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< prev - next > Energy Biogas Biogas Digest Vol 2 (Printable PDF)
Annual Manure Yield and Nutrient Content of Animal
Excrements
Table 5: Annual manure yield and nutrient content of cow, pig and chicken
excrements; compiled from various sources
Total annual yield [kg/LSU/a] and percentage shares
Cow
Pig
Chicken (fresh droppings)
Chicken (dry droppings)
Total
Wt.
TS
kg/a kg/a [%]
16,100 1850 11.6
13,500 1130 8.4
18,250 4020 22.0
4,230 3390 80
VS
kg/a
1400
900
3170
2560
[%]
8.7
6.7
17.4
60
N
kg/a
77
102
232
146
[%]
0.5
0.8
1.3
3.5
Total annual yield [kg/LSU/a] and percentage shares
P2O5
kg/a
[%]
K2O
kg/a
[%]
Nutritive ratio
(P2O5 = 1)
N P2O5 K2O
Cow
34
0.2 84
0.5
2.3 1
2.5
Pig
56
0.4 35
0.3
1.8 1
0.6
Chicken (fresh droppings) 194
1.0
108 0.6
1.2 1
0.6
Chicken (dry droppings) 193
4.6
106 2.5
0.8 1
0.6
Source: Production and Utilization of Biogas in Rural Areas of Industrialized and Developing
Countries, Schriftenreihe der gtz, No. 97, pp. 71-72; after: Rager, K. Th.:
Abwassertechnische und wasserwirtschaftliche Probleme der Massentierhaltung; Darmstadt,
FRG, 1971, p. 38
LSU = livestock unit (= 500 kg live weight)
TS = Total solids
VS = Volatile solids
71