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Meat's taste unchanged when distiller's grains are fed Tuesday, January 23, 2007
Agri News staff writer
MINNEAPOLIS -- Some in the pork industry at Minnesota Pork Congress were worried about how pork from hogs fed with distiller's grains tastes.
Jerry Shurson of the University of Minnesota Department of Animal Science said a taste panel found no difference in tenderness, juiciness and taste of pork from hogs fed with distiller's grains and those not.
Shurson spoke at the Minneapolis Convention Center about three studies researching feeding DDGs in grow-finish systems.
During the first study -- at U of M's West Central Research and Outreach Center at Morris, Shurson said researchers did a "worst-case scenario."
The pigs were fed corn oil and 4 percent soybean oil in addition to DDGs at levels of 0 percent, 10 percent, 20 percent and 30 percent in the ration.
The hogs fed at 0 and 10 percent had no difference in their average daily gain, but the average daily gain dropped off for hogs fed 20 and 30 percent DDGs.
The carcass yield declined slightly with increased DDG intake in hogs, Shurson said.
"We will always see a slight reduction," he said. "Carcass lean didn't really change."
Shurson said the concern of the industry is the impact feeding DDGs will have on belly thickness and firmness. It takes feeding 30 percent to make a significant impact on firmness and thickness of belly fat, he said.
In the second study, U of M researchers compared results from two 1,000-head finishing barns from Land O' Lakes producers.
The hogs in barn A were fed a typical corn diet. The hogs in barn B were fed a similar ration with 10 percent DDGs.
"Essentially gain was identical," Shurson said.
He said the study wouldn't have much impact because producers can put 10 percent of anything in a ration without much impact.
Shurson said the real motive in that study was to look at the pork fat. With Japanese pork fat standards, there's no color difference between the two groups of hogs. There was a slight melting difference.
In the third study, 16 pens were used for each feed group - 0, 10, 20 and 30 percent of DDGs in the ration.
Shurson said gain stayed at about two pounds per day for each group and feed conversion got better.
He said there was a slight trend of reduction of back fat. Loin firmness was linearly reduced with higher inclusion of DDGs, but Shurson attributes that to less marbling. |
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