Agriculture and Agri-Food Canada. (2017). Nitrous Oxide – Agriculture and Agri-Food Canada (AAFC). Retrieved July 8, 2019, from

AHDB. (2019a). Cheddar-Filling the Brexit void. Retrieved May 18, 2019, from

AHDB. (2019b). Cow Numbers. Retrieved May 15, 2019, from

Aragón-Durand, F., Cramer, W., Humphreys, S., Kainuma, M., Kala, J., Mahowald, N., … Zickfield, K. (2018). IPCC Special Report 2018 – Chapter 1 – Framing and Context. In IPCC SPECIAL REPORT Global Warming of 1.5 oC. Retrieved from

Borchers, M. R., & Bewley, J. M. (2015). An assessment of producer precision dairy farming technology use, prepurchase considerations, and usefulness. Journal of Dairy Science, 98(6), 4198–4205.

Broekema, R., & Kramer, G. (2014). LCA of Dutch semi-skimmed milk and semi-mature cheese.

Byskov, M. V., Fogh, A., & Løvendahl, P. (2017). Genetic parameters of rumination time and feed efficiency traits in primiparous Holstein cows under research and commercial conditions. Journal of Dairy Science, 100(12), 9635–9642.

Cederberg, C., & Stadig, M. (2003). System Expansion and Allocation in Life Cycle Assessment of Milk and Beef Production. International Journal of Life Cycle Assessment, 8(6), 350–356.

Chadwick, D. R., Cardenas, L. M., Dhanoa, M. S., Donovan, N., Misselbrook, T., Williams, J. R., … Rees, R. M. (2018). The contribution of cattle urine and dung to nitrous oxide emissions: Quantification of country specific emission factors and implications for national inventories. Science of the Total Environment, 635, 607–617.

Crowley, S. V., O’Mahony, J. A., Fox, P. F., Park, Y. W., Huppertz, T., Gazi, I., … Ferguson, J. D. (2017). Achieving sustainable production of milk Volume 1. In N. van Belzen (Ed.), International Dairy Federation (1st Editio, Vol. 1).

Dairy UK. (2017). The White Paper. Retrieved May 15, 2019, from

Dalgaard, R., Schmidt, J., Halberg, N., Christensen, P., Thrane, M., & Pengue, W. A. (2008). LCA for soybean meal. LCA for Food Products, 10(7), 240–254.

Department for Environment Food and Rural Affairs. (2019). Usage of milk by dairies in the United Kingdom – January 2019. Retrieved from

Dowling, C., Curran, T., & Lanigan, G. (2008). The effect of application timing on ammonia emissions from cattle slurry in Ireland. In 13th Int. RAMIRAN Proceedings. Dublin.

Espírito-Santo, M. M., Leite, M. E., Silva, J. O., Barbosa, R. S., Rocha, A. M., Anaya, F. C., & Dupin, M. G. V. (2016). Understanding patterns of land-cover change in the Brazilian Cerrado from 2000 to 2015. Philosophical Transactions of the Royal Society B: Biological Sciences, 371(1703), 20150435.

European Commission. (1999). Report on Public Health Aspects of the Use of Bovine Somatotrophin – 15- 16 March 1999. Retrieved from

Fitton, N., Bindi, M., Brilli, L., Cichota, R., Dibari, C., Fuchs, K., … Snow, V. (2019). Modelling biological N fixation and grass-legume dynamics with process-based biogeochemical models of varying complexity. European Journal of Agronomy, 106(March), 58–66.

Flores, J., García, J. E., Mellado, J., Gaytán, L., De Santiago, Á., & Mellado, M. (2019). Effect of growth hormone on milk yield and reproductive performance of subfertile Holstein cows during extended lactations. Spanish Journal of Agricultural Research, 17(1), 2–9.

Food and agriculture organization. (2018). Global Livestock Environmental Assessment Model (GLEAM) | Food and Agriculture Organization of the United Nations. Retrieved July 24, 2019, from

Food and Agriculture Organization. (2015). Global Dairy and GHG Emissions.

Guerci, M., Bava, L., Zucali, M., Sandrucci, A., Penati, C., & Tamburini, A. (2013). Effect of farming strategies on environmental impact of intensive dairy farms in Italy. Journal of Dairy Research, 80(3), 300–308.

Hoegh-Guldberg, O., D. Jacob, M. Taylor, M. Bindi, S. Brown, I. Camilloni, A. Diedhiou, R. Djalante, K.L. Ebi, F. E., & J.Guiot, Y. Hijioka, S. Mehrotra, A. Payne, S.I. Seneviratne, A. Thomas, R. Warren,  and G. Z. (2018). IPCC Special Report 2018 – Chapter 3 – Impacts of 1.5oC Global Warming on Natural and Human Systems. In IPCC SPECIAL REPORT Global Warming of 1.5 oC. Retrieved from

Hollander, A., Temme, E. H. M., & Zijp, M. (2017). The environmental sustainability of the Dutch diet Background report to ‘ What ’ s on our. In National Institute for Public Health and the Environment.

