World Grain - May 2023 - 40

FEED OPERATIONS
On the other hand, the average ether
Multiple studies have shown that there
are several ways to feed different types of
food waste and that it has the promising
possibility to be an effective feedstuff.
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extract content was 25% and crude
protein was 21% on a dry matter basis.
Fat and protein are two of the most
expensive nutrient components when
formulating diets. Food waste provides
more fat than conventional feedstuffs
such as ground corn and soybean meal
and its crude protein is greater than
corn and about half of soybean meal.
Oftentimes fiber is considered a negative
aspect when feeding monogastric
species and co-product ingredients
typically are associated with higher
concentrations of fiber. However, this
food waste only contained 7% neutral
detergent fiber on a dry matter basis,
which is less than reported values for
corn and soybean meal.
Beckman et al. also measured the
nutritional value of kitchen scraps
that were discarded. These were inedible
remnants of recipe ingredients
such as pepper stems, onion peels and
melon rinds. This form of food waste
had 15% more moisture and more than
double the amount of neutral detergent
fiber than the aforementioned waste
while having lower concentrations of
ether extract, crude protein, and metabolizable
energy. This nutrient profile
suggests that kitchen scraps might
be more ideal for ruminant species than
for monogastric species.
Concerns
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40
May 2023 / World Grain / World-Grain.com
There can be multiple concerns when
considering using food waste in diets.
Most notably are the potential nutrient
variability and the federal ban of feeding
any mammalian protein products
back to ruminant animals. The Food
and Drug Administration passed the
Modernization Act of 1997 banning
the use of mammalian protein products
to be fed back to ruminant animals in
an effort to avoid bovine spongiform
encephalopathy, also known as mad
cow disease. With the large range of
potential food that could constitute
food waste, it would be very difficult to
ensure that there was no trace of mammalian
product present.
However, there are exemptions to

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World Grain - May 2023

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