Journal article
Evidence of animal productivity outcomes when fed diets including food waste: A systematic review of global primary data
Resources, conservation and recycling, v 203, 107411
Apr 2024
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
•Global food waste continues to increase despite efforts to reduce it.•Food waste upcycling to animal feed provides the greatest value among alternative uses.•Animals performed optimally in 75–77% of cases when fed diet containing food waste.•Prudent use of food waste can support optimal production and address sustainability issues.•Innovative policy and infrastructural support are essential for broader adoption and impact.
Enormous amounts of food waste are generated that could potentially be used for livestock feeding to support sustainable food production and reduce climate and resource burdens. Many studies have documented animal productivity parameters (growth, yield, feed use efficiency) when fed food waste, but their findings remain fragmented. Our objective is to synthesize results from these studies to uncover collective evidence on how animal productivity is affected. A systematic literature review identified 102 studies, which originated from 31 countries and encompassed all major food-producing animal species fed food waste of various types and rates. The field-based primary data were normalized to discern patterns and trends. Animals in 75–77 % of all cases performed as optimally or increased productivity compared to those fed control diet; the remaining 23–25 % had decreased performance. Meta-analysis of a subset of data indicated that pig growth did not differ between control and treatment diets of varying food waste rates. Ultimately, balancing major nutrients from all feed ingredients are key for maintaining optimal productivity while pursuing sustainability.
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Details
- Title
- Evidence of animal productivity outcomes when fed diets including food waste: A systematic review of global primary data
- Creators
- Yingcheng Wang - China Agricultural UniversitySarah Rassler - University of PennsylvaniaDarko Stefanovski - University of PennsylvaniaJoseph Bender - University of PennsylvaniaJonathan Deutsch - Drexel UniversityTing Chen - Zhejiang Gongshang UniversityZhenling Cui - State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, ChinaZhengxia Dou - University of Pennsylvania
- Publication Details
- Resources, conservation and recycling, v 203, 107411
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Food and Hospitality Management
- Web of Science ID
- WOS:001154480800001
- Scopus ID
- 2-s2.0-85182911080
- Other Identifier
- 991021889042204721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Engineering, Environmental
- Environmental Sciences