| Autor: |
Qile Hu, Huangwei Shi, Li Wang, Lu Wang, Yong Hou, Hongliang Wang, Changhua Lai, Shuai Zhang |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
The Science of the total environment. 856(Pt 1) |
| ISSN: |
1879-1026 |
| Popis: |
As the world's largest pork producer, China is facing substantial environmental pressures caused by pig production and the relevant feed production. The net energy (NE) system is promoted as a new evaluation method to evaluate energy content in feed and energy requirements of pigs, but its application lacks of comprehensive and comparative evaluation from the environmental perspective. To identify influence factors and to develop mitigation strategies, the carbon and nitrogen footprints and land use (LU) of pigs (25-120 kg) in China were explored through scenario analysis and cradle-to-farm gate life cycle assessment (LCA). Functional unit (FU) was defined as 1 kg of live weight increase in pig. Among all the procedures of pig production, feed crop production and manure management were the principal contributors to the greenhouse gas (GHG) and nitrogen emissions. As for the carbon footprint, the GHG emissions ranged from 2.37 to 2.55 kg CO |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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