Research Topics
| S M McGinnSummaryAffiliation: Agriculture and Agri-Food Canada Country: Canada Publications
| Collaborators
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Detail Information
Publications
Quantifying ammonia emissions from a cattle feedlot using a dispersion modelS M McGinn
Agriculture and Agri Food Canada, 5403 1 Ave South, Lethbridge, Alberta, Canada T1J 4B1
J Environ Qual 36:1585-90. 2007..56). There was also evidence that rain suppressed the NH3 emission. Quantifying NH3 emission and dispersion from farms is essential to show the impact of farm management on reducing NH3-related environmental issues...- Assessment of the sulfur hexafluoride (SF6) tracer technique for measuring enteric methane emissions from cattleS M McGinn
Agriculture and Agri Food Canada, P O Box 3000, Lethbridge, AB, Canada T1J 4B1
J Environ Qual 35:1686-91. 2006..The high forage diet corresponds to the conditions of cattle grazing pasture, suggesting the SF6 tracer technique is most reliable for the grazing system... 
Crushed sunflower, flax, or canola seeds in lactating dairy cow diets: effects on methane production, rumen fermentation, and milk productionK A Beauchemin
Agriculture and Agri Food Canada, Lethbridge, Alberta, T1J 4B1, Canada
J Dairy Sci 92:2118-27. 2009..The use of crushed CS offers a means of mitigating methane without negatively affecting diet digestibility, and hence, milk production...- Prediction of enteric methane output from milk fatty acid concentrations and rumen fermentation parameters in dairy cows fed sunflower, flax, or canola seedsR Mohammed
Agriculture and Agri Food Canada, Lethbridge Research Centre, Lethbridge, Alberta T1J 4B1, Canada
J Dairy Sci 94:6057-68. 2011..Thus, milk FA alone may not be suitable for developing universal CHâ‚„ prediction equations... - Feeding saponin-containing Yucca schidigera and Quillaja saponaria to decrease enteric methane production in dairy cowsL Holtshausen
Agriculture and Agri Food Canada, Lethbridge, Alberta, Canada T1J 4B1
J Dairy Sci 92:2809-21. 2009..Lower efficiency of milk production of cows fed saponin, and potential reductions in feed digestion at high supplementation rates may make saponin supplements an unattractive option for lowering methane production in vivo... - Methane emissions from feedlot cattle fed barley or corn dietsK A Beauchemin
Agriculture and Agri Food Canada, Research Centre, Lethbridge, Alberta, Canada
J Anim Sci 83:653-61. 2005..Mitigating methane losses from cattle will have long-term environmental benefits by decreasing agriculture's contribution to greenhouse gas emissions... - Use of condensed tannin extract from quebracho trees to reduce methane emissions from cattleK A Beauchemin
Lethbridge Research Centre, Agriculture and Agri Food Canada, Lethbridge, Alberta, Canada, T1J 4B1
J Anim Sci 85:1990-6. 2007..Feeding up to 2% of the dietary DM as quebracho tannin extract failed to reduce enteric methane emissions from growing cattle, although the protein-binding effect of the quebracho tannin extract was evident... - Dairy farm methane emissions using a dispersion modelS M McGinn
Research Centre, Agriculture and Agri Food Canada, Lethbridge, Canada
J Environ Qual 41:73-9. 2012..The approach of understanding the farm-to-farm differences in CH(4) emissions as affected by diet, animal type, and manure management is essential when utilizing whole-farm emission measurements for mitigation and inventory applications... - Methane emissions from beef cattle: effects of fumaric acid, essential oil, and canola oilK A Beauchemin
Agriculture and Agri Food Canada, Research Centre, Box 3000, Lethbridge, Alberta, Canada
J Anim Sci 84:1489-96. 2006..Essential oils had no effect on methane emissions, whereas fumaric acid caused potentially beneficial changes in ruminal fermentation but no measurable reductions in methane emissions... - Technical note: Can the sulfur hexafluoride tracer gas technique be used to accurately measure enteric methane production from ruminally cannulated cattle?K A Beauchemin
