scholarly journals The Influence of Climate, Soil and Pasture Type on Productivity and Greenhouse Gas Emissions Intensity of Modeled Beef Cow-Calf Grazing Systems in Southern Australia

Animals ◽  
2012 ◽  
Vol 2 (4) ◽  
pp. 540-558 ◽  
Author(s):  
Matthew J. Bell ◽  
Brendan R. Cullen ◽  
Richard J. Eckard
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Gas Emissions ◽  
Beef Cow ◽  
Grazing Systems ◽  
Emissions Intensity ◽  
Cow Calf

Whole-farm systems modelling of greenhouse gas emissions from pastoral suckler beef cow production systems

2011 ◽  
Vol 142 (3-4) ◽  
pp. 222-230 ◽  
Author(s):  
P.A. Foley ◽  
P. Crosson ◽  
D.K. Lovett ◽  
T.M. Boland ◽  
F.P. O’Mara ◽  
...  
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Production Systems ◽  
Gas Emissions ◽  
Beef Cow ◽  
Farm Systems ◽  
Systems Modelling

Methods for exploring management options to reduce greenhouse gas emissions from tropical grazing systems

1994 ◽  
Vol 27 (1) ◽  
pp. 49-70 ◽  
Author(s):  
S. Mark Howden ◽  
David H. White ◽  
Greg M. Mckeon ◽  
Joe C. Scanlan ◽  
John O. Carter
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Management Options ◽  
Gas Emissions ◽  
Grazing Systems

Greenhouse gas emissions intensity of Ontario milk production in 2011 compared with 1991

2014 ◽  
Vol 94 (1) ◽  
pp. 155-173 ◽  
Author(s):  
Susantha Jayasundara ◽  
Claudia Wagner-Riddle
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Milk Production ◽  
Crop Production ◽  
Ghg Emissions ◽  
Manure Management ◽  
Enteric Fermentation ◽  
Gas Emissions ◽  
Emissions Intensity ◽  
Feed Crop

Jayasundara, S. and Wagner-Riddle, C. 2014. Greenhouse gas emissions intensity of Ontario milk production in 2011 compared with 1991. Can. J. Anim. Sci. 94: 155–173. For identifying opportunities for reducing greenhouse gas (GHG) emissions from milk production in Ontario, this study analyzed GHG intensity of milk [kg CO2 equivalents kg−1 fat and protein corrected milk (FPCM)] in 2011 compared with 1991 considering cow and crop productivity improvements and management changes over this period. It also assessed within-province variability in GHG intensity of milk in 2011 using county-level data related to milk production. After allocating whole-farm GHG emissions between milk and meat using an allocation factor calculated according to the International Dairy Federation equation, GHG intensity of Ontario milk was 1.03 kgCO2eq kg−1 FPCM in 2011, 22% lower than that in 1991 (1.32 kg CO2eq kg−1 FPCM). Greenhouse gas sources directly associated with dairy cattle decreased less (21 and 14% for enteric fermentation and manure management, respectively) than sources associated with feed crop production (30 to 34% for emissions related to N inputs and farm-field work). Proportions of GHG contributed from different life cycle activities did not change, with enteric fermentation contributing 46%, feed crop production 34%, manure management 18% and milking and related activities 2%. Within province, GHG intensity varied from 0.89 to 1.36 kg CO2eq kg−1 FPCM, a variation inversely correlated with milk productivity per cow (kg FPCM sold cow−1 year−1). The existence of a wide variation is strong indication for potential further reductions in GHG intensity of Ontario milk through the identification of practices associated with high efficiency.

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