Fig. 4From: Characterization and mitigation option of greenhouse gas emissions from lactating Holstein dairy cows in East ChinaCarbon dioxide emissions of lactating Holstein dairy cows with different total milk solids yields. Total CO2: P < 0.05, Total CO2/MW: P < 0.05, Total CO2/ECM: P < 0.05. MW: metabolic weight (kg). Total CO2, total CO2 production (g/d) = \( {\mathrm{CH}}_{4\left({\mathrm{CO}}_2-\mathrm{eq}\right)} \) (g/d) + CO2 production (g/d). ECM, Energy-corrected milk (kg/d) = milk yield (kg/d) × [(38.3 × fat (%) × 10 + 24.2 × protein (%) × 10 + 16.54 × lactose (%) × 10 + 20.7) ÷ 3140]Back to article page