Ogwu Matthew C, Hills Catherine E, Pietrosemoli Silvana
Goodnight Family Department of Sustainable Development Appalachian State University Living Learning Center 305 Bodenheimer Drive Boone NC 28608 USA.
Alternative Swine Research and Extension Project Department of Animal Science 319A Polk Hall, Campus Box 7621 Raleigh NC 27696 USA.
Glob Chall. 2025 Jul 16;9(8):e00073. doi: 10.1002/gch2.202500073. eCollection 2025 Aug.
The increasing global population and concomitant rise in food demand lead to significant challenges in sustainable agricultural practices and food waste management. This review explores a promising solution to these challenges by examining the potential of utilizing food waste in hog farming as a sustainable feed resource. The paper highlights the environmental, economic, and social benefits of diverting food waste from landfills and repurposing it for livestock nutrition. Nutritional adequacy, safety, and regulatory frameworks surrounding the use of food waste in hog diets, as well as technological advancements and logistical considerations necessary for the widespread adoption of this practice, are discussed along with pilot projects that have successfully implemented food waste feeding programs, assessing their outcomes in terms of feed efficiency, animal health, and environmental impact. Using food waste as animal feed provides a cost-effective alternative to traditional feedstuffs. It also contributes to the global goal of reducing the food, land, and greenhouse gas (GHG) mitigation gaps by 12%, 27%, and 15%, respectively, by 2050. This practice will significantly lower the carbon footprint of hog farming by redirecting 45% of GHG emissions from conventional feed production to promote a circular economy within the agricultural sector. However, successfully implementing food waste feeding programs requires stringent monitoring and adherence to safety standards to prevent contamination and ensure animal welfare.
全球人口的不断增长以及随之而来的粮食需求增加，给可持续农业实践和食物垃圾管理带来了重大挑战。本综述通过研究在生猪养殖中利用食物垃圾作为可持续饲料资源的潜力，探索应对这些挑战的一个有前景的解决方案。本文强调了将食物垃圾从垃圾填埋场转移出来并将其重新用于牲畜营养的环境、经济和社会效益。讨论了生猪日粮中使用食物垃圾的营养充足性、安全性和监管框架，以及广泛采用这种做法所需的技术进步和物流考虑因素，同时还介绍了成功实施食物垃圾喂养计划的试点项目，并从饲料效率、动物健康和环境影响方面评估了它们的成果。将食物垃圾用作动物饲料为传统饲料原料提供了一种经济高效的替代方案。它还有助于实现到2050年分别将食物、土地和温室气体（GHG）减排差距缩小12%、27%和15%的全球目标。这种做法将通过将45%的温室气体排放从传统饲料生产中转移出来，显著降低生猪养殖的碳足迹，以促进农业部门的循环经济。然而，成功实施食物垃圾喂养计划需要严格的监测并遵守安全标准，以防止污染并确保动物福利。
