Subject to change, clarification of times and topics.
Tavs Nyord, Chief Specialist, SEGES Innovation: “The climate tax on animal husbandry in Denmark (2030)”
Session chair: Anders Feilberg
In 2030, Denmark will introduce a climate tax on cattle and pig production. This presentation outlines the policy rationale, tax design, and state initiatives promoting greenhouse‑gas‑reducing measures. It also covers cooperation on inclusion of mitigation actions in national inventories, collecting activity data, and coordinating with tax authorities.
Keywords/Questions to be addressed:
Climate tax
GHG reducing measures
Collaboration between research, industry, and central government administration
Session chair: Thomas Kupper
Session chair: David Janke
Session chair: Li Rong
Jan Nørgaard, Professor, Department of Animal and Veterinary Sciences, Aarhus University: “Inside‑Out sustainability: Nutritional strategies to reduce methane and nutrient emissions in pig production”
Session chair: Sabine Schrade
Sustainable pig production begins inside the animal. By optimizing nutrition, we can significantly reduce enteric methane emissions as well as nitrogen and phosphorus excretion. Our research shows that targeted feeding strategies - such as lowering crude protein, improving amino acid supply, and using novel feed ingredients and additives - enhance nutrient utilization while reducing emissions. Nutrition and feed ingredient choices also interact with animal productivity, health, and welfare. Diets based on low carbon‑footprint ingredients often contain high fiber levels, which can increase methane emissions from pigs and slurry. By focusing on the pig’s nutritional requirements as the starting point, we can influence the entire emission chain - from gut processes to manure storage - and contribute to climate‑smart pig production.
Keywords/Questions to be addressed:
Nutrition, health, productivity and welfare interactions with climate and environment
Quantification of enteric methane emissions and N and P excretions in pigs
How do feeding strategies, ingredients and additives alter emissions?
How do low‑C ingredients affect methane?
How can nutrition shift the full emission chain?
Session chair: Herald Wilson Ambrose
Since several decades, research teams have been working on developing measurement methods specific to emission sources to improve understanding of emission processes and generate values for inventories and mitigation potential. Gradually, additional measurement targets have emerged, which has required adapting existing methods or even developing new ones. The aim of this workshop is to provide a rapid overview of the relevant measurement methods and protocols currently available that can address the various measurement targets, and to discuss possible improvements to these methods as well as upcoming challenges. The workshop will primarily address housing emissions.
Session chair: Cecile de Klein
Shutong Dong, Emissions & Manure Valorisation Department, Wageningen Livestock Research, Netherlands: “Modelling CO₂ Production of Fast- and Slow-growing Broilers and Quantifying Litter Contribution”
Session chair: Johanna Pedersen
Johannes Laubach, Senior Researcher, Bioeconomy Science Institute, Manaaki Whenua – Landcare Research Group: “Micrometeorological measurement methods and emission quantification from grazing livestock systems”
Session chair: Alex Valach
This keynote will provide an overview of current methodologies used to quantify greenhouse gas emissions from grazing livestock systems. The presentation will include micrometeorological approaches highlighting the strengths, limitations, and applicability under field conditions. Emphasis will be on methane emissions from enteric fermentation and nitrous oxide emissions from excreta patches. The talk will discuss methodological challenges related to spatial variability, temporal dynamics, and upscaling from plot to farm and regional scales, and will outline implications for emission inventories and mitigation assessment.
Keywords/Questions to be addressed:
How can methane emissions from grazing livestock be robustly quantified under field conditions?
What are the advantages and limitations of micrometeorological versus chamber-based approaches?
How can measurement data improve emission factors and national inventories?
Session chair: Marcel Bühler
Session chair: Hendrik Jan van Dooren
Session chair: Christian Friis Børsting
Session chair: Charlotte Scheutz
Dominik Wisser, Livestock Policy Officer at the Food and Agricultural Organization of the United Nations: “Pathways to Sustainable Animal Protein: Can We Feed the World While Mitigating Climate Change?”
Session chair: Sasha Hafner
It is estimated that the demand for animal protein will increase by about 20 percent by 2050 globally, mostly driven by population growth in low- and middle-income countries. Under a business-as-usual scenario, this will lead to a further increase in greenhouse gas emissions from the livestock sector. The talk will explore pathways to lower emissions for the sector and explore possible interventions in different regions and contexts.
Keywords/Questions to be addressed:
Global Livestock Environmental Assessment Model (GLEAM)
Livestock Greenhouse gas emissions
Food security
Animal protein
The Manure Management Network (MMN) is part of the Global Research Alliance – at this session the participants will discuss and priorities ideas for developing or disseminating technologies and management practices reducing GHG emission from agriculture.
Session chair: Paul Robin
Session chair: Sebastian Wulf
Frederik Rask Dalby, Assistant professor, Modelling and emission processes, Department of Biological and Chemical Engineering, Aarhus University: “Improving tools for modelling methane from manure”
Session chair: Paria Sefeedpari
Methane emissions from manure are not random losses—they are the outcome of dynamic microbial ecosystems operating under shifting environmental constraints. As mitigation strategies increasingly target microbial activity, our modelling tools must evolve accordingly. This keynote argues for a paradigm shift: from empirical emission factors to more process-informed models that explicitly represent microbial capacity and system dynamics across the manure management chain. A model based on experiments studying degradation kinetics, emission dynamics, methanogenic activity, and mitigation technologies will be presented. It will be demonstrated how it can be used for farm-scale estimation, scaling of storage systems, integration with other models and emission inventories and challenges related to model complexity.
Keywords/Questions to be addressed:
What processes should be included in a process model to reflect methane production at farm-scale?
How does manure management interact with a model with microbial activity and what are the chain effects does it predict?
Which mitigation technologies can be modelled and can we infer from modelling, which technologies to use?
Session chair: Elio Dinuccio
Session chair: Lise Bonne Guldberg
Session chair: Peter Kai
Session chair: Mélynda Hassouna
