Case Study: Livestock
From SDG Academy
Intensive livestock systems have conversion efficiency in that a kilogram of product becomes a kilogram of meat and shows a lower environmental footprint, while extensive systems have high emissions per unit of product, but animal welfare is not necessarily better in either one of these systems. In terms of emissions, livestock are such less efficient than crops, particularly in terms of nitrogen. Ruminants rely on fermentation to produce energy and therefore produce methane, which accounts for approximately 50 percent of all livestock emissions. There needs to be a balance between monogastric industries – with lower levels of emissions, and ruminant systems – which compete less for human edible feed. The final challenge is around matching the system with the environment and the livestock with the environment, an example of which is the Holstein cow.
This video is licensed under the CC BY-NC-SA license.