A new feeding study at the University of Wisconsin (UW) at Madison will compare Shredlage to conventionally processed corn silage produced from the same brown midrib (BMR) hybrid. So reported Randy Shaver, the UW Extension dairy scientist who also conducted the first university feeding trial on Shredlage.

“We’re seven weeks into the feeding program,” Shaver told forage operators attending the U.S. Custom Harvesters, Inc., Convention in early March.

“We had a 50-acre field of a BMR hybrid and made Shredlage with a new Claas self-propelled forage harvester equipped with a Shredlage processor” at a 2.5-mm roll gap. The chopper was set at a 26-mm theoretical length of cut (TLOC).

Once the Shredlage was bagged, those processor rolls were exchanged for Claas processor rolls set at a 2-mm roll gap and the chopper set at 19-mm TLOC to make a bag of conventionally processed BMR silage.

Along with lactation performance data, rumination data is being collected through electronic activity collars on 120 cows fed three different diets.

“The treatment I’m most excited about is where we drop some of the conventional corn silage and add some chopped dry hay into the TMR. We’re really looking at the effect of the fiber length in corn silage on chewing by the cow and physically effective NDF (neutral detergent fiber), if Shredlage makes any difference with BMR, and, then, how does hay (and corn silage) compare with conventional-processed corn silage and Shredlage.”

Results should be available this summer, he added.

Cornell University also has a supply of Shredlage ready for a study that’s just being formed, according to Larry Chase, Cornell animal scientist.

Wisconsin studies on packing densities comparing Shredlage with conventional corn silage have shown no differences between processing methods.

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