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United States Department of Agriculture

Agricultural Research Service

Title: Dairy Phosphorus Considerations in Dairy Management

Authors
item Satter, Larry
item Powell, J Mark

Submitted to: Meeting Abstract
Publication Type: Experiment Station
Publication Acceptance Date: January 11, 2002
Publication Date: N/A

Technical Abstract: Reducing dietary P intake to recommended levels is an important practice for improving mutrient management on Wisconsin's dairy farms. A goal of dietary P management should be to avoid overfeeding of P which, in turn, avoids the increase in manure-P content. Over-feeding P increases the amount of land required for manure application if P-based manure spreading restrictions are in place. It also accelerates the build-up of soil test P levels of fields. By reducing P supplementation to recommend concentrations, feed costs, manure-P content, and the amount of land required for manure spreading could all potentially decrease on many dairy farms. However, the benefits of feeding P at recommended levels must be weighted against the price, convenience, and availability of the feed supplements currently in use on a farm. Many common and affordable protein and mineral supplements contain high levels of P. Livestock operations must consider the economic impacts associated with switching to alternative, low P, feed supplements.

Last Modified: 12/21/2014
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