Minimizing the environmental impact of dairy farming with perennial forage systems management is a complex process. The aim is to reduce greenhouse gas emissions (enteric methane, nitrous oxide from soil and carbon dioxide from equipment and fertilizer use), adapt to the effects of climate change, reduce nitrogen and phosphorus losses into the environment, improve soil health, promote biodiversity and optimize land use. Well-managed forage systems can reduce methane emissions and nitrate leaching, and minimize feeding of concentrates, which have a greater impact on the agro-ecosystem. This chapter explores emerging strategies such as management-intensive grazing and novel forage species, cultivars and mixtures. The chapter also presents research based and applied case studies of intensive grazing for dairy cows.