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  • Dr Aimable UWIZEYE

A great achievement


My PhD thesis defended on 17th May 2019 at Wageningen University and Research in the Netherlands, focused on Nutrient challenges in global livestock supply chains. Here is a short summary.


Global livestock supply chains are transforming in response to the increasing demand for animal-source food and have affected nitrogen use and emissions, with repercussions on environmental and public health. A framework of indicators was developed to estimate the magnitude of nitrogen use and emissions in global livestock supply chains. Results show that the livestock is responsible for substantial nitrogen emissions, which are concentrated in two regions. There are large variabilities of nitrogen use indicators across species and systems, indicating that best practices are available to support mitigation options. For instance, feeding swill to industrial pigs can improve nitrogen use efficiency and abate emissions. Designing Improvement interventions should consider potential trade-offs and synergies with other sustainability dimensions, such as climate change, resource scarcity, public health and food security. Nitrogen challenges are global and cannot be tackled without considering the contribution of the livestock sector.


Here are the links to some chapters:


Chapter 1. General Introduction


Chapter 2. Nutrient use efficiency: a valuable approach to benchmark the sustainability of nutrient use in global livestock production?


Chapter 3. A comprehensive framework to assess the sustainability of nutrient use in global livestock supply chains


Chapter 4. Selective improvement of global datasets for the computation of locally relevant environmental indicators: A method based on global sensitivity analysis.


Chapter 5. Nitrogen flows in global pork supply chains and potential improvement from feeding swill to pigs.


Chapter 6. A disaggregated assessment of nitrogen use and emissions in global livestock supply chains


Chapter 7. General discussion


For more information, click here.




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