Handling When Raising Pigs - Provides an Effective, Low-Cost
Source of Nutrients
Manure from pig
operations provides an effective, low-cost source of nutrients for
crops and pastures. However,
manure handling can present a challenge on pig operations.
Depending on the situation, manure can be handled as either a solid
or a liquid on the farm. Most small operations handle manure as
solids, spreading the manure throughout the year using conventional
manure handling equipment such as shovels, tractor-mounted loaders,
skid loaders, and manure spreaders.
Manure consistency varies according to the age of the animals, the
type of feeds provided, and the type of bedding used in the
operation. Confinement operations concentrate the manure, while
manure in pasture operations tends to be less concentrated. Many
larger pig operations handle the manure in the liquid form, which
calls for different types of equipment and structures for collecting
and spreading the nutrients on fields.
Pig manure is a valuable by-product that can be used to enhance
field crop production. Here are some useful facts regarding
production rates and nutrient contents of pig manure:
- A 150-pound pig produces 9.5 pounds of solid waste per day, or 1.7
tons of manure per year.
- A 150-pound pig produces 1.2 gallons of liquid waste per day, or
440 gallons per year.
- Solid manure contains 7 pounds of nitrogen, 6 pounds of
phosphorus, and 7 pounds of potassium per ton.
- Liquid manure contains 17 pounds of nitrogen, 10 pounds of
phosphorus, and 16 pounds of potassium per 1000 gallons
- Pig operations with 100 animals on hand year-round produce 170
tons of solid manure, or 44,000 gallons of liquid manure annually.
This manure would supply nutrients for approximately 10 acres of
field corn on an annual basis and would require little additional
purchased commercial fertilizer to meet crop needs.