GreenFeed Publications

The following list is publications where GreenFeed was used to generate data within the publication. For ease of use, the topics are split into 6 categories to help ease of finding publications. A limited number of references may appear in two different categories because the topics overlap.

• Direct Comparisons
• Optimal Use, Statistics
• Dietary, Digestion, and Microbiology
• Physiology
• Animal Breeding
• Conference Abstracts

 

Method Comparisons
Alemu, A. W., D. Vyas, G. Manafiazar, J. A. Basarab, K. A. Beauchemin; Enteric methane emissions from low– and high–residual feed intake beef heifers measured using GreenFeed and respiration chamber techniques,, Journal of Animal Science, Vol 95, Issue 8, pp 3727–3737. https://doi.org/10.2527/jas.2017.1501

Arbre M., Y. Rochette, J. Guyader, C. Lascoux, L. Miguel Gamez, M. Eugane, D. Morgavi, G. Renand, M. Doreau, C. Martin. 2015. Repeatability of enteric methane determinations from cattle using either the SF6 tracer technique or the GreenFeed system. Anim. Prod. Sci. Vol. 56. pp 238-243. https://doi.org/10.1071/AN15512

Danielsson R., Ramin M, Bertilsson J, Lund P. Huhtanen P. 2017. Evaluation of a gas in vitro system for predicting methane production in vivo. J. Dairy Sci. Vol. 100. Issue 11. pp 8881-8894. https://doi.org/10.3168/jds.2017-12675

Doreau M., M. Arbre, Y. Rochette, C. Lascoux, M. Eugène, C. Martin. 2018. Comparison of 3 methods for estimating enteric methane and carbon dioxide emission in nonlactating cows. J. of Anim. Sci. Vol. 96. Issue 4. pp 1559-1569. https://doi.org/10.1093/jas/sky033

Dorich C.D., R.K. Varner, A.B.D. Pereira, R. Martineau, K.J. Soder, A.F. Brito. 2015. Short communication: Use of a portable automated open-circuit gas quantification system and the sulfur hexafluoride tracer technique for measuring enteric methane emissions in Holstein cows fed ad libitum or restricted. J. Dairy Sci. Vol 98. pp 2676-2681. https://doi.org/ 10.3168/jds.2014-8348

Hammond, K.J, D.J. Humphries, L.A. Crompton, C. Green, C.K. Reynolds. 2015. Methane emissions from cattle: Estimates from short-term measurements using a GreenFeed system compared with measurements obtained using respiration chambers or sulphur hexafluoride tracer. Anim Feed Sci Technol. V 203, pp 41-52. https://doi.org/10.1016/j.anifeedsci.2015.02.008.

Herd R.M., J.I. Velazco, P.F. Arthur, R.F. Hegarty. 2016. Associations amount methane emission traits measured in the feedlot and in respiration chambers in Angus cattle bred to vary in feed efficiency. J. of Anim. Sci. Vol. 94. Issue 11. pp 4882-4891. https://doi.org/10.2527/jas.2016-0613

Hristov, A.N., K. Oh, F. Giallongoa , T. Fredericka, M. Harpera, H.L. Weeks, A.F. Branco , P.J. Moate, M.C. Deighton, S.R. Williams, M. Kindermannd , S. Duvale. 2015. An inhibitor persistently decreased enteric methane emission from dairy cows with no negative effect on milk production. PNAS. Vol. 112 , pp 10663-10668. https://doi.org /10.1073/pnas.1504124112

Hristov A.N, J. Oh, F. Giallongo, T. Frederick, M.T. Harper, H. Weeks, A.F. Branco, W.J. Price, P.J. Moate, M.H. Deighton, S.R.O. Williams, M. Kindermann, S. Duval. 2016. Short communication: Comparison of the GreenFeed system with the sulfur hexafluoride tracer technique for measuring enteric methane emissions from dairy cows. J. Dairy Sci. Vol. 99. pp 5461–5465. https://doi.org/10.3168/jds.2016-10897

