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Abstract
Feeding of food waste remains a common practice in many parts of the U.S. and around
the world. Food waste comprises about 8.9% of the Municipal Solid Waste (MSW) stream
but may cause a substantial proportion of the disposal costs due to odors, gas production,
and rodent control at landfills. Because food waste is often of a very high nutritional
value, it may be fed to livestock. Texas, Florida, and New Jersey are the leading
states disposing of the greatest amount of food waste as livestock feed. This waste
is composed primarily of food and table plate waste, vegetable and food processing
waste, bakery waste, and waste from dairy product and egg processing. The 1980 Swine
Health Protection Act requires that all table waste fed to swine be cooked at boiling
temperature (l00 °C) for 30 min prior to feeding. This is the minimum requirement in all states, although some
states have banned its use altogether. The cooking methods currently approved by the
USDA-Animal and Plant Health Inspection Service (USDA-APHIS) are either a steam cooking
method or a direct fire cook. The requirement for cooking is meant to eliminate the
possibility that any foreign animal diseases (Hog Cholera, Foot and Mouth Disease,
Africa Swine Fever, and Swine Vesicular Disease) would infect swine or that any infectious
organisms of public health significance (Salmonella, Campylobacter, Trichinella, and
Toxoplasma) might potentially be transferred to humans. There are currently no federal
requirements regulating the feeding of food waste to ruminants. Recent research has
indicated that food waste generally has high nutritive quality (CP> 20%, Fat> 20%) and that it can make a nutritious animal feed. There is a need for more contemporary
feeding and nutrition information, because much of the research done with food waste
was done in the 1960s or earlier. In addition, development of modern processing methods
might eliminate some of the problems and stigma traditionally associated with this
practice. We conclude that feeding food waste to livestock can be an effective recycling
practice, result in a more efficient resource utilization, and contribute to the overall
goal of sustainability.
Key Words
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Article info
Footnotes
Reviewed by L. J. Boyd and J. E. Oldfield.
Identification
Copyright
© 1996 American Registry of Professional Animal Scientists. Published by Elsevier Inc. All rights reserved.