D. O’Brien

A life cycle assessment of seasonal grass-based and confinement dairy farms

D. O’Brien, L. Shalloo, J. Patton et al. · Agricultural Systems · 2012 · 189 citations

Agricultural Impact, Engineering, Confinement Dairy Farms +10

A case study of the carbon footprint of milk from high-performing confinement and grass-based dairy farms

D. O’Brien, Judith L. Capper, P. C. Garnsworthy et al. · Journal of Dairy Science · 2014 · 152 citations · Full text

Engineering, Lca Methodology, Life-cycle Assessment +13

The influence of strain of Holstein-Friesian cow and feeding system on greenhouse gas emissions from pastoral dairy farms

D. O’Brien, L. Shalloo, C. Grainger et al. · Journal of Dairy Science · 2010 · 94 citations · Full text

Relating the carbon footprint of milk from Irish dairy farms to economic performance

D. O’Brien, Thia Hennessy, Brian Moran et al. · Journal of Dairy Science · 2015 · 90 citations · Full text

A national methodology to quantify the diet of grazing dairy cows

D. O’Brien, Brian Moran, L. Shalloo · Journal of Dairy Science · 2018 · 77 citations · Full text