Hristov A.N., Kebreab E., Niu M., Oh J., Bannink A., Bayat A.R., Boland T.M.,
A.F. Brito, D.P. Casper, L.A. Crompton, J. Dijkstra, M. Eugène, P.C. Garnsworthy, N. Haque, A.L.F. Hellwing, P. Huhtanen, M. Kreuzer, B. Kuhla, P. Lund, J. Madsen, C. Martin, P.J. Moate, S. Muetzel, C. Muñoz, N. Peiren, J.M. Powell, C.K. Reynolds, A. Schwarm, K.J. Shingfield, T.M. Storlien, M.R. Weisbjerg, D.R. Yáñez-Ruiz, Z. Yu Symposium review: Uncertainties in enteric methane inventories, measurement techniques, and prediction models. J. Dairy Sci. 101 pp 6655-6674. https://doi.org/10.3168/jds.2017-13536

Huhtanen P., E. H. Cabezas-Garcia, S. Utsumi, S. Zimmerman. 2015. Comparison of methods to determine methane emissions from dairy cows in farm conditions. J. Dairy Sci. Vol. 98. pp 3394–3409. https://doi.org/10.3168/jds.2014-9118

Jonker A., G. Molano, C. Antwi, G.C. Waghorn. 2016. Enteric methane and carbon dioxide emissions measured using respiration chambers, the sulfur hexafluoride tracer technique, and a GreenFeed head-chamber system from beef heifers fed alfalfa silage at three allowances and four feeding frequencies. Anim. Sci. J. Vol. 94. Issue 10. pp 4326-433. https://doi.org/10.2527/jas.2016-0646

Rischewski J., A. Bielak, G. Nürnberg, M. Derno, B. Kuhla. 2017. Rapid Communication: Ranking dairy cows for methane emissions measured using respiration chamber or GreenFeed techniques during early, peak, and late lactation. Anim. Sci. J. Vol. 95. Issue 7. pp 3154-3159. https://doi.org/10.2527/jas.2017.1530

Velazco J., D. Mayer, S. Zimmerman, R. Hegarty. 2016. Use of short-term breath measures to estimate daily methane production by cattle. Animal, 10(1). pp 25-33. https://doi.org/10.1017/S1751731115001603

 

Optimal Use/Statistics
Arthur P.F., I. M. Barchia, C. Weber, T. Bird-Gardiner, K. A. Donoghue, R. M. Herd, R. S. Hegarty. 2017. Optimizing test procedures for estimating daily methane and carbon dioxide emissions in cattle using short-term breath measures. J. of Anim. Sci. Vol. 95. Issue 2. pp 645–656. https://doi.org/10.2527/jas.2016.0700

Cottle D., J. Velazco, R. Hegarty, D. Mayer. 2015. Estimating daily methane production in individual cattle with irregular feed intake patterns from short-term methane emission measurements. Animal. Vol. 9 Issue 12. pp 1949-1957. https://doi.org/10.1017/S1751731115001676

Gunter S.A., J.A. Bradford, C.A. Moffet. 2017. Effects of mass airflow rate through an open-circuit gas quantification system when measuring carbon emissions, J. Anim. Sci. Vol. 95. Issue 1. pp 475–484. https://doi.org/10.2527/jas.2016.0933

Hristov, A. N., Oh, J., Giallongo, F., Frederick, T., Weeks, H., Zimmerman, P. R., Harper, M. T., Hristova, R. A., Zimmerman, R. S., Branco, A. F. The Use of an Automated System (GreenFeed) to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals. J. Vis. Exp. (103), e52904, https://doi:10.3791/52904 (2015)

Manafiazer G., S. Zimmmerman, J.A. Basarab. 2017. Repeatability and variability of short-term spot measurement of methane and carbon dioxide from beef cattle using GreenFeed emissions monitoring system. Can J of Anim Sci Vol. 97. Issue 1. pp 118-126. https://doi.org/10.1139/cjas-2015-0190

Waghorn G., A. Jonker, K. MacDonald. 2016. Measuring methane from grazing dairy cows using GreenFeed. Anim. Prod Sci. Vol. 56 Issue 3. http://doi.org/10.1071/AN15491

 

Dietary, Digestion, Micro Biology Studies

Beck, M.R., L.R. Thompson, J.E. White, G.D. Williams, S.E. Place, C.A. Moffet, S.A. Gunter, R.R. Reuter.  2018.  Whole cottonseed supplmentation improves performance and reduces methane emissions intensity of grazing beef steers.  Professional Animal Scientist. 34:339-345. https://doi.org/10.15232/pas.2018-01722