Agriculture and Agri Food Canada, Lethbridge, Alberta, Canada
J Anim Sci 90:2727-32. 2012..However, if cannulated cattle are used, the cannulas need to be tight-fitting to minimize leakage, and large animal numbers are needed to overcome the additional variability... - Performance of a dispersion model to estimate methane loss from cattle in pensS M McGinn
Research Centre, Agriculture and Agri Food Canada, Box 3000, Lethbridge, AB, Canada T1J 4B1
J Environ Qual 38:1796-802. 2009..The results indicate that the bLS dispersion technique using cattle as point sources can be used to accurately measure enteric CH(4) from cattle and to evaluate the impact of dietary mitigation strategies... - Differing effects of 2 active dried yeast (Saccharomyces cerevisiae) strains on ruminal acidosis and methane production in nonlactating dairy cowsY H Chung
Agriculture and Agri Food Canada, Research Center, Lethbridge, AB, T1J 4B1, Canada
J Dairy Sci 94:2431-9. 2011.... - Methane emissions from grazing cattle using point-source dispersionS M McGinn
Agricultural and Agri Food Canada, 5403 1 Ave South, Lethbridge, AB, Canada T1J 4B1
J Environ Qual 40:22-7. 2011..In a release-recovery experiment, the technique accounted for 77% of the released methane at a single point. Our study shows the technique generates more reliable methane emissions during daytime (unstable stratification)... - Methane emissions from beef cattle: Effects of monensin, sunflower oil, enzymes, yeast, and fumaric acidS M McGinn
Agriculture and Agri Food Canada, Research Centre, Lethbridge, AB, Canada
J Anim Sci 82:3346-56. 2004..This study demonstrates that sunflower oil, ionophores, and possibly some yeast products can be used to decrease the GE lost as methane from cattle, but fiber digestibility is impaired with oil supplementation... - Coarse particulate matter emissions from cattle feedlots in AustraliaS M McGinn
Agriculture and Agri Food Canada, Lethbridge, AB, Canada T1J 4B1
J Environ Qual 39:791-8. 2010..A dispersion model used in our study estimated the emission of PM(10) between 31 and 60 g animal(-1) d(-1). These data contribute to needed information on PM(10) associated with livestock to develop results-based environmental policy... - An approach for measuring methane emissions from whole farmsS M McGinn
Agriculture and Agri Food Canada, P O Box 3000, Lethbridge, AB, Canada T1J 4B1
J Environ Qual 35:14-20. 2006..The location of the concentration observations downwind of the farm was critically important to the success of this technique... - Life-cycle assessment of greenhouse gas emissions from dairy production in Eastern Canada: a case studyE J Mc Geough
Agriculture and Agri Food Canada, Lethbridge, AB, Canada, T1J 4B1
J Dairy Sci 95:5164-75. 2012..Choice of coproduct allocation method can also significantly affect the relative allocation of GHG emissions to milk and meat... - Atmospheric ammonia, volatile fatty acids, and other odorants near beef feedlotsS M McGinn
Research Centre, Agriculture and Agri Food Canada, Box 3000, Lethbridge, Alberta, Canada T1J 4B1
J Environ Qual 32:1173-82. 2003..Differences among feedlots in odorant plume concentrations were partly related to the stocking density of feedlots, which presumably affects manure moisture and amount of volatiles within the pens... - Use of monensin controlled-release capsules to reduce methane emissions and improve milk production of dairy cows offered pasture supplemented with grainC Grainger
Department of Primary Industries, Ellinbank 3821, Victoria, Australia
J Dairy Sci 91:1159-65. 2008..However, a higher dose rate of monensin may be needed to reduce methane emissions from cows grazing pasture... - Methane emissions from dairy cows measured using the sulfur hexafluoride (SF6) tracer and chamber techniquesC Grainger
Department of Primary Industries, Ellinbank, Victoria, Australia
J Dairy Sci 90:2755-66. 2007..The SF6 tracer technique is reasonably accurate for inventory purposes and for evaluating the effects of mitigation strategies on CH4 emissions...