Stockpiled Manure or Litter; is in this report, wood fibre bedding that has fecal matter in it. Based on / per ton averages:
Animal Nitrogen Ammonia Phosphorus Potassium
Chicken 36 8 60 34
Duck 24 5 42 22
Horse 10 4 6 9
Each of these these three animals used a massive amount of wood shavings / sawdust to be bedded on while in-doors.
What does this actually mean?
Stockpiled means feces in wood fibre shavings after cleared from barn or stall. Manure should mean fecal matter only. However manure, is usually referred to as the whole mix of bedding and fecal matter that is cleared from a barn or stall. (Dairy manure is very wet and liquified but can be strained of water and dried, and is not addressed the same as poultry or equine.)
With so many chicks per square foot, and the high feed content to create a salable bird within 6-8 weeks of birth, the amount of fecal matter is high within the bedding, and very high in nitrogen. Even when mixed within the waste wood fibre sawdust, it can be used as a strong compost material to make a soil amendment – while spreading on fields will allow nutrient regrowth of soil. The wood fibre will not breakdown well due to the course lignum in wood. Best option to stripe the Manure of bedding and liquify in an AD or add Urea and other food waste products with chicken manure to compost and breakdown to a usable solution for field / crop spreading.
With less ducks per square foot on barned bedding, ducks leave more wood fibre in the “manure.” With lower nutrient values it can be used as a filler with urea and other waste products like fruit pulp or coffee grinds to make a good soil amendment or left to compost and spread as manure on fields. Spreading on fields without composting will likely not allow for good nutrient regrowth. A possible mix of horse and duck used bedding could be used to create a high BTU quality fuel pellet. It could also be used to spread around berry fields for root protection.
Horse Manure / or better called Used Bedding.…..
This undesirable waste stream has low fecal matter and high wood fibre content and should be called “used horse bedding” not a “manure” when stockpiled. With little nutrient value, it needs to be composted in conjunction with other additives to create a soil amendment – while spreading on fields will deplete nutrients and be unhealthy for the soil. This is due to the fact that most horse bedding is a mix of large wood shavings and some sawdust, where generally only smaller sawdust particles are used as the bedding of choice for Poultry and Duck.
It would be best to strip the fecal matter from the used wood fibre and spread on rose gardens as a soil amendment (the fecal matter is live, and roses like lower levels of nitrogen.) Horse manure / horse used bedding is not good to be stockpiled as it easily leaches and off-gasses when wet. If buried in landfill, the lignum in the wood does not break down in an acceptable time-frame.
The best option, is to recycle the whole wastestream into a reusable animal bedding through companies like GreenScene Agritek
“All manures are not created equal” whitepaper – Paul Cross
North Carolina Department of Agriculture’s Agronomic Division
J. P. Zublena, Extension Soil Science Specialist
Penn State College of Agricultural services