Keeping Dairy Rations Balanced this Winter will be a Challenge

Most years, when a dairy producer has their ration balanced for the new corn silage crop, very few and minor adjustments are then made throughout the winter to ensure the proper nutrient levels are being provided to meet production goals. Normally the most often tweak that must be made is due to variations of dry matter percentage of the different fields harvested.
This year’s silage crop brought mixed results, early planted corn that developed very poor and in some case no ears while later planted corn developed good ears with short stalks. This has translated into local corn silage sample testing from 6% to 12% crude protein and net energy lactation levels ranging from .49 to .75 Mcal/Lb.
The best strategy to deal with this year’s corn silage will be to test and test often. As different fields are fed and in some cases different parts of the field are fed, nutrient levels provided will be variable. Keep a close eye for key indicators that the corn silage quality may be changing. A reduction or increase in MUN (milk urea nitrogen) levels indicate either a change in protein levels or energy levels. Reduced intakes will generally be a result of feeding dryer corn silage or an increase in fiber levels. Increased intakes will be seen when the corn silage becomes higher in moisture or fiber levels drop. Take note of any of the occurrences and communicate them to your nutritionist.
Free forage testing and ration balancing services are provided through the Adair County Cooperative Extension for any farmer who would like assistance. For more information, call the Extension Office at 384-2317.
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