Sammanfattning

The increased frequency of hot days due to climate change can potentially impair the environmental and economic performance of pig-fattening farms. Several pig-cooling strategies have been proposed to address these impacts, however their implementation is not always economically viable and the potential environmental-economic trade-offs not well understood. Here, we propose and implement a novel framework for environmental and economic evaluation of pig-cooling strategies in a whole farm context. We also demonstrate through a sensitivity analysis how such models can be integrated with projected climate data to investigate how climate change may affect the assessment of capital investments that are made over significant timescales. We considered two strategies implemented in a pig fattening farm in south Sweden: pig-cooling with showers and with increased air velocity. Operation of the farm under non-cooling conditions was considered as the baseline system against which the analysis was conducted. We calculated whole-farm annual equivalent values (AEV) with the implementation of each strategy through a discounted cash flow analysis and annualised system environmental impact through a life cycle assessment. Both cooling strategies significantly reduced system environmental impact across all categories except water footprint. Acidification potential was reduced the most, exhibiting a-3.28% reduction with pig showers and-1.51% with increased air velocity. Farm profitability improved by +6.79% with showers and +3.37% with increased air velocity. Ambient temperature increase under non-cooling conditions significantly increased all impact categories with acidification being affected the most (+2.24%), and caused a-4.43% decrease in AEV. Both pig-cooling strategies mitigated these effects on system environmental performance. With increased air velocity we observed a +0.718% increase in acidification, while pig showers were the more resilient option exhibiting a +0.690% increase. The study represents a case-in-point for how to rationalise economically environmental management technologies in pig housing systems based on their cost-effectiveness in mitigating environmental impacts.(c) 2021 Elsevier Ltd. All rights reserved.

Nyckelord

Pig cooling; Climate change; Economic assessment; Environmental impact; Life cycle assessment; Cost effectiveness

Publicerad i

Journal of Cleaner Production
2021, Volym: 290, artikelnummer: 125784
Utgivare: ELSEVIER SCI LTD

SLU författare

• Jeppsson, Knut-Håkan

  • Institutionen för biosystem och teknologi, Sveriges lantbruksuniversitet
    

• Olsson, Anne-Charlotte

  • Institutionen för biosystem och teknologi, Sveriges lantbruksuniversitet
    

Globala målen

SDG13 Vidta omedelbara åtgärder för att bekämpa klimatförändringarna och dess konsekvenser
SDG9 Bygga motståndskraftig infrastruktur, verka för en inkluderande och hållbar industrialisering samt främja innovation


UKÄ forskningsämne

Husdjursvetenskap


Publikationens identifierare

DOI: https://doi.org/10.1016/j.jclepro.2021.125784

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/111097