Anthropogenic greenhouse gas emissions (GHG) are recognized as a key contribution of global climate change. GHGs from all industrial sectors need to decrease in order to reach the target of limiting average global warming to 2C until 2100 compared to pre-industrial times. A specific focus in this dissertation lies on GHG emission from the Austrian livestock sector and the role of national meat production to climate change. Livestock alone is considered to contribute up to 18% to the global GHG budget. In four different research papers this study provides GHG trends in general, and specifically for the livestock sector of Austria until the end of the century as well as GHG footprints of livestock products and meat waste. First, based on the IPCCs Representative Concentration Pathways (RCP), long-term GHG emission trends for Austria were created and compared with current national and European climate policies. Second, existing GHG emissions and emission projections from the livestock sector were compared on three different spatial levels and two different system boundary settings. GHG emissions considering all stages of the life cycle were set in contrast to inventory emissions. Third, a Life Cycle Analysis (LCA) was conducted which assessed impacts on acidification, eutrophication and global warming potential of Austria's pork production. Forth, the end product of the respective sector, meat waste, was the focus topic. We assessed the mitigation potential with the help of a Sustainability Impact Assessment using a scenario in which no ready-made meat is wasted. Considering the outcomes of the last Climate Conference in Paris (COP21) actions are needed immediately to reach the 2C target. The results of the thesis contribute to a better understanding of GHG flows and can raise awareness of the impacts of livestock production on the climate. However, current policies seem not able to meet Austria's share to contribute to the 2 target.