Branco, A.F., F. Giallongo, T. Frederick, H. Weeks, J. Oh, A. N. Hristov. 2015. Effect of technical cashew nut shell liquid on rumen methane production and lactation performance of dairy cows. J. Dairy Sci. Vol 98. pp 4030-4040. https://doi.org/10.3168/jds.2014-9015

Cabezas-Garcia, E.H., S.J. Krizsan, K.J. Shingfield, P. Huhtanen. 2017. Effects of replacement of late-harvested grass silage and barley with early-harvested silage on milk production and methane emissions. J. Dairy Sci. Vol. 100. Issue 7. pp 5228-5240. https://doi.org/10.3168/jds.2017-13536

Cabezas-Garcia E.H., S.J. Krizsan, K.J. Shingfield, P. Huhtanen. 2017. Between-cow variation in digestion and rumen fermentation variables associated with methane production. J. Dairy Sci. Vol. 100. Issue 6. pp 4409-4424. https://doi.org/10.3168/jds.2016-12206

Cabezas-Garcia E.H., S.J. Krizsan, K.J. Shingfield, P. Huhtanen. 2018. Effects of replacement of late-harvested grass silage and barley with early-harvested silage on ruminal digestion efficiency in lactating dairy cows. J. Dairy Sci. Vol. 101. Issue 2. pp 1177 – 1189. https://doi.org/10.3168/jds.2017-13423

De Mulder T., Peiren N., L. Vandaele, T. Ruttink, S. DeCampeneere, T. VandeWiele. 2018. Impact of breed on the rumen microbial community composition and methane emission of Holstein Friesian and Belgian Blue heifers. Livestock Science. Vol. 207. pp 38-44. https://doi.org/10.1016/j.livsci.2017.11.009

Dijkstra J., Bannink, A., France, J., Kebreab, E, van Gastelen, S. 2018.  Short Communication: Antimethanogenic effects of 3-nitrooxypropanol depend on supplementation dose, dietary fiber.  J. Dairy. Sci. In press. https://doi.org/10.3168/jds.2018-14456

Doreau M., Arbre, M., Popova, M., Rochette, Y., & Martin, C. 2018. Linseed plus nitrate in the diet for fattening bulls: Effects on methane emission, animal health and residues in offal. Animal Vol. 12. Issue 3. pp 501-507. https://doi.org/10.1017/S1751731117002014

Ebert P.J., E.A. Bailey, A.L. Shreck, J.S. Jennings, N.A. Cole. 2017. Effect of condensed tannin extract supplementation on growth performance, nitrogen balance, gas emissions and energetic losses of beef steers. Anim. Sci. J. Vol. 95. Issue 3. pp 1345-1355. https://doi.org/10.2527/jas.2016.0341

Gidlund H., Hetta. M, Krizsan S.J., Lemosquet, Huhtanen P. 2015. Effects of soybean meal or canola meal on milk production and methane emissions in lactating dairy cows fed grass silage-based diets. J. Dairy Sci. Vol. 98. Issue 11. pp 8093 – 8106. https://doi.org/10.3168/jds.2015-9757

Gidlund H., M. Hetta, P. Huhtanen. 2017. Milk production and methane emissions from dairy cows fed a low or high proportion of red clover silage and an incremental level of rapeseed expeller. Livestock Science. Vol. 197. pp 73-851. https://doi.org/10.1016/j.livsci.2017.01.009

Hammond K.J., A.K. Jones, D.J. Humphries, L.A. Crompton, C.K. Reynolds. 2016. Effects of diet forage source and neutral detergent fiber content on milk production of dairy cattle and methane emissions determined using GreenFeed and respiration chamber techniques. J. Dairy Sci. Vol. 99. Issue 10. pp 7904–7917. https://doi.org/10.3168/jds.2015-10759

Harper M.T., J. Oh, F. Giallongo, J.C. Lopes, G.W. Roth, A.N. Hristov. 2017. Using brown midrib 6 dwarf forage sorghum silage and fall-grown oat silage in lactating dairy cow rations. J. Dairy Sci. Vol. 100. Issue 7. pp 5250-5265. https://doi.org/10.3168/jds.2017-12552

