scholarly journals A partial life cycle assessment approach to evaluate the energy intensity and related greenhouse gas emission in dairy farms

2013 ◽  
Vol 44 (2s) ◽  
Author(s):  
Lelia Murgia ◽  
Giuseppe Todde ◽  
Maria Caria ◽  
Antonio Pazzona
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Energy Consumption ◽  
Milk Production ◽  
Environmental Sustainability ◽  
Greenhouse Gas Emission ◽  
Production Systems ◽  
Dairy Farms ◽  
Dairy Farming ◽  
Feeding Management

Dairy farming is constantly evolving towards more intensive levels of mechanization and automation which demand more energy consumption and result in higher economic and environmental costs. The usage of fossil energy in agricultural processes contributes to climate change both with on-farm emissions from the combustion of fuels, and by off-farm emissions due to the use of grid power. As a consequence, a more efficient use of fossil resources together with an increased use of renewable energies can play a key role for the development of more sustainable production systems. The aims of this study were to evaluate the energy requirements (fuels and electricity) in dairy farms, define the distribution of the energy demands among the different farm operations, identify the critical point of the process and estimate the amount of CO2 associated with the energy consumption. The inventory of the energy uses has been outlined by a partial Life Cycle Assessment (LCA) approach, setting the system boundaries at the farm level, from cradle to farm gate. All the flows of materials and energy associated to milk production process, including crops cultivation for fodder production, were investigated in 20 dairy commercial farms over a period of one year. Self-produced energy from renewable sources was also accounted as it influence the overall balance of emissions. Data analysis was focused on the calculation of energy and environmental sustainability indicators (EUI, CO2-eq) referred to the functional units. The production of 1 kg of Fat and Protein Corrected Milk (FPCM) required on average 0.044 kWhel and 0.251 kWhth, corresponding to a total emission of 0.085 kg CO2-eq). The farm activities that contribute most to the electricity requirements were milk cooling, milking and slurry management, while feeding management and crop cultivation were the greatest diesel fuel consuming operation and the largest in terms of environmental impact of milk production (73% of energy CO2-eq emissions). The results of the study can assist in the development of dairy farming models based on a more efficient and profitable use of the energy resources.

scholarly journals Life cycle analysis of raw milk production in Tunisia

2018 ◽  
Vol 5 (10) ◽  
pp. 249-258
Author(s):  
Amira Ghazouani ◽  
Naceur Mhamdi ◽  
Ibrahim-El-Akram Znaidi ◽  
Cyrine Darej ◽  
Norchene Guoiaa ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Energy Consumption ◽  
Milk Production ◽  
Life Cycle Analysis ◽  
Ghg Emissions ◽  
Dairy Farms ◽  
Raw Milk ◽  
Dairy Production ◽  
Ghg Emission

Life Cycle Assessment (LCA) is a tool to calculate greenhouse gas (GHG) emissions of dairy production. A survey was conducted in 20 dairy farms at the governorate of Sousse. The present study aimed to evaluate environmental impact of milk production at the farm regarding GHG emission and energy consumption. In the 20 dairy farms total GHG emissions resulted in a mean of 0.63 +/- 0.2 kg CH4/kg ECM and forage can contribute with a means 0.35 Le kg CO2eq/DM. The main reductions in GHG emissions per kg of FPCM started from 2,347 kg per cow per year and then the reduction slowed down to stabilize at around 6,127 kg FPCM per cow per year.

