Animal type
|
Number of animals raised per place per year
|
Average body weight (kg)
|
Nitrogen produced per year per place (kg N y−1)
|
Housing factor
|
Pasture-to-stable ratio
|
---|
VMP-GLa
|
Chamber of Agriculture NRWb
|
Authors’ suggestion for updated values
|
---|
Calf (0–6 months)
|
2
|
150
|
10
|
22
|
16
|
1
|
< 1
|
Dairy cow
|
1
|
550
|
60
|
91
|
75.5
|
0.5
|
< 1
|
Cattle ( > 0.5 y)
|
1
|
300
|
28
|
70
|
49
|
0.5
|
1
|
Weaner pig (to 25 kg)
|
6.9
|
13.2
|
2.25
|
3.8
|
3.0
|
1
|
1
|
Fattening pig (25–125 kg)
|
3
|
65
|
7.5
|
12.2
|
9.9
|
1
|
1
|
Sow (with litter)
|
1
|
280
|
26
|
27.3
|
26.7
|
1
|
1
|
Boar (25–125 kg)
|
1
|
65
|
–
|
22.1c
|
22.1c
|
1
|
1
|
Broiler
|
9
|
1
|
0.23
|
0.39
|
0.3
|
1
|
1
|
Laying hen
|
1
|
1.6
|
0.35
|
0.76
|
0.56
|
1
|
< 1
|
Replacement layer
|
2.6
|
0.8
|
0.24
|
0.27
|
0.26
|
1
|
1
|
Broiler breeder
|
1
|
1.7
|
0.69
| |
0.69
|
1
|
1
|
Turkey
|
2.7
|
6.5
|
0.9
|
1.34
|
1.12
|
1
|
1
|
Duck
|
7
|
1.6
|
0.41
|
0.61
|
0.51
|
1
|
< 1
|
Horse
|
1
|
400
|
35
|
53.6
|
44.3
|
0.5
|
< 1
|
Dairy goat
|
1
|
40
|
–
|
15.2d
|
15.2
|
1
|
< 1
|
Dairy sheep
|
1
|
70e
|
–
|
20.1f
|
20.1
|
1
|
< 1
|
Rabbit
|
8
|
1.4
|
0.352
|
0.7
|
0.53
|
1
|
1
|
- aVMP guideline [22]
- bData were obtained from the Chamber of Agriculture of North Rhine-Westphalia [29] unless indicated otherwise
- cData were taken from [108,109,110,111]
- dData were taken from [112]
- eData were taken from Liesegang et al. 2007 [113]
- fData were obtained from the Chamber of Agriculture of Lower Saxony [114]