Harper M. T., J. Oh, F. Giallongo, G.W. Roth, A.N. 2017. Inclusion of wheat and triticale silage in the diet of lactating dairy cows. J. Dairy Sci. Vol. 100. Issue 8. pp 6151-6163. https://doi.org/10.3168/jds.2017-12553

Harper M.T., A. Melgar, J. Oh, K. Nedelkov, G. Sanchez, G.W. Roth, A.N. Hristov. 2018. Inclusion of brown midrib dwarf pearl millet silage in the diet of lactating dairy cows. J. Dairy Sci. Vol. 101. Issue 6. pp 5006–5019. https://doi.org/10.3168/jds.2017-14036

Hegarty R.S., J. Miller, N. Oelbrandt, L. Li, J. P. M. Luijben, D. L. Robinson, J. V. Nolan, H. B. Perdok. 2016. Feed intake, growth, and body and carcass attributes of feedlot steers supplemented with two levels of calcium nitrate or urea. J. of Anim. Sci. Vol. 94. Issue 12. pp 5372–5381. https://doi.org/10.2527/jas.2015-0266

Hristov A.N., C. Lee, T. Cassidy, K. Heyler, J.A. Tekippe, G.A. Varga, B. Corl, R.C. Brandt. 2013. Effect of Origanum vulgare L. leaves on rumen fermentation, production, and milk fatty acid composition in lactating dairy cows. J. Dairy Sci. Vol. 96. Issue 2. pp 1189-1202. https://doi.org/10.3168/jds.2012-5975

Lopes J.C., L.F. de Matos, M.T. Harper, F. Giallongo, J. Oh, D. Gruen, S. Ono, M. Kindermann, S. Duval, A.N. Hristov. 2016. Effect of 3-nitrooxypropanol on methane and hydrogen emissions, methane isotopic signature, and ruminal fermentation in dairy cows. J. Dairy Sci. Vol. 99. Issue 7. pp 5335–5344. https://doi.org/10.3168/jds.2015-10832

Jonker A., D. Scobie, R. Dynes, G. Edwards, C. DeKlein, H. Hauge, R. McAuliffe, A. Taylor, T.Knight, G. Waghorn. 2017. Feeding diets with fodder beet decreased methane emissions from dry and lactating dairy cows in grazing systems. Animal Production Science 57. pp 1445-1450. https://doi.org/10.1071/AN16441

Niu M., J.Appuhamy, A.Leytem, R. Dungan, E.Kebreab. 2016. Effect of dietary crude protein and forage contents on enteric methane emissions and nitrogen excretion from dairy cows simultaneously. Anim. Prod. Sci. Vol. 56. Issue 3. pp 312-321. https://doi.org/10.1071/AN15498

Hguygen, S.H., G. Bremner, M. Cameron, R. Hegarty. 2016. Methane emissions, ruminal characteristics and nitrogen utilisation changes after refaunation of protozoa-free sheep. Small Ruminant Research , Vol 144 , pp 48 - 55. https://doi.org/10.1016/j.smallrumres.2016.08.002.

Hguygen, S.H., H.D. Hguygen, G. Bremner, M. Cameron, R. Hegarty. 2018. Methane emissions and productivity of defaunated and refaunated sheep while grazing. Small Ruminant Research, Vol. 161, pp 28 - 33. https://doi.org/10.1016/j.smallrumres.2018.02.004.

Pang D., Yan T., Trevisi E., Krizsan S.J. 2017. Effect of grain- or by-product-based concentrate fed with early- or late-harvested first-cut grass silage on dairy cow performance. J. Dairy Sci.  Vol. 101.  pp 7133–7145. https://doi.org/10.3168/jds.2018-14449

Popova M., E. McGovern, M. McCabe, C. Martin, M. Doreau, M. Arbre, S. Meale, D. Morgavi, S. Waters. 2017. The Structural and Functional Capacity of Ruminal and Cecal Microbiota in Growing Cattle Was Unaffected by Dietary Supplementation of Linseed Oil and Nitrate. Frontiers in Microbiology. Vol. 8. pp 937. https://doi.org/10.3389/fmicb.2017.00937

 