Using reference values to assess environmental sustainability of dairy farms

2011 ◽  
Vol 27 (3) ◽  
pp. 217-227 ◽  
Author(s):  
I. Acosta-Alba ◽  
M.S. Corson ◽  
H.M.G. van der Werf ◽  
P. Leterme
Keyword(s):  
Milk Production ◽  
Reference Values ◽  
Environmental Sustainability ◽  
Energy Use ◽  
Production Systems ◽  
Impact Category ◽  
Dairy Farms ◽  
Farming System ◽  
Agricultural Systems ◽  
Environmentally Sustainable

AbstractOne challenge for the environmental assessment of agricultural systems is to progress from estimating whether one farming system has fewer impacts than another to estimating whether or not it can be considered environmentally sustainable. To this end, we developed reference values (RVs) of farm emissions or energy use per hectare that defined hypothetical sustainability thresholds in each of three impact categories: climate change, water-quality degradation and non-renewable energy use. We applied one RV per category to the potential impacts (estimated by life-cycle assessment) of 45 French dairy farms to identify farms below RVs in each impact category and then evaluated their management and production characteristics. Seventeen of the 45 farms lie below at least one of the three RVs. Groups of farms below RVs had a higher percentage of organic farms, larger mean usable agricultural area, longer mean pasture residence time and lower mean inputs of concentrate feed and nitrogen than those above the same RVs. In consequence, the groups below RVs also tended to have lower mean milk production per cow and per hectare. All milk production systems can move toward environmental sustainability even though, according to production mode and intensity, some potential impacts are easier to reduce than others. Most farms were unable to attain the lowest RVs, suggesting that policy-makers may need to consider less ambitious RVs for existing agricultural systems. Otherwise, the distance between normative RVs and indicator values of dairy farms suggest that production and consumption of agricultural products will need to change if sustainability goals do not.

scholarly journals Evaluation of Water Scarcity Footprint for Taiwanese Dairy Farming

Animals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 956
Author(s):  
Wei-Tse Liao ◽  
Jung-Jeng Su
Keyword(s):  
Milk Production ◽  
Water Scarcity ◽  
Environmental Sustainability ◽  
Dairy Farms ◽  
Raw Milk ◽  
Dairy Farming ◽  
The Other ◽  
Policy Makers ◽  
Potential Impact ◽  
Central Taiwan

Raw milk production in Taiwan has increased year after year, which means that the environmental impact might also be intensified in certain regions. To balance both consumer demand and environmental sustainability, evaluating the potential impact and understanding the causal relationship between production and environment is imperative. This study applied the life cycle assessment (LCA) protocol to explore water consumption for raw milk production from cradle to farm gate of five dairy farms in Hsinchu County and evaluate the stress-weighted water scarcity footprint (WSF) as well as the water scarcity productivity (WSP) of the 16 Taiwanese counties and cities. Results indicated that the highest stress-weighted WSF of the dairy farms for raw milk production was located in northern and central Taiwan and was around 44.8 H2Oeq/kg fat- and protein-corrected milk (FPCM). On the other hand, both the smallest stress-weighted WSF (about 2.2 H2Oeq/kg FPCM) and the highest WSP (0.749 kg FPCM/m3 water) of the dairy farms were located in Nantou and Chiayi Counties, because these two counties were the least water-stressed regions in Taiwan. The achievement of this study could be the first and important reference for the sustainable production of raw milk and optimizing the industrial policy of dairy farming by policy makers.

scholarly journals Environmental Sustainability in Beef Production and Life Cycle Assessment as a Tool for Analysis

2020 ◽  
Vol 6 (1) ◽  
pp. 11-25
Author(s):  
Pedro Henrique Presumido ◽  
Fernando Sousa ◽  
Artur Gonçalves ◽  
Tatiane Cristina Dal Bosco ◽  
Manuel Feliciano
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Sustainability ◽  
Environmental Performance ◽  
Production Systems ◽  
Meat Production ◽  
Beef Production ◽  
Conservation Of Natural Resources ◽  
Intuitive Method ◽  
The Impact

The sustainability of meat production systems has been highlighted by the impact on the environment and the conservation of natural resources. The aim of this manuscript is to provide a specific review of the environmental sustainability of beef production in a life cycle assessment (LCA) context. Questions about the main environmental impacts caused by beef production were discussed. The phases of the LCA were detailed as well as the main functional units, boundaries of the systems and categories of impacts used in recent studies. LCA is a fast, easy and intuitive method that correlates human activities and their environmental performance in different sectors, such as beef production.

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