too, thinking I needed to get the moist areas underneath to the air and let them dry out, but you'll need that moisture for it to break down. I found that leaving it alone was the best thing to do...I occasionally fork some bedding lightly over feces deposited under the roosts but that's the extent of my bothering with the bedding now. The chickens will rearrange it now and again, but mostly, they do not...this leaves the top layers dry and good footing and the bottom layers with just the right level of moisture except for very dry periods in the summer months..but I still leave it alone then too.THis begs for more information . . . now I am confused, but in a good way: need more information. My understand was that it is supposed to compost at the lower levels. But I didn not see that happeneding with my bedding, so I figured I don't have the mix right , but I keep trying: adding more shavings and dried leaves and keep it turned. I'm clearly missing something.
Just try adding layers without stirring the layers and see how that goes. Lightly bury the feces now and again so the bugs can get to them without exposure and you'll be surprised how well it does.
I agree and it's a good method to bring in some soil to add some good cultures to the mix.Here's an excellent article on deep litter that I found very informative. http://www.grit.com/animals/chicken-health-deep-litter-zm0z13jazgou.aspx?PageId=1#axzz2jxxtoX1W
While not composting in the respect that you're adding kitchen refuse, etc., deep litter does break down. I push that process a bit by adding leaves that were shredded by our mulching lawnmower and - most importantly - by inoculating my coop litter with dirt obtained from the forest floor. The little critters and microbes that eat leaf litter and woodland debri live in that dirt and really help break down the litter in the coop.
My coop is 8 x 10. To start my litter this fall [it is a newly built coop so this was my first season doing deep litter in it] I added a deep layer of pine shavings combined with mulched leaves. We then added a full wheelbarrow of dirt obtained from our woods, sprinkling it on the top. Oh, my, the girls had a field-day! They mixed it up really well and - six weeks later - you can see that the bottom layer is breaking up nicely. And there's no smell in the coop, even first thing in the morning when first opening it up.
As my DH said, seemed rather odd bringing dirt IN insteading of taking it OUT but - hey - it works for us!