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O' Connor E, McGovern FM, Berry DP, Dunne E, McEwan JC, Rowe SJ, Boland TM, Morrison SJ, Aubry A, Yan T, McHugh N. Comparison of greenhouse gas emissions from sheep measured using both respiration and portable accumulation chambers. Animal 2024; 18:101140. [PMID: 38626708 DOI: 10.1016/j.animal.2024.101140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/15/2024] [Accepted: 03/15/2024] [Indexed: 04/18/2024] Open
Abstract
Methane (CH4) is a potent gas produced by ruminants, and new measurement techniques are required to generate large datasets suitable for genetic analysis. One such technique are portable accumulation chambers (PAC), a short-term sampling method. The objectives of the current study were to explore the relationship between CH4 and carbon dioxide (CO2) output measured using both PAC and respiration chambers (RC) in growing lambs, and separately investigate the relationship among CH4, CO2 and measured ad libitum DM intake (DMI). Methane, CO2 and DMI were measured on 30 Suffolk and 30 Texel ewe lambs (age 253 ± 12 days) using the RC and PAC sequentially. The experiment was conducted over a 14-day period, with DMI measured from days 1 to 14; measurements in RC were conducted from days 10 to 12, while measurements in PAC were taken twice, the day immediately prior to the lambs entering the RC (day 9; PAC Pre-RC) and on the day lambs exited the RC (day 13; PAC Post-RC). Greater CH4 and CO2 output was measured in the RC than in the PAC (P < 0.01); similarly mean CH4 yield was greater when measured in the RC (15.39 ± 0.452 g CH4/kg DMI) compared to PAC (8.01 ± 0.767 g CH4/kg DMI). A moderate correlation of 0.37 was found between CH4 output measured in PAC Pre-RC and the RC, the corresponding regression coefficient of CH4 output measured in the RC regressed on CH4 output measured in PAC Pre-RC was close to unity (0.74; SE 0.224). The variance of CH4 and CO2 output within the measurement technique did not differ from each other (P > 0.05). Moderate to strong correlations were found between CH4 and CO2 per kg of live weight and CH4 and CO2 yield. Results from this study highlight the suitability of PAC as a ranking tool to rank animals based on their gaseous output when compared to the RC. However, repeated measurements separated by several days may be beneficial if precise rankings are required. Given the close to unity regression coefficient of CH4 output measured in the RC regressed on CH4 output measured in PAC Pre-RC suggests that PAC could also be potentially used to estimate absolute CH4 output; however, further research is required to substantiate this claim. When DMI is unknown, CH4 and CO2 per kg of live weight are a suitable alternative to the measurement of CH4 and CO2 yield.
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Affiliation(s)
- E O' Connor
- Teagasc, Animal and Grassland Research and Innovation Centre, Athenry, Co. Galway H65 R718, Ireland; School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4 D04 V1W8, Ireland
| | - F M McGovern
- Teagasc, Animal and Grassland Research and Innovation Centre, Athenry, Co. Galway H65 R718, Ireland
| | - D P Berry
- Teagasc, Animal and Grassland Research and Innovation Centre, Fermoy, Co. Cork P61 P302, Ireland
| | - E Dunne
- Teagasc, Animal and Grassland Research and Innovation Centre, Athenry, Co. Galway H65 R718, Ireland
| | - J C McEwan
- AgResearch Ltd, Invermay Agricultural Centre, Private Bag 50034, Mosgiel 9053, New Zealand
| | - S J Rowe
- AgResearch Ltd, Invermay Agricultural Centre, Private Bag 50034, Mosgiel 9053, New Zealand
| | - T M Boland
- School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4 D04 V1W8, Ireland
| | - S J Morrison
- Agri-Food and Bioscience (AFBI), Hillsborough, Co. Down BT26 6DR, UK
| | - A Aubry
- Agri-Food and Bioscience (AFBI), Hillsborough, Co. Down BT26 6DR, UK
| | - T Yan
- Agri-Food and Bioscience (AFBI), Hillsborough, Co. Down BT26 6DR, UK
| | - N McHugh
- Teagasc, Animal and Grassland Research and Innovation Centre, Fermoy, Co. Cork P61 P302, Ireland.
