Wisconsin producers lower dietary phosphorus

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Recent surveys conducted on dairy herds in three Wisconsin counties indicate that phosphorus levels in dairy rations have decreased dramatically.

Results show that dietary phosphorus levels fed in the mid- to late-1990s in Kewaunee, Manitowoc and Fond du Lac counties averaged almost 0.53 percent. However, through educational efforts and ration changes, that figure now stands closer to the recommended level of 0.38 percent.

Analysis of TMR samples by AgSource Soil and Forage Laboratory in Bonduel, Wis., also shows that producers are committed to decreasing dietary phosphorus. Between 2001 and July 2004, phosphorus levels in samples submitted to the lab decreased 7.3 percent.

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