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Annual Manure Yield and Nutrient Content of Animal Excrements
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Revision as of 11:41, 13 October 2014 by ***** (***** | *****)
Overview
Livestock farms can considerably improve their greenhouse gas balance by using animal excrements for biogas production. The greenhouse gas methane emitted by manure and slurry is now used to produce energy and no longer emitted into the air. Moreover, energy generation leads to extra revenue without reducing the dung’s fertilising abilities.[1]
Total Annual Yield
| Total annual yield [kg/LSU/a] and percentage shares | |||||||
|---|---|---|---|---|---|---|---|
| Total Wt. | TS | VS | N | ||||
| kg/a | kg/a | [%] | kg/a | [%] | kg/a | [%] | |
| Cow | 16,100 | 1850 | 11.6 | 1400 | 8.7 | 77 | 0.5 |
| Pig | 13,500 | 1130 | 8.4 | 900 | 6.7 | 102 | 0.8 |
| Chicken (fresh droppings) | 18,250 | 4020 | 22.0 | 3170 | 17.4 | 232 | 1.3 |
| Chicken (dry droppings) | 4,230 | 3390 | 80 | 2560 | 60 | 146 | 3.5 |
| Total annual yield [kg/LSU/a] and percentage shares | Nutritive ratio (P2O5 = 1) | ||||||
|---|---|---|---|---|---|---|---|
| P2O5 | K2O | N | P2O5 | K2O | |||
| kg/a | [%] | kg/a | [%] | ||||
| 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 |
Table B4: Annual manure yield and nutrient content of cow, pig and chicken excrements; compiled from various sources[2]
Abbreviations
LSU = livestock unit (= 500 kg live weight)
TS = Total solids
VS = Volatile solids
Further Information
- Biogas Portal on energypedia
- SUSTAINGAS: Sustainable biogas production, A handbook for organic farmers
References
- ↑ SUSTAINGAS: http://www.sustaingas.eu/fileadmin/sustaingas/documents/handbook/SUSTAINGAS_handbook_EN.pdf
- ↑ 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