Hristov, A. N., Oh, J., Lee, C., Meinen, R., Montes, F., Ott, T., … Oosting, S. (2013). Mitigation of greenhouse gas emissions in livestock production: A review of technical options for non-CO 2 emissions. Food Agriculture Organisation. Retrieved from

Hurley, A. M., Lopez-Villalobos, N., McParland, S., Lewis, E., Kennedy, E., O’Donovan, M., … Berry, D. P. (2018). Characteristics of feed efficiency within and across lactation in dairy cows and the effect of genetic selection. Journal of Dairy Science, 101(2), 1267–1280.

Intergovernmental Panel on Climate Change. (2006). N2O Emissions From Managed Soils, and CO2 Emissions From Lime and Urea application In:2006 IPCC Guidelines for National Greenhouse Gas Inventories (Vol. 4). Retrieved from

International dairy federation. (2016). Carbon Footprint – IDF. Retrieved May 19, 2019, from

International Organization for Standardization. (2006). Environmental management – Life cycle assessment – Requirements and guidelines (ISO 14044:2006).

Johansen, M., Lund, P., & Weisbjerg, M. R. (2018). Feed intake and milk production in dairy cows fed different grass and legume species: A meta-analysis. Animal, 12(1), 66–75.

Kristensen, T., Mogensen, L., Knudsen, M. T., & Hermansen, J. E. (2011). Effect of production system and farming strategy on greenhouse gas emissions from commercial dairy farms in a life cycle approach. Livestock Science, 140(1–3), 136–148.

Laboski, C. A. M., Jokela, W., & Andraski, T. W. (2013). Dairy Manure Application Methods: N Credits, Gaseous N Losses, and Corn Yield. Wisconsin Crop Management Conference, 52, 20–31.

Lee, M. A., Todd, A., Sutton, M. A., Chagunda, M. G. G., Roberts, D. J., & Rees, R. M. (2017). A time-series of methane and carbon dioxide production from dairy cows during a period of dietary transition. Cogent Environmental Science, 3(1), 1–14.

Leinonen, I., MacLeod, M., & Bell, J. (2018). Effects of Alternative Uses of Distillery By-Products on the Greenhouse Gas Emissions of Scottish Malt Whisky Production: A System Expansion Approach. Sustainability, 10(5), 1473.

Lüscher, A., Mueller-Harvey, I., Soussana, J. F., Rees, R. M., & Peyraud, J. L. (2014). Potential of legume-based grassland-livestock systems in Europe: A review. Grass and Forage Science, 69(2), 206–228.

Mackenzie, S. G., Leinonen, I., & Kyriazakis, I. (2017). The need for co-product allocation in the life cycle assessment of agricultural systems—is “biophysical” allocation progress? International Journal of Life Cycle Assessment, 22(2), 128–137.

March, M. D., Toma, L., Stott, A. W., & Roberts, D. J. (2016). Modelling phosphorus efficiency within diverse dairy farming systems – Pollutant and non-renewable resource? Ecological Indicators, 69, 667–676.

March, M.D., Haskell, M. J., Chagunda, M. G. G., Langford, F. M., & Roberts, D. J. (2014). Current trends in British dairy management regimens. Journal of Dairy Science, 97(12), 7985–7994.

March, Margaret D., Shalloo, L., Roberts, D. J., & Ryan, W. (2017). Financial evaluation of Holstein Friesian strains within composite and housed UK dairy systems. Livestock Science, 200(February), 14–22.

Maroti, G., & Kondorosi, E. (2014). Nitrogen-fixing Rhizobium-legume symbiosis: are polyploidy and host peptide-governed symbiont differentiation general principles of endosymbiosis? Frontiers in Microbiology, 5, 326.

McGuire, D. L., Bohnert, D. W., Schauer, C. S., Falck, S. J., & Cooke, R. F. (2013). Daily and alternate day supplementation of urea or soybean meal to ruminants consuming low-quality cool-season forage: I-Effects on efficiency of nitrogen use and nutrient digestion. Livestock Science, 155(2–3), 205–213.

Mohammadi, A., Rafiee, S., Jafari, A., Dalgaard, T., Knudsen, M. T., Keyhani, A., … Hermansen, J. E. (2013). Potential greenhouse gas emission reductions in soybean farming: A combined use of Life Cycle Assessment and Data Envelopment Analysis. Journal of Cleaner Production, 54, 89–100.

Moumen, A., Azizi, G., Chekroun, K. Ben, & Baghour, M. (2016). The effects of livestock methane emission on the global warming: a review. International Journal of Global Warming, 9(2), 229.

NFU Scotland. (2017). NFU Scotland | Scottish Farming Facts | The National Farmers Union. Retrieved August 20, 2019, from

NFU Scotland. (2018). NFU Scotland | Scottish Farming Facts | Farming and the Food Supply Chain. Retrieved May 15, 2019, from

Olivares, J., Bedmar, E. J., & Sanjuán, J. (2013). Biological Nitrogen Fixation in the Context of Global Change. Molecular Plant-Microbe Interactions, 26(5), 486–494.

