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Agricultural News


Glenn Selk: Reducing Hay Storage Losses

Tue, 20 May 2014 12:10:37 CDT

Glenn Selk:  Reducing Hay Storage Losses
Glenn Selk, Oklahoma State University Emeritus Extension Animal Scientist, writes in the latest Cow-Calf Newsletter:


The very dry spring (that most of Oklahoma has endured) points toward short hay production this summer and expensive hay feeding next winter. As hay is being cut and put in large round bales, it is very important this year to reduce hay storage losses.   University of Tennessee animal scientists conducted a trial to compare different methods of storing large round bales of grass hay. The hay was cut and baled in June in Moore County, Tennessee. The bales were weighed at the time of harvest and storage. Then they were weighed again the following January at the time of winter feeding. The following table lists the type of storage and the resulting percentage hay loss.


Table 1. Losses of hay stored using six methods of storage (Source: Dr. Clyde Lane, University of Tennessee Department of Animal Science)

Type of Storage               Percentage (%) of Hay Loss
On ground, no cover                 37%
On old tires, no cover              29%
On ground, covered                 29%
On old tires, covered                 8%
Net wrap on ground                19%
In barn                                             6%


Average spring, summer, and fall rainfall in Tennessee will generally be greater than that experienced in much of Oklahoma. However the rankings in storage loss between the storage methods will be present in Oklahoma as well.


An Oklahoma State University fact sheet by Dr. Ray Huhnke summarizes differences in storage loss that can be expected in an Oklahoma ranch setting. Source: Oklahoma Cooperative Extension Fact Sheet BAE-1716 "Round Bale Hay Storage".



Table 2. Percentage (%) dry matter loss of round hay bales.

                                                                Storage Period
Storage Method               Up to 9 months                                               12 - 18 months
Exposed
Ground                                                 5 - 20                                             15 - 50
Elevated                                              3 - 15                                               12 - 35
Covered
Ground                                                5 - 10                                               10 - 15
Elevated                                              2 - 4                                                  5 -10
Under roof                                          2 - 5                                                   3 - 10
Enclosed barn                                    Less than 2                                   2 -5


Obviously, it would be ideal to store the hay inside, but that will not often be practical. The next best option is when the hay is stored on something that gets the hay off of the ground under a rain shedding cover.



   



 

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