The agreement between two next-generation laser methane detectors and respiration chamber facilities in recording methane concentrations in the spent air produced by dairy cows

Berry, D., Cromie, A., McHugh, N., Burke, M., Pabiou, T., MacCarthy, J., Kearney, J., Buckley, F., Evans, R., Purfield, D. 2012. New traits for dairy cattle breeding, Proceedings 38th International Committee for Animal Recording (ICAR) Meeting, Cork, Ireland. p. 2013. in http://www.icar.org/Cork_2012/Manuscripts/Published/Berry.pdf. Accessed May 8, 2017. Bland, 1986, Statistical methods for assessing agreement between two methods of clinical measurement, Lancet, 327, 307, 10.1016/S0140-6736(86)90837-8 Bland, 1995, Comparing methods of measurement: why plotting difference against standard method is misleading, Lancet, 346, 1085, 10.1016/S0140-6736(95)91748-9 Buehler, K., Wanner, M. 2014. Chapter 6: Metabolic Centre of the University of Zurich and ETH Zurich (under construction). In: Technical Manual on Respiration Chamber Designs. C. Pinares and G. Waghorn (Eds.). Ministry of Agriculture and Forestry, Wellington, New Zealand. p. 89-106 in http://www.globalresearchalliance.org/wp-content/uploads/2012/03/GRA-MAN-Facility-BestPract-2012-FINAL.pdf. Accessed February 15, 2017. Chagunda, 2009, On the use of a laser methane detector in dairy cows, Comput. Electron. Agric., 68, 157, 10.1016/j.compag.2009.05.008 Chagunda, 2011, Do methane measurements from a laser detector and an indirect open-circuit respiration calorimetric chamber agree sufficiently closely?, Anim. Feed Sci. Technol., 165, 8, 10.1016/j.anifeedsci.2011.02.005 Chagunda, 2013, Measurement of enteric methane from ruminants using a hand-held laser methane detector, Acta Agric. Scand. A, 63, 68 Derno, 2009, Technical note: a new facility for continuous respiration measurements in lactating cows, J. Dairy Sci., 92, 2804, 10.3168/jds.2008-1839 Difford, 2016, Interchangeability between methane measurements in dairy cows assessed by comparing precision and agreement of two non-invasive infrared methods, Comput. Electron. Agric., 124, 220, 10.1016/j.compag.2016.04.010 Eastridge, 2006, Major advances in applied dairy cattle nutrition, J. Dairy Sci., 89, 1311, 10.3168/jds.S0022-0302(06)72199-3 Gardiner, 2015, Determination of the absolute accuracy of UK chamber facilities used in measuring methane emissions from livestock, Measurement, 66, 272, 10.1016/j.measurement.2015.02.029 Grobler, 2014, Methane production in different breeds, grazing different pastures or fed a total mixed ration, as measured by a Laser Methane Detector, S. Afr. J. Anim. Sci., 44, 12, 10.4314/sajas.v44i5.3 Hammond, 2016, Review of current in vivo measurement techniques for quantifying enteric methane emission from ruminants, Anim. Feed Sci. Technol., 219, 13, 10.1016/j.anifeedsci.2016.05.018 Hristov, 2013, Mitigation of methane and nitrous oxide emissions from animal operations: I. A review of enteric methane mitigation options, J. Anim. Sci., 91, 5045, 10.2527/jas.2013-6583 Johnson, 1995, Methane emissions from cattle, J. Anim. Sci., 73, 2483, 10.2527/1995.7382483x Lin, 1989, A concordance correlation coefficient to evaluate reproducibility, Biometrics, 45, 255, 10.2307/2532051 McGinn, 2013, Developments in micrometeorological methods for methane measurements, Animal, 7, 386, 10.1017/S1751731113000657 Pickering, 2015, Genetic parameters for predicted methane production and laser methane detector measurements, J. Anim. Sci., 92, 11, 10.2527/jas.2014-8302 Pinares-Patiño, 2013, Heritability estimates of methane emissions from sheep, Animal, 7, 316, 10.1017/S1751731113000864 Ricci, 2014, Evaluation of the laser methane detector to estimate methane emissions from ewes and steers, J. Anim. Sci., 92, 5239, 10.2527/jas.2014-7676 Wall, 2010, Developing breeding schemes to assist mitigation of greenhouse gas emissions, Animal, 4, 366, 10.1017/S175173110999070X Wu, 2016, Temporal and spatial variation of methane concentrations around lying cubicles in dairy barns, Biosyst. Eng., 151, 464, 10.1016/j.biosystemseng.2016.10.016