Feed Strategy - March 2018 - 46
46 ❙ FeedStrategy
Low-fat distillers grains reduce
milk fat depression
Under-used commodity in dairy diets helps producers avoid losses
he large expansion of the ethanol industry has
increased the supply of co-products for the
animal feed industry. Each metric ton of corn
processed in dry mill plants yields close to 300 kg of
distillers grains with or without solubles. Distillers
grains, either dried or wet, with or without solubles,
are the main feed co-products generated in the process,
although other co-products, such as condensed distillers solubles, are also available in the market.
Distillers grains are a good source of protein (>30
percent; ~55 percent of protein is undegradable in rumen) and energy (~0.9 Mcal net energy for lactation/
pound dry matter [DM]) for dairy cattle.
According to the Renewable Fuels Association
(RFA), distillers grains produced by U.S. dry mill
plants increased close to three times between 2006 and
2016, with the production estimated to total 12.0 million and 37.5 million metric tons, respectively, during
these years. Distillers grains use rates were 30 percent
for dairy and 44 percent for beef cattle in 2016.
Distillers grain in dairy feed
Despite a competitive price when compared with other
protein sources and their high availability in the market,
distillers grains are not always sought as a dietary ingredient by some nutritionists and dairy producers.
In a survey conducted in South Dakota, in which
28 percent of all Grade A dairy producers replied,
many confirmed they did not use distillers grains in
Studies show milk fat depression is an issue
in diets with conventional DDGS, but revealed
reduced risk with low-fat DDG inclusions.
www.WATTAgNet.com ❙ March 2018