FEEDING
DURING DROUGHT CONDITIONS
by
Robert L. Stewart, Extension Animal Scientist
The drought conditions in Georgia have forced many cattlemen to look for
alternate feeds. Unfortunately, they are faced with purchasing feed at
a time of year when the cattle normally have surplus grazing. Any money
spent is an added cost of production. Therefore, the costs need to be
kept as low as possible while providing adequate nutrition. The following
information should be helpful.
HAY REPLACERS
Cattlemen
who have no grazing or hay are faced with providing a complete ration
to their cattle. The following rations may be mixed to be fed free-choice
as a replacement for hay.
Ration (lbs./ton)
| Ingredient |
1 |
2 |
3 |
4 |
| Corn |
860
|
1000
|
400
|
400
|
| Whole Cottonseed |
|
|
500
|
|
| Soybean Meal |
140
|
|
|
|
| Broiler Litter |
|
|
|
1600
|
| Urea |
|
20
|
|
|
| Peanut Hulls |
1000
|
980
|
1100
|
|
|
TOTAL
FEED
|
2000
|
2000
|
2000
|
2000
|
|
Vitamin
A should be added to the above rations at the rate of 3.5 million
units per ton or provided in a good quality salt-mineral mix.
|
These are example
rations. The cost will vary, but will be between $60 and $100 per ton.
They can be mixed on the farm or custom mixed. For best results, the corn
should be cracked coarsely. The cottonseed may be blended whole. However,
separation may dictate grinding of seed. You may have other feed ingredients
available which will work equally as well. Contact your Extension Animal
Scientist for help when formulating rations.
SUPPLEMENTS
Cattlemen who have
limited grazing and/or hay will be able to provide adequate nutrition
by supplementing energy, protein and Vitamin A. Supplements which should
be considered are:
1. Range Cubes -
require no feed troughs, are convenient but expensive. Most feeding
programs call for 3 to 5 lbs./day, but more can be fed if needed.
2. Liquid Supplements
- are convenient but expensive. Most liquid feeds contain ingredients
that will limit daily consumption to 1-2 lbs/day. Additional feed may
be required if free-choice hay and/or grazing is not available. Do not
feed free-choice to starving cows. Do not feed
to cows eating soybean stubble.
3. Protein Blocks
- same as for liquid supplements.
4. Whole Cottonseed
(WCS) - are an excellent source of energy and protein. Apparently, there
is a fair supply of seed from last year's crop. Feed up to 5-6 lbs./day.
5. Custom Mixes
- will be the method of choice for many producers. Mixes should contain
approximately 20% crude protein and 65+% TDN.
Examples are:
|
% of Ration
|
| Ingredient |
Ration
1 |
Ration
2 |
| Corn |
74 |
88 |
| Soybean Meal |
26 |
10 |
| Urea |
|
2 |
|
100 |
100 |
| Add
3.5 million units of Vitamin A per ton of the above rations. |
Many other ingredients
may be used when custom-mixing supplements. Contact your Extension Animal
Scientist if you need assistance.
6. Self-Fed
Supplements - are designed to deliver the same nutrition as the ones in
section 5 with only minor changes.
The following rations are designed to supplement fair quality hay fed free-choice
or limited grazing. Formulations are based on the feed ingredients listed.
Substitutions for ingredients may require revision of formulas.
| I. Dry Cows |
w/o
Urea |
w/Urea |
| |
% |
% |
| Corn |
33 |
50 |
| Soybean Meal |
33 |
16 |
| Dicalcium Phosphate |
3 |
3 |
| Salt |
31 |
29 |
| Urea |
-- |
2 |
|
Expected
consumption: 2.5 - 3.5 lbs./day
|
| II. Lactating
Cows |
w/o
Urea |
w/Urea |
| |
% |
% |
| Corn |
40 |
59 |
| Soybean Meal |
40 |
20 |
| Dicalcium Phosphate |
2 |
2 |
| Salt |
18 |
16 |
| Urea |
--
|
3
|
|
Expected
consumption: 4.5 - 5.5 lbs./day
|
| III. Replacement
Heifers |
w/o Urea |
w/ Urea |
| |
% |
% |
| Corn |
55 |
67 |
| Soybean Meal |
28 |
14 |
| Dicalcium Phosphate |
3 |
3 |
| Salt |
14 |
14 |
| Urea |
-- |
2 |
|
Expected
consumption: 3-4 lbs./day
|
Notes:
(1) Provide
Vitamin A at the rate of 7,000 International Units per pound of feed (14
million units per ton).
(2) Cattle should
be hand-fed for one week prior to self-feeding in order to adjust to
these rations. This is most important with the urea-containing feeds.
(3) Do not feed
the urea-containing supplements to cattle which have access to soybean
stubble or hay. Death may result.
(4) Do not mix
more feed than can be consumed in 3-4 weeks.
OTHER CONSIDERATIONS
(1) Supplement
Vitamin A. Normally, summer forages which are actively growing
will provide plenty of Vitamin A. However, drought stressed forage may
be deficient. Make sure your salt-mineral mix is fortified with Vitamin
A. The minimum level suggested is 200,000 units per pound.
(2) Deworm.
Don't let internal parasites add an extra burden on your cows. Current
research indicates that the best time to deworm cows is mid-summer.
The parasite load in your cows is controlled and the chance for reinfection
is slim because of dry, hot weather.
(3) Grazing
Corn. Most dryland corn has been hurt severely. Cattlemen may
want to salvage the corn by grazing. Be advised that nitrates can be
a problem. A limited number of corn samples indicate that nitrate levels
are safe. However, the largest risk occurs one to three days after a
rain. If grazing corn and you get a rain, remove cows for three to five
days.
(4) Cull
Cows. Many cattlemen have saved extra heifers and/or kept a
few old cows ("just one more year"). The good moisture years of '91
and '92 have helped that strategy. However, we now see many operations
overstocked. A good rule of thumb is 3 acres for each cow. It is a good
time to rid yourself of the three O's (old, open and ornery).
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