Low-opportunity-cost feed can reduce land-use-related environmental impacts by about one-third in China.

Autor: Fang Q; College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, State Key Laboratory of Nutrient Use and Management, China Agricultural University, Beijing, PR China., Zhang X; College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, State Key Laboratory of Nutrient Use and Management, China Agricultural University, Beijing, PR China., Dai G; College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, State Key Laboratory of Nutrient Use and Management, China Agricultural University, Beijing, PR China., Tong B; College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, State Key Laboratory of Nutrient Use and Management, China Agricultural University, Beijing, PR China., Wang H; College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, State Key Laboratory of Nutrient Use and Management, China Agricultural University, Beijing, PR China., Oenema O; College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, State Key Laboratory of Nutrient Use and Management, China Agricultural University, Beijing, PR China.; Wageningen Environmental Research, Wageningen University & Research, Wageningen, the Netherlands., van Zanten HHE; Farming Systems Ecology group, Wageningen University & Research, Wageningen, the Netherlands., Gerber P; Animal Production Systems group, Wageningen University & Research, Wageningen, the Netherlands.; The World Bank Group, Agriculture and Food Global Practice, Washington, DC, USA., Hou Y; College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, State Key Laboratory of Nutrient Use and Management, China Agricultural University, Beijing, PR China. houyong7514364@126.com.
Jazyk: angličtina
Zdroj: Nature food [Nat Food] 2023 Aug; Vol. 4 (8), pp. 677-685. Date of Electronic Publication: 2023 Jul 31.
DOI: 10.1038/s43016-023-00813-x
Abstrakt: Feeding animals more low-opportunity-cost feed products (LCFs), such as food waste and by-products, may decrease food-feed competition for cropland. Using a feed allocation optimization model that considers the availability of feed sources and animal requirements for protein and energy, we explored the perspectives of feeding more LCFs to animals in China. We found that about one-third of the animal feed consisted of human-edible products, while only 23% of the available LCFs were used as feed during 2009-2013. An increased utilization of LCFs (45-90 Mt) could potentially save 25-32% of feed-producing cropland area without impairing livestock productivity. Parallelly, about one-third of feed-related irrigation water, synthetic fertilizer and greenhouse gas emissions would be saved. Re-allocating the saved cropland could sustain the food energy demand of 30-185 million people. Achieving the potentials of increased LCF use requires improved technology and coordination among stakeholders.
(© 2023. The Author(s), under exclusive licence to Springer Nature Limited.)
Databáze: MEDLINE
Externí odkaz: