Wastes to profit: a circular economy approach to value-addition in livestock industries
Jerome Ramirez
A B F , Bernadette McCabe C , Paul D. Jensen D , Robert Speight A E , Mark Harrison A E , Lisa van den Berg A and Ian O’Hara A B
+ Author Affiliations
- Author Affiliations
A Centre for Agriculture and the Bioeconomy, Institute for Future Environments, Queensland University of Technology, Brisbane, Qld 4000, Australia.
B School of Mechanical, Medical and Process Engineering, Science and Engineering Faculty, Queensland University of Technology, Brisbane, Qld 4000, Australia.
C Centre for Agricultural Engineering, University of Southern Queensland, Toowoomba, Qld 4350, Australia.
D Advanced Water Management Centre, The University of Queensland, Brisbane, Qld 4072, Australia.
E School of Biology and Environmental Science, Science and Engineering Faculty, Queensland University of Technology, Brisbane, Qld 4000, Australia.
F Corresponding author. Email: j2.ramirez@qut.edu.au
Animal Production Science 61(6) 541-550 https://doi.org/10.1071/AN20400
Submitted: 30 July 2020 Accepted: 18 January 2021 Published: 15 February 2021
Journal Compilation © CSIRO 2021 Open Access CC BY-NC
Abstract
The livestock sector is a fundamental part of the modern global economy and provides food, clothing, furnishings, and various other products. So as to ensure its resilience to changes in consumer expectations, cost of production, and environmental sustainability, the sector must shift to a circular economy model. Current strategies to recover value from wastes and low-value co-products from livestock industries yield limited value; hence, new technologies are required to upgrade wastes and co-products, and generate high-value products that can feed into the livestock value chain. Anaerobic digestion can convert high organic-content waste to biogas for energy and a stable nutrient-rich digestate that can be used as fertiliser. Microbial technologies can transform wastes to produce nutritionally advanced feeds. New materials from waste can also be produced for livestock industry-specific applications. While aiming to add commercial value, the successful implementation of these technologies will also address the environmental and productivity issues that are increasingly valued by producers and consumers.
Keywords: adoption of technology, agricultural innovations.
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