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Grigas T, Ovadnevaite J, Ceburnis D, Moran E, McGovern FM, Jennings SG, O’Dowd C. Sophisticated Clean Air Strategies Required to Mitigate Against Particulate Organic Pollution. Sci Rep 2017; 7:44737. [PMID: 28303958 PMCID: PMC5356191 DOI: 10.1038/srep44737] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 02/13/2017] [Indexed: 11/16/2022] Open
Abstract
Since the 1980's, measures mitigating the impact of transboundary air pollution have been implemented successfully as evidenced in the 1980-2014 record of atmospheric sulphur pollution over the NE-Atlantic, a key region for monitoring background northern-hemisphere pollution levels. The record reveals a 72-79% reduction in annual-average airborne sulphur pollution (SO4 and SO2, respectively) over the 35-year period. The NE-Atlantic, as observed from the Mace Head research station on the Irish coast, can be considered clean for 64% of the time during which sulphate dominates PM1 levels, contributing 42% of the mass, and for the remainder of the time, under polluted conditions, a carbonaceous (organic matter and Black Carbon) aerosol prevails, contributing 60% to 90% of the PM1 mass and exhibiting a trend whereby its contribution increases with increasing pollution levels. The carbonaceous aerosol is known to be diverse in source and nature and requires sophisticated air pollution policies underpinned by sophisticated characterisation and source apportionment capabilities to inform selective emissions-reduction strategies. Inauspiciously, however, this carbonaceous concoction is not measured in regulatory Air Quality networks.
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Affiliation(s)
- T. Grigas
- School of Physics and Centre for Climate and Air Pollution Studies, Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - J. Ovadnevaite
- School of Physics and Centre for Climate and Air Pollution Studies, Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - D. Ceburnis
- School of Physics and Centre for Climate and Air Pollution Studies, Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - E. Moran
- Met Éireann Glasnevin, Dublin 9, D09 Y921, Ireland
| | - F. M. McGovern
- Environmental Protection Agency, Clonskeagh, Dublin 14, D14 YR62, Ireland.
| | - S. G. Jennings
- School of Physics and Centre for Climate and Air Pollution Studies, Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - C. O’Dowd
- School of Physics and Centre for Climate and Air Pollution Studies, Ryan Institute, National University of Ireland Galway, Galway, Ireland
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Campion FP, McGovern FM, Lott S, Fahey AG, Creighton P, Boland TM. Comparison of energy rationing systems for late gestation ewes: Impacts on ewe and lamb performance1. J Anim Sci 2016; 94:3441-3456. [DOI: 10.2527/jas.2016-0522] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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McGovern FM, Campion FP, Lott S, Boland TM. Altering ewe nutrition in late gestation: I. The impact on pre- and postpartum ewe performance1. J Anim Sci 2015; 93:4860-72. [DOI: 10.2527/jas.2015-9019] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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McGovern FM, Campion FP, Sweeney T, Fair S, Lott S, Boland TM. Altering ewe nutrition in late gestation: II. The impact on fetal development and offspring performance1. J Anim Sci 2015; 93:4873-82. [DOI: 10.2527/jas.2015-9020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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McGovern FM, Nunes MJ, Raes F, Gonzales‐Jorge H. Marine and anthropogenic aerosols at Punta Del Hidalgo, Tenerife, and the aerosol nitrate number paradox. ACTA ACUST UNITED AC 2002. [DOI: 10.1029/2001jd000827] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- F. M. McGovern
- Environmental Protection Agency Richview, Dublin, Wexford Ireland
| | - M. J. Nunes
- CECUL, DQB, Faculty of Sciences University of Lisbon Lisbon Portugal
| | - F. Raes
- Environment Institute, EC Joint Research Centre Ispra Italy
| | - H. Gonzales‐Jorge
- Department of Physics University of LaLaguna Tenerife, Canary Islands Spain
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McGovern FM, Raes F, Van Dingenen R, Maring H. Anthropogenic influences on the chemical and physical properties of aerosols in the Atlantic subtropical region during July 1994 and July 1995. ACTA ACUST UNITED AC 1999. [DOI: 10.1029/1999jd900131] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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