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Forage Extension Program
Winter Feeding Tips (Don’t Waste Your Hay)
By Dennis Cash, MSU Extension
Service 994-5688, dcash@montana.edu
"Since your winter feeding
program is likely your single largest ranch
expense, reducing hay waste can save you money."
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Winter range conditions were bare and dry through mid-December
across most of Montana. Since your winter feeding program
is likely your single largest ranch expense, reducing
hay waste can save you money. Hay losses at feeding
on most ranches averages about one fourth, but can easily
approach half. So that $70 per ton hay you bought now
costs you $140; or your cost of haying of $28 per ton
last summer becomes $56! By the time you read this article,
you may be deep into your winter hay feeding operation,
however there are some steps you can take to limit hay
waste.
During good haying conditions and with proper storage,
most losses to alfalfa or alfalfa-grass hays can be
minimized. Dense large round or rectangular bales are
widely used, but significant losses occur when these
are stacked in the open (Table 1). Hay sheds and tarps
are not widely popular in Montana due to their expense
or nuisance, except for a few cash hay producers not
willing to sacrifice 20% of their hay crop or risk spoilage.
Table 1. Dry matter (DM) losses of hay from field to
feeding (from Anderson and Mader)1 and economic
losses.
| |
Range
in
%DM loss
|
Average
%DM loss
|
Average
$ losses for a 200-cow operation feeding one ton
of hay per cow during winter ($65 hay) |
| Swathing with conditioner |
1-10
|
5 |
$650 |
| Raking |
5-20 |
10 |
$1300 |
| Plant respiration |
2-16 |
5 |
$650 |
Baling, % of windrow |
1-15
|
5 |
$650 |
Outside Storing, % of stack |
5-30
|
15 |
$1950 |
Inside Storing, % of stack |
2-12 |
5 |
$650 |
Transporting hay |
1-5 |
3 |
$390 |
| Fed in feed rack, % of stack or bale |
1-10 |
5 |
$650
|
| Fed on ground, % of stack or bale |
2-45 |
15 |
$1950
|
| Total, % of original standing crop |
10-80 |
35 |
$4550 |
1Without rain damage. Rainfall can reduce
DM yields as much as 20 percent.

Fig. 1 |
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For alfalfa hay, the losses in forage nutrient quality
may be even more extreme than those shown in Table 1
due to leaf shatter and loss. Hay losses can be very
costly when unrolling and feeding round bales on the
ground – up to 45% due to trampling, over consumption,
and fouling with manure or urine (Fig. 1). Bale feeders
or racks can usually be cost effective if you have the
equipment and patience to use them (Figs. 2 and 3).
Significant losses occur when cows have 24/7 access
to hay. Dry, pregnant mature cows will eat 20 to 30%
more hay than their daily needs if they are unrestricted,
plus waste increases. Daily (Table 2) or twice-daily
feeding of proper amounts of hay can reduce these losses.

Fig. 2 |
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Fig. 3 |
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Table 2. Hay wasted by cows when amount fed was controlled
in racks. (From W.H. Smith et al. 1974. ID-97. Purdue
Univ. Coop. Ext. Serv. W. Lafayette, IN., as cited by
Anderson and Mader).
| Feeding
system |
Hay per
cow per feeding, lb. |
Hay refused
or wasted, % |
Hay required
over rack feeding, % |
| Rack feeding on pasture |
--- |
5 |
--- |
| No-rack feeding on pasture
|
| - 1-day supply per feeding |
20 |
11 |
12 |
| - 2-day supply per feeding |
40 |
25 |
33 |
| - 4-day supply per feeding |
80 |
31 |
45 |
Regardless of how hay is fed, these losses will be
minimized if you can limit the amount of hay that is
accessible to trampling. Racks and round bale feeders
can effectively limit hay consumption and waste. In
a recent study at the NDSU Dickinson Research &
Extension Center, feeding cost per cow with round bales
was least expensive for a tapered-cone bale feeder,
followed by unrolling bales on the ground, then by using
a PTO-driven shredder to feed on the ground.
Reference:
“Management to Minimize Hay Waste” by Bruce
Anderson and Terry Mader (University of Nebraska Extension
Specialists) available in Great Plains Extension Beef
Cow-Calf Handbook MT1328, CL328) or on-line at: http://ianrpubs.unl.edu/range/g738.htm
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