Pollott, G. E., & Coffey, M. P. (2008). The Effect of Genetic Merit and Production System on Dairy Cow Fertility, Measured Using Progesterone Profiles and On-Farm Recording. Journal of Dairy Science, 91(9), 3649–3660.

Ponsien, T. (2015). Finding Your Way In Allocation Methods | PRé Sustainability. Retrieved July 9, 2019, from

Q-PorkChains. (2017). System expansion and allocation. Retrieved May 20, 2019, from

Raga Mexico, G., Nakajima, T., Ramanathan, V., Ramaswamy, V., Artaxo, P., Berntsen, T., … Averyt, K. (2007). Changes in Atmospheric Constituents and in Radiative Forcing. In IPCC. Retrieved from

Rauw, W. M., & Gomez-Raya, L. (2015). Genotype by environment interaction and breeding for robustness in livestock. Frontiers in Genetics, 6(OCT), 1–15.

Reay, D. S., Davidson, E. A., Smith, K. A., Smith, P., Melillo, J. M., Dentener, F., & Crutzen, P. J. (2012). Global agriculture and nitrous oxide emissions. Nature Climate Change, 2(6), 410–416.

Rice, P., O’Brien, D., Shalloo, L., & Holden, N. M. (2017). Evaluation of allocation methods for calculation of carbon footprint of grass-based dairy production. Journal of Environmental Management, 202, 311–319.

Roca-Fernández, A. I., Peyraud, J. L., Delaby, L., & Delagarde, R. (2016). Pasture intake and milk production of dairy cows rotationally grazing on multi-species swards. Animal, 10(9), 1448–1456.

Rogelj, J., Shindell, D., Jiang, K., Fifita, S., Forster, P., Ginzburg, V., … Vilarino, M. V. (2018). IPCC Special Report 2018 – Chapter 2 – Mitigation Pathways Compatible With 1.5°C in the Context of Sustainable Development. In IPCC SPECIAL REPORT Global Warming of 1.5 oC. Retrieved from

Ross, S. A., Topp, C. F. E., Ennos, R. A., & Chagunda, M. G. G. (2017). Relative emissions intensity of dairy production systems: employing different functional units in life-cycle assessment. Animal, 11(8), 1381–1388.

Ross, Stephen A., Chagunda, M. G. G., Topp, C. F. E., & Ennos, R. (2014). Effect of cattle genotype and feeding regime on greenhouse gas emissions intensity in high producing dairy cows. Livestock Science, 170, 158–171.

Ross, Stephen A., Ennos, R., Topp, C. F. E., & Chagunda, M. G. G. (2015). Life Cycle Assessment of high producing dairy production systems: do functional units matter? Advances in Animal Biosciences, 6(2), 55–281.

SAC Consulting. (2019). Home Page – AgRE Calc. Retrieved July 10, 2019, from

Sajeev, E. P. M., Amon, B., Ammon, C., Zollitsch, W., & Winiwarter, W. (2018). Evaluating the potential of dietary crude protein manipulation in reducing ammonia emissions from cattle and pig manure: A meta-analysis. Nutrient Cycling in Agroecosystems, 110(1), 161–175.

Salvador, S., Corazzin, M., Piasentier, E., & Bovolenta, S. (2016). Environmental assessment of small-scale dairy farms with multifunctionality in mountain areas. Journal of Cleaner Production.

Sasu-Boakye, Y., Cederberg, C., & Wirsenius, S. (2014). Localising livestock protein feed production and the impact on land use and greenhouse gas emissions. Animal, 8(8), 1339–1348.

Scottish dairy cattle association. (2019). Challenges for Scottish Dairy Herds but still cows increase. Retrieved from press release July 2019.pdf

Scottish government. (2018). Scottish greenhouse gas emissions 2016. Retrieved July 5, 2019, from

Scottish government. (2019). Climate Change action. Retrieved July 22, 2019, from

Scottish Government. (2018). Economic Report on Scottish Agriculture. Retrieved July 1, 2019, from

Thilakarathna, M. S., McElroy, M. S., Chapagain, T., Papadopoulos, Y. A., & Raizada, M. N. (2016). Belowground nitrogen transfer from legumes to non-legumes under managed herbaceous cropping systems. A review. Agronomy for Sustainable Development, 36(4), 58.

Toma, L., March, M., Stott, A. W., & Roberts, D. J. (2013). Environmental efficiency of alternative dairy systems: A productive efficiency approach. Journal of Dairy Science, 96(11), 7014–7031.

Vellinga, T. V., & de Vries, M. (2018). Effectiveness of climate change mitigation options considering the amount of meat produced in dairy systems. Agricultural Systems, 162(January), 136–144.

Wageningen Livestock Research, & Blonk Milieu Advies. (2019). Download FeedPrint NL. Retrieved July 10, 2019, from

Wall, E. (2018). Breeding the future dairy cow. Retrieved July 10, 2019, from

Zehetmeier, M., Gandorfer, M., Hoffmann, H., Müller, U. K., De Boer, I. J. M., & Heißenhuber, A. (2014). The impact of uncertainties on predicted greenhouse gas emissions of dairy cow production systems. Journal of Cleaner Production, 73, 116–124.