Declining sulphur hexafluoride permeability of polytetrafluoroethylene membranes causes overestimation of calculated ruminant methane emissions using the tracer technique

Autor: M. H. Deighton, Peter J. Moate, B.M. O’Loughlin, T. M. Boland, Emer Kennedy, Richard Eckard, S.R.O. Williams

Publikováno v: Animal Feed Science and Technology. 183:86-95

Predictable release of sulphur hexafluoride (SF6) from permeation tubes is critical for determination of enteric methane emissions from ruminants using the calibrated tracer technique. Experiments comparing respiration chambers and the SF6 technique

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::94e7ebc2fab9490ce864bfc398365b99
https://doi.org/10.1016/j.anifeedsci.2013.04.021

A simple method for pre-calibration storage of sulphur hexafluoride permeation tubes

Autor: M.H. Deighton, T. M. Boland, B.M. O’Loughlin, Frank Buckley

Publikováno v: Animal Feed Science and Technology. :198-200

Long term storage of sulphur hexafluoride (SF 6 ) permeation tubes, used to determine enteric emissions from ruminants using a calibrated tracer (ERUCT) technique, is desirable to increase flexibility of post-manufacture tube handling. To be effectiv

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6f7e36afa5f6c707bba339af8e497c9a
https://doi.org/10.1016/j.anifeedsci.2011.04.011

Effect of pregrazing herbage mass on methane production, dry matter intake, and milk production of grazing dairy cows during the mid-season period

Autor: C. Wims, Michael O'Donovan, Eva Lewis, Luc Delaby, B.M. O’Loughlin, T. M. Boland, M. H. Deighton

Publikováno v: Journal of Dairy Science
Journal of Dairy Science, American Dairy Science Association, 2010, 93 (10), pp.4976-4985. ⟨10.3168/jds.2010-3245⟩

International audience; Increasing milk production from pasture while increasing grass dry matter intake (GDMI) and lowering methane (CH4) emissions are key objectives of low-cost dairy production systems. It was hypothesized that offering swards of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce3aa3146ff9aece12e708af24b34799
https://pubmed.ncbi.nlm.nih.gov/20855032

Effect of sward maturity on the dry matter intake, enteric methane emission and milk solids production of pasture grazed dairy cows

Autor: Michael O'Donovan, Eva Lewis, B.M. O’Loughlin, M. H. Deighton, C. Wims

Publikováno v: Advances in Animal Biosciences. 1:262

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::15bcc8b0680a982a9a10a01306bb24e9
https://doi.org/10.1017/s204047001000405x

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