Physiology

Arthur, P.F., T. Bird-Gardiner, I.M. Barchia, K.A. Donoghue, R.M. Herd; Relationships among carbon dioxide, feed intake and feed efficiency traits in ad libitum fed beef cattle, J. of Anim. Sci. In Press. https://doi.org/10.1093/jas/sky308

Bird-Gardiner T., P.F. Arthur, I.M. Barchia, K.A. Donoghue, R.M. Herd. 2017. Phenotypic relationships among methane production traits assessed under ad libitum feeding of beef cattle. J. of Anim. Sci. Vol. 95. Issue 10. pp 4391-4398. https://doi.org/10.2527/jas2017.1477

Caetano M., M. J. Wilkes, W.S. Pitchford, S.J. Lee, P.I Hynd. 2017. Energy relations in cattle can be quantified using open-circuit gas-quantification systems. Animal Production Science. https://doi.org/10.1071/AN16745

Herd R., J. Velazco, P. Arthur, R. Hegarty. 2016. Proxies to adjust methane production rate of beef cattle when the quantity of feed consumed is unknown. Anim. Prod. Sci. Vol. 56 Issue 3. pp 231-237. https://doi.org/10.1071/AN15477

Pereira D., S. Utsumi, C. Dorich, A. Brito. 2015. Integrating spot short-term measurements of carbon emissions and backward dietary energy partition calculations to estimate intake in lactating dairy cows fed ad libitum or restricted. J. Dairy Sci. Vol. 98 Issue 12. pp 8913-8925. https://doi.org/10.3168/jds.2015-9659

Watt L.J., C.E.F. Clark, G.L. Krebs, C.E. Petzel, S. Nielsen, S.A. Utsumi. 2015. Differential rumination, intake, and enteric methane production of dairy cows in a pasture-based automatic milking system. J. Dairy Sci. Vol. 98. Issue 10. pp 7248-7263. https://doi.org/10.3168/jds.2015-9463

 

Breeding/Genetics
Bird-Gardiner T., P.F. Arthur, I.M. Barchia, K.A. Donoghue, R.M. Herd. 2017. Phenotypic relationships among methane production traits assessed under ad libitum feeding of beef cattle. J. of Anim. Sci. Vol. 95. Issue 10. pp 4391-4398. https://doi.org/10.2527/jas2017.1477

Cottle D.J. 2017. Optimising natural 13C marker based pasture intake estimates for cattle using a genetic algorithm approach. Livestock Science. Vol. 197. pp 53-60. https://doi.org/10.1016/j.livsci.2017.01.004

Herd R. M., J. I. Velazco, P. F. Arthur, R. F. Hegarty. 2016. Associations among methane emission traits measured in the feedlot and in respiration chambers in Angus cattle bred to vary in feed efficiency. Anim. Sci. J. Vol. 94. Issue 11. pp 4882–4891. https://doi.org/10.2527/jas.2016-0613

Manafiazer G., S. Zimmmerman, J.A. Basarab. 2017. Repeatability and variability of short-term spot measurement of methane and carbon dioxide from beef cattle using GreenFeed emissions monitoring system. Can J of Anim Sci Vol. 97. Issue 1. pp 118-126. https://doi.org/10.1139/cjas-2015-0190

Renand G., D. Maupetit . 2016. Assessing individual differences in enteric methane emission among beef heifers using the GreenFeed Emission Monitoring system: effect of the length of testing period on precision. Animal Production Science 56, pp 218-223 https://doi.org/10.1071/AN15429

Robinson D.L., V.H. Oddy. 2016. Benefits of including methane measurements in selection strategies. J. of Anim. Sci. Vol. 94. Issue 9. pp3624-3635. https://doi.org/10.2527/jas.2016-0503

Velazco J.I., Herd R. M., Cottle D. J., Hegarty R. S. 2016. Daily methane emissions and emission intensity of grazing beef cattle genetically divergent for residual feed intake. Animal Production Science 57. pp 627-635. https://doi.org/10.1071/AN15111

 

Conference Abstracts

2015

Conway, A.C, J. J. Michal, J. S. Chang, B. Carter, M. E. Benson, T. Bodine, and K. A. Johnson.  2015.  The effect of carbohydrate source in a urea-based liquid supplement on ruminal fermentation and methane production of wintering beef cows fed low-quality forage. J. Dairy Sci. Vol. 98, Suppl. View Here

de Matos, L.F., M.T. Harper, J. Lopes, F. Giallongo, J. Oh, D. Gruen, A.N. Hristov, M. Kindermann, and S. Duval. 2015. Effect of 3-nitrooxypropanol on ruminal fermentation, methane and hydrogen emissions, and methane isotopic composition in dairy cows.  J. Dairy Sci. Vol. 98, E-Suppl. View Here.

