Use of life cycle assessment (LCA) to facilitate continuous improvement of on-farm environmental performance : a sheep dairy case study : a thesis presented in partial fulfilment of the requirements for the degree of Master of Business Studies in Management at Massey University, Manawatū, New Zealand
Loading...
Date
2018
DOI
Open Access Location
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Massey University
Rights
The Author
Abstract
Farm management practices have in recent times seen a shift towards a greater focus on sustainable
agriculture, concerning environmental impacts and food safety. In New Zealand, the sheep dairy
industry has seen rapid growth in the past decade as an alternative dairy source. The importance of
sustainability in this industry has been recognised with New Zealand government programmes such as
the Primary Growth Partnership, designed to boost the exports of the emerging industry, with a focus
on sustainable production. Utilising a Life Cycle Assessment (LCA) based environmental certification
scheme as a tool to support continuous improvement of on-farm environmental management can
potentially support the emerging sheep dairy industry to define and communicate the sustainability of
their farming practices.
This research aims to inform the practice of environmental labelling with application to sheep dairy
products and offer a way of validating the sustainability statements made by New Zealand sheep dairy
producers in their marketing approaches. The two key objectives of the study were (1) to determine
the environmental hotspots of New Zealand sheep dairy farming and what mitigation strategies can be
developed, and (2) Develop key performance indicators (KPIs) for an LCA-based farm certification
system focussed on sheep dairy in New Zealand. To address objective 1, an LCA study was
conducted on a New Zealand sheep dairy case-study farm. Sensitivity analysis around the type of
imported grain feed and pesticide used were also conducted. To address objective 2, a review was
conducting on four existing environmental certification schemes. Following this, a prototype list of
KPIs based on the LCA findings was then designed.
The LCA study utilised a cradle-to-farmgate boundary and included the following activities: livestock
emissions; the production and use of fertiliser, herbicides, and pesticides; production of imported
supplementary feed; production and use of fuels and electricity; and lastly emissions from milking
shed and effluent. The results showed that both the off-farm and on-farm stages contributed to
environmental impacts and the production and use of fertilisers, application of pesticides, and enteric
fermentation of livestock were found to be the biggest hotspot areas. A prototype environmental
certification scheme comprising a Tier 1 KPI framework was then formulated, combining both the
LCA results and previously consolidated indicators. Each KPI was categorised under the following
themes: land management, nutrient, pesticide, water management, and lastly, energy and carbon
management.
Description
Figures 1 & 2 have been removed for copyright reasons. They may be accessed from these links respectively: http://www.circularecology.com/lca.html & http://dx.doi.org/10.1016/j.scitotenv.2014.09.020
Keywords
Sheep Milking, New Zealand, Case studies, Environmental aspects, Sustainability, Evaluation, Sustainable agriculture, Certification