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003			ZW-GwMSU
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008			241212b |||||||| |||| 00| 0 eng d
022			_a0021-8596
040			_aMSU _bEnglish _cMSU _erda
050	0	0	_aS3 JOU
100	1		_aYan, M.-J. _eauthor
245	1	0	_aEvaluation of process and input–output-based life-cycle assessment of Irish milk production _ccreated by M.-J. Yan, J. Humphreys and N. M. Holden
264	1		_aCambridge: _bCambridge University Press, _c2013.
336			_2rdacontent _atext _btxt
337			_2rdamedia _aunmediated _bn
338			_2rdacarrier _avolume _bnc
440			_aJournal of agricultural science _vVolume 151, number 5,
520	3		_aAgricultural specialists, particularly animal scientists, tend to use process-based life-cycle assessments (LCA), which describe the production system as a series of processes, to study the environmental impact of milk production based on their experimental data. Another approach called input–output (I–O) based LCA, which uses the economic transaction tables and national environmental accounts to determine the environmental impact triggered by final demand of milk production, is often less used due to data scarcity and higher uncertainty. In the current paper, process-based and I–O-based LCA models were developed to evaluate the greenhouse gas (GHG) and acidifying emissions from pasture-based milk production in Ireland. Process-based LCA found 1338·3 kg CO2 eq and 14·4 kg SO2 eq/t energy-corrected milk (ECM), and revealed details related to the farm management. The I–O based LCA found 1003·1 kg CO2 eq and 12·7 kg SO2 eq/tonne ECM and suggested that the agriculture, forestry and fishery (AFF) sector itself was largely responsible for the environmental impact of AFF products, rather than economic interaction with other sectors. The process-based LCA was found to be suitable for developing farm-scale sustainability strategies if variation of tactics across farms is provided, while the I–O based LCA offered potential sustainability guidance at the national scale. Further work is required to incorporate foreign production into the I–O table to account fully for imported goods and services. A detailed disaggregation within the AFF sector is also needed to gain a better understanding of the environmental sustainability of agricultural commodities. The present paper thus provides interesting results for the dairy industry, dairy researchers and LCA practitioners on further understanding of the environmental impact of milk production.
650			_aLife-cycle assessment _vGreenhouse gas emissions _xMilk production
700	1		_aHumphreys, J. _eco-author
700	1		_aHolden, N. M. _eco-author
856			_uhttps://doi.org/10.1017/S0021859613000257
942			_2lcc _cJA
999			_c168844 _d168844