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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).
UGA CAES Drought Information
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