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Calcimator

Feed Ration Calculator

Calculate daily feed ration requirements based on animal weight, species, activity level, and target daily gain. Estimates forage and concentrate split, crude protein, and TDN needs.

Inputs

lbs
lbs/day

Results

Total Dry Matter Intake

40.8 lbs/day

Forage Intake24.5 lbs/day
Concentrate Intake16.3 lbs/day
Crude Protein Needed4.9 lbs/day
TDN Required26.5 lbs/day
DMI as % of Body Weight4.08%
SpeciesCattle
How to Use This Calculator
  1. Enter the animal class (cow-calf, stocker, finishing steer) and current body weight.
  2. Set the desired average daily gain (ADG) in pounds.
  3. Input the feed ingredients and their as-fed percentages and nutrient analysis.
  4. Review the calculated ration providing target TDN, CP, and energy for the specified ADG.
  5. Adjust ingredient proportions to balance the ration within budget constraints.

How the result changes with Animal Weight

Animal WeightTotal Dry Matter Intake
30920.9 lbs/day
1,05742.4 lbs/day
1,95468.2 lbs/day
2,70189.7 lbs/day

What each input means

Animal Weight
Current live weight of the animal in pounds.
Species
1 = Cattle, 2 = Hog, 3 = Sheep.
Activity Level
1 = Sedentary, 2 = Moderate, 3 = Active (e.g., grazing on pasture).
Target Daily Gain
Desired weight gain per day in pounds.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Animal Weight = 1000, Species = 1, Activity Level = 2, Target Daily