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Worksheet
Balancing Feed Rations
Topic #3041
Ashlee Gibson
Pigs
1. You’re feeding 20 lb baby pigs. Pigs this size need an 18% protein ration. You have
shelled corn which has 9% protein in it, but this is not enough protein. So, you decide to
mix soybean oil meal with the shelled corn. The soybean oil has 40% protein in it. Mix
the shelled corn and soybean oil meal together to come up with a 12% protein ration.
% Protein in Soybean meal
40
9 Parts soybean meal
18%
% Protein in Corn 9
22 Parts Corn
31 Total parts
A. If you are going to mix 100 pounds of feed, how much corn do you need?
70lbs
B. How much soybean meal do you need for 100 pounds of feed?
30 lbs
2. Your pigs are now 50 pounds and you need to change the protein content in their
ration. Now the ration must have 16% protein. You’re going to mix corn which has 9%
protein and soybean oil meal which has 40% protein in it. What will you do?
% Protein in Soybean meal
40
7 Parts soybean meal
16
55
%
% Protein in Corn 9
24 Parts Corn
31 Total parts
A. If you are going to mix a 100 lbs of feed how much corn do you need?
77
B. How much soybean oil meal do you need?
23
C. Does this feed ration have more corn or more soybean meal than in the previous
ration? Why?
THIS RATION HAS LESS SOYBEAN MEAL AND MORE CORN BECAUSE OF
THE DIFFERENCE IN OVERALL PROTEIN NEEDED. LESS PROTEIN IS
NEEDED IN THIS RATION THEREFORE MORE CORN
Sheep
3. You just bought a few lambs to raise as you SAE project. Now you have to develop a
balanced feed ration for them. The lambs need a 17% protein ration. You are going to
feed them alfalfa hay, which has 11% protein and oaks which have 10% protein.
Determine what you will need of each.
% Protein in Oats
6 Parts oats
10
17
%
% Protein in Alfalfa Hay 11
7 Parts Alfalfa Hay
_13 Total parts
A. If you are going to feed 100 lbs a week, how much hay do you need?
54
B. How many pounds of oats will you need?
46
C. If hay comes in 50 lb bales at $2.00 each how much money will you spend in hay if
you have the lambs for 14 weeks?
$32
Chicks
4. You are going to be feeding baby chicks for the broiler project. They need a 25%
protein ration. You will mix corn at 10% with soybean meal at 33%. Determine what you
will need.
% Protein in Soybean meal
33
15 Parts soybean meal
25
%
% Protein in Corn10
8_Parts Corn
23Total parts
A. To mix 75lbs of feed how much corn will you need?
How much soybean meal will you need?
B. If you are going to mix a ton of feed (2000lbs) how much corn do you need?
How much soybean meal do you need?