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Animal production intensification puts pressure on resources, leads to environmental impacts, animal welfare and biodiversity issues. Livestock products provide key components of the human diet and contribute to rural territories through ecosystem services such as nutrient and biomass recycling. Life cycle assessment (LCA) is key to assess environmental impacts in livestock systems and products. A harmonization of LCA methods is necessary to improve evaluations in these areas as LCA still lacks accuracy and robustness in addressing sustainability across livestock systems and products. Here, a participatory harmonization approach was applied to provide a framework to evaluate LCAs of current and future livestock systems. A total of 29 workshops with targeted discussions among 21 LCA experts were organised, together with two anonymous surveys to harmonise evaluation criteria. First, key research topics for improving LCAs of livestock systems were identified as follows: i) Food, feed, fuel and biomaterial competition, crop-livestock interaction and the circular economy; ii) Biodiversity; iii) Animal welfare; iv) Nutrition; v) GHG emissions. Next, general evaluation criteria were identified for livestock focussed LCA methods, considering livestock systems characteristics: Transparency and Reproducibility, Completeness, Fairness and Acceptance, Robustness and Accuracy. Evaluation criteria specific to each key topic were also identified. This participatory method was successful in narrowing down general and specific evaluation criteria through targeted discussion. Moreover, this study provided a holistic participatory framework for the evaluation of LCA methods addressing the impacts of livestock systems across a range of key topics which can be further used for other sectors.

Climate change is primarily caused by greenhouse gas (GHG) emissions that result in warming of the atmosphere. Around 15% of all global GHG emissions are attributed to livestock production. Here, we present an overview of the Horizon Europe project Re-Livestock – Facilitating innovations for resilient livestock farming systems. Re-Livestock is a five-year project (2022-2027) with the overall objective to increase the resilience of the livestock sector. This will be achieved by understanding and mobilizing adoption of innovative practices, which are applied cross-scale on animal, herd and farm, sector and region levels, to reduce GHG emissions of livestock farming and adaptation to climate change effects, mainly heat stress. Re-Livestock proposes a holistic approach based on the Re-Concept: Re-Evaluation of feeding inputs and nutrient cycling, Re-Exploring animals’ adaptive capacity to integrate mitigation and adaptation and Re-Design of livestock systems. Specifically, Re-Livestock will evaluate low carbon footprint feed materials, the role of grasslands in low carbon livestock production and the use of feed supplements to suppress enteric methane. Animal breeding has been shown to be a permanent, cumulative and cost-effective GHG mitigation strategy In Re-Livestock we will demonstrate the potential of animal breeding in climate change mitigation and design breeding strategies that reduce GHG emission. We will collaborate across countries and examine if individual methane emission of cattle recorded with different devices and in different countries is genetically the same or different traits. We will further investigate the usefulness of the rumen microbiome as predictor of individual methane emission in cattle across countries and develop novel models to determine the genetic architecture of methane emission in cattle. System specific on-farm level husbandry practices to reduce GHG emission will be evaluated by re-defining housing and management strategies, promoti

CONTEXT Agroforestry is gaining interest in in Europe however the trade-offs associated with its uptake are still uncertain. OBJECTIVE The objective of this study was to explore the sustainability trade-offs and synergies associated with a range of agroforestry systems in Europe and assess the underlying reasons for different performance regarding environmental, economic, social and governance domains. METHODS Five case-studies of agroforestry from nothern, eastern and southern Europe were assessed using an established sustainability assessment tool, the Public Goods tool (PG tool). The case studies were selected to represent a range of innovative and traditional systems, encompassing arable and livestock, wood fuel and tree fruit crops. RESULTS AND CONCLUSIONS All five of the case studies were performing well across a diverse range of sustainability criteria, with average scores of three out of five or higher across the assessment categories. Social capital and animal health and welfare management scores were particularly high, due to high rates of on-farm employment of between 0.4 and 2.3 full-time labour units per hectare, and a high volume of local sales alongside effective health planning and husbandry through health planning and a lack of restrictions on natural behaviour. Land Equivalent Ratios were greater than 1 within each case and were particularly high for established silvopasture systems (over 1.5). Fossil fuel use was considerably lower than the industry average in most of the case studies (between 17 and 92% of the country-average per hectare for three of the cases). Economic performance was highly variable, with high labour costs contributing to negative margins. SIGNIFICANCE The assessments show that agroforestry systems have considerable potential to contribute to multiple sustainability objectives, and that environmental and social sustainability objectives are particularly well addressed thr

Sustainable intensification is a process by which agricultural productivity is enhanced whilst also creating environmental and social benefits. We aimed to identify practices likely to deliver sustainable intensification, currently available for UK farms but not yet widely adopted. We compiled a list of 18 farm management practices with the greatest potential to deliver sustainable intensification in the UK, following a well-developed stepwise methodology for identifying priority solutions, using a group decision-making technique with key agricultural experts. The list of priority management practices can provide the focal point of efforts to achieve sustainable intensification of agriculture, as the UK develops post-Brexit agricultural policy, and pursues the second Sustainable Development Goal, which aims to end hunger and promote sustainable agriculture. The practices largely reflect a technological, production-focused view of sustainable intensification, including for example, precision farming and animal health diagnostics, with less emphasis on the social and environmental aspects of sustainability. However, they do reflect an integrated approach to farming, covering many different aspects, from business organization and planning, to soil and crop management, to landscape and nature conservation. For a subset of 10 of the priority practices, we gathered data on the level of existing uptake in English and Welsh farms through a stratified survey in seven focal regions. We find substantial existing uptake of most of the priority practices, indicating that UK farming is an innovative sector. The data identify two specific practices for which uptake is relatively low, but which some UK farmers find appealing and would consider adopting. These practices are: prediction of pest and disease outbreaks, especially for livestock farms; staff training on environmental issues, especially on arable farms.

Resource use and environmental impacts of a small-scale low-input organic vegetable supply system in the United Kingdom were assessed by emergy accounting and Life Cycle Assessment (LCA). The system consisted of a farm with high crop diversity and a related box-scheme distribution system. We compared empirical data from this case system with two modeled organic food supply systems representing high-and low-yielding practices for organic vegetable production. Further, these systems were embedded in a supermarket distribution system and they provided the same amount of comparable vegetables at the consumers' door as the case system. The on-farm resource use measured in solar equivalent Joules (seJ) was similar for the case system and the high-yielding model system and higher for the low-yielding model system. The distribution phase of the case system was at least three times as resource efficient as the models and had substantially less environmental impacts when assessed using LCA. The three systems ranked differently for emissions with the high-yielding model system being the worst for terrestrial ecotoxicity and the case system the worst for global warming potential. As a consequence of being embedded in an industrial economy, about 90% of resources (seJ) were used for supporting labor and service.