The following is an example of an AEU per acre calculation
Example farm data
Animal inventory: 110 dairy cows @ 1,300 lb average weight each
35 heifers @ 900 Ih average weight each
20 calves @ 375 lb average weight each
15,000 heavy broilers @ 3 lb average weight each
Cows = 365 day per year
Production period
Land inventory:
Using this example data and the worksheet, the calculation of animal density (ALUs pei acic) foi this lam:
j Animal type
No. animals
nd>
Vcmry
90
Colvet
\ o}&ilef4
I0M&
iland and pastures
•Includes only cropl
nutrients than can be fully used by the crops grown on the
farm. Thus, nutrient management plans often will describe
on-farm manure utilization, and procedures for moving
some manure off the farm.
Other Required Plans
Farms receiving financial assistance for nutrient manage
ment, such as from the Chesapeake Bay Program, will be re
quired to have a nutrient management plan. Any farm that
violates the Clean Streams Law also may be required to de
velop a nutrient management plan.
Farms with fewer than two AEUs per acre are encour
aged to voluntarily develop nutrient management plans.
Nutrient management plans, whether required or voluntary,
can improve farm profits, help protect the environment,
provide some protection from liability, and enhance the
image with the general public of agriculture as a good stew
ard of our natural resources.
For More Information
For more information, contact your local Penn State Co
operative Extension office or your local Conservation Dis
trict. For a summary of the Nutrient Management Act and
Broilers = 5 Hocks (or 57 days each, or 285 days pei year
Farmstead = 5 acres
Woodland = 3 acres
Pasture = 4 acres
Ciopland, home faun = 60 acres
Ciopland, icnled farm = 36 acres
x animal weight (lb)
x / 9i'/P
x c f£d'
*9lO
x 9
Voluntary Plans
EXAMPLE CAO CALCULATIONS
(Continued from Pago 5)
x prod, days
x 5b I .’
x 5l?0
x *>bo
x -2ito
Acres available for manure*
AEUs/acre
regulations, see Penn State Agronomy Facts 40,
Management Legislation and Regulations in Pern
A Summary, which is available from your local F
Cooperative Extension office.
Table 1. Standard animal weights used to calculi
animal equivalent units to identify concentrated
operations.
Type of animal
Swine
Nursery pig
Finishing pig
Gestatmg sow
Sow and litter
Boar
- factor =
- 365,000 =
- 365,000 =
- 365,000 =
- 365,000 =
- 365,000 =
- 365,000 =
- 365,000 =
Total =
(Turn to Page 7)
would be
AEU
16-5 d>
5! 0
7 0
50 !&■
vt7 !&■
= ? 17
Standard weight i
during productioi
30(15-45)
145 (45-245)
400
470
450