Hristov, A.N., J. Oh, F. Giallongo, M.T. Harper, H. Weeks, A.F. Branco, P.J. Moate, M.H. Deighton, S.R.O. Williams, M. Kindermann, and S. Duval. 2015. A novel inhibitor persistently decreased enteric methane emission and increased weight gain of high-producing Holstein cows without negatively affecting milk production.  J. Dairy Sci. Vol. 98, E-Suppl. View Here

Matias J.A, F. Sun, S. Welch, and M.A. Wattiaux. 2015. Effect of a ruminal acidosis challenge on methane emission rate in lactating cows. J. Dairy Sci. Vol. 98, E-Suppl.  View Here

Oh, J., F. Giallongo, T. Frederick1, M.T. Harper, H. Weeks, A.F. Branco, A.N. Hristov, W.J. Price, P.J. Moate, M.H. Deighton, S.Ri. O. Williams, M. Kindermann, and S. Duval. 2015.  J. Dairy Sci. Vol. 98, E-Suppl. View Here

Pereira, A.B.D, A.F. Brito, S.A. Utsumi, B.J. Isenberg, and K.S. O’Connor. 2015. Evaluating carbon and oxygen flux variability and heat production in dairy cows using a portable automated gas quantification system. J. Dairy Sci. Vol. 98, E-Suppl. View Here

Ramin, M, A. Höjer, H. Mårten, and P. Huhtanen. 2015. Effect of heat-treated field beans (Vicia faba) on lactation performance of dairy cows. J. Dairy Sci. Vol. 98, E-Suppl.  View Here

Renand, G. 2016. Assessing precision and accuracy of enteric methane flux measures using GreenFeed systems. Melbourne GreenFeed Workshop 2016. View Here

Shreck A.L., D. N. D. Aluthge, J.S. Jennings, C.S, Fernando, and N.A. Cole. 2015. Effect of protein supplementation to low-quality forage diets on enteric methane production and ruminal microbial community structure of beef steers. J. Dairy Sci. Vol. 98, Suppl.  View Here

Shreck A,L, P.J. Ebert, E.A. Bailey, J.S. Jennings, and N.A Cole. 2015. Effect of altered nitrogen excretion by condensed tannin supplementation on steer energy losses. J. Dairy Sci. Vol. 98, E-Suppl.  View Here

Zimmerman, S., J. Roche, and P. Zimmerman. 2015. Aerodynamic design of a TMR feed bin to measure gaseous emissions from cattle.  J. Dairy Sci. Vol. 98, E-Suppl. View Here

2014

Branco, A. F., F. Gaillong, T. Frederick, H. Weeeks, J. Oh, A.N. Hristov. 2014. Effect of Cashew Nut Shell Liquid on Lactation Performance and Rumen Methane Production in Dairy Cows. J. Dairy Sci. 97 (E-Suppl): 854.  View Here

Hammond, K, A.K. Jones, D. K. Humphries, L.A. Crompton, C.K. Reynolds. 2014. Effects of Forage Source and NDF Concentration on Methane Emissions and Milk Production of Dairy Cows.  J. Dairy Sci. 97 (E-Suppl): 853. View Here

Huhtanen. P, E.H. Cabezas Garcia, S. Zimmerman, P. Zimmerman. 2014 Comparison of active flux and passive concentration measurement of methane emissions from cattle. J. Dairy Sci. 97 (E-Suppl): 275.  View Here

Pereira, A., A. Brito, S. Utsumi. 2014. Estimation of Heat Production and Energy Conversion Efficiency Using Real Time Measurements of Methane and Carbon Dioxide Fluxes in Mid-Lactation Hostien Cows. J. Dairy Sci. 97 (E-Suppl): 746.  View Here

Velazco J.I, D. J. Cottle, R. S. Hegarty. 2014. Methane emissions and feeding behavior of feedlot cattle supplemented with nitrate or urea. Animal Production Science 54:1737-1740. View Here

2013

Hammond, K., D. J. Humphries, L. A. Crompton, P. Kirton, C. Green, and C. K. Reynolds. 2013. Methane (GreenFeed) compared emissions from growing dairy heifers estimated using an automated head chamber to respiration chambers or SF6 techniques. Adv. Anim. Biosci. 4:391. View Here

Huhtanen, P., S. J. Krizsan, M. Hetta, H. Gidlund, and E. H. Cabezas Garcia. 2013. Repeatability and between cow variability of enteric CH4 and total CO2 emissions. Adv. Anim. Biosci. 4:588.  View Here

Michal, J.J., P, S.J. Krizsan, M. Hetta, H. Gidlund, E.H. Cabezas Garcia. 2013. An examination of the ranking of methane emissions from growing beef heifers fed different forage diets over time. Adv. Anim. Biosci. 4:536. View Here

Renand, G., E. Ricard, D. Maupeti, J.C. Thouly. 2013. Variability among individual young beef bulls and heifers in methane emissions. Book of Abstracts of the Annual Meeting of the European Association for European Federation of Animal Science, Nantes, France.  Page 195.  View Here

Pereira A. B., A. F. Brito, S. Zimmerman, N. Antaya.  2013. Evaluating carbon fluxes variability in late lactation organic Jersey cows using a portable automated gas quantification system during the grazing season.  J. Dairy Sci. 96(E-Suppl. 1): 600.  View Here

Waghorn, G., E. J. Garnet, C. S. Pinares, and S. Zimmerman. 2013. Implementation of GreenFeed for estimating methane in a dairy herd grazing pasture. Adv. Anim. Biosci. 4:436. View Here

Weber, K.L., J.A. Rendon, C. Antwi, A.L. Ven Eenennaam, E. Krebreab. 2013. Methane production is not associated with sire groups or residual feed intake in feedlot Angus cattle. Adv. Anim. Biosci. 4:518.  View Here

Zimmerman, S., A. Brito, P. Huhtanen, K. Johnson, J. Michal, A. Pereira, C. Pineras, S. Utsumi, G. Waghorn, and P. Zimmerman. 2013. Measurement and evaluation of enteric CH4 emissions and variability in production systems. Adv. Anim. Biosci. 4:518. View Here

Velazco, J.L, g. Bremmer, L. Li, K Luijben, R.S. Hegarty, H, P. Perdox. 2013. Short-term emission measurements in beef feedlot cattle to demonstrate enteric methane mitigation from dietary  nitrate. Adv. Anim. Biosci. 4:579.  View Here

Zimmerman. S., J. J. Michal, R. White, K. A. Johnson, A. Guerouali, P. Zimmerman. 2013. Evaluation of a novel system to measure enteric methane emissions from beef cattle on pasture.  J. Dairy Sci. 96(E-Suppl. 1):471.  View Here

2012

Nelson, N., K. Steensma, S. Utsumi, D. K. Beede, S. Zimmerman, P. Zimmerman. 2012. Enteric methane emissions by dairy cows grazing temperate pastures.  J. Dairy Sci. 95(Suppl. 2): 584.  View Here

 

2011

Utsumi S., D. Beede, S. Zimmerman, and P. Zimmerman. 2011. Whole herd enteric methane emission estimates in three contrasting daisy systems. J. Dairy Sci. 94(E-Suppl. 1): 607.  View Here

Waghorn, G, C. Pinares, P. Zimmerman, S. Zimmerman. 2011. Zealand Validation and Field tests test of GreenFeed an automated system for the measurement of methane fluxes from ruminants. Unpublished paper presented at the Sixth International Symposium on Non-CO2  Greenhouse Gases, November 2011, Amsterdam,The Netherlands.

Zimmerman. P., S. Zimmerman, S. Utsumi, D. Beede. 2011.  Development of a user-friendly online system to quantitatively measure metabolic gas fluxes from ruminants.  J. Dairy Sci. 94(E-Suppl. 1):856. View Here