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Calculation of Animal Units (AU)

This page can be used to calculate of animal units and animal density for a farm. Calculation method is developed by dr.S.Sileika sigitas@water.omnitel.net and dr.G.Vaicionis vaicioni@crosswinds.net 

Attention: Do not input decimals, you can get wrong results ! Follow described units.

 

Animals Type of barn and animal housing. Type of manure removal and storage Quantity this year kg/ha
Sow with 18 piglets under 20 kg In shallow pigsty With transporter or other way
Fatling pigs On slatted floor Washing with water or self-passing flow
In shallow pigsty Transporter or other way
In deep pigsty Stored in pigsty
Cows of milk productivity of 3000 kg Tied housing Transporter
Loose housing in boxes Washing away with water
In deep barn Stored in barn
Cows of milk productivity of 5000 kg Tied housing Transporter
Loose housing in boxes Washing away with water
In deep barn Stored in barn
Cows of milk productivity of 7000 kg Tied housing Transporter
Loose housing in boxes Washing away with water
In deep barn Stored in barn
Calves under 6 months old: In deep barn Transporter
From 4 months on slatted floors Washing away with water
Tied housing Transporter or other way
Heifers from 6 to 24 months old In deep barn Stored in barn
On slatted floors Washing away with water
Tied housing Transporter
Fatling cattle In deep barn Stored in barn
On slatted floors Washing away with water
Tied housing Transporter
Beef cow with calf In deep barn Stored in barn
Horses  In stalls Various way of manure removal
Sheep On shallow or deep barn Various way of manure removal
Hens On deep litter Stored in barn
In coops without litter Transporter or other way
Chicken broilers On deep litter Stored in barn during feeding cycle
In coops without litter Transporter or other way
Ducks, geese, turkeys On deep litter Stored in barn

Fertilized land area  ha:

Calculation results

Copyright © 2001 [Lithuanian Institute of Water Management]. All rights reserved.
Revised: kovo 06, 2002

BAAP regional network. webmin@baap.lt Page updated 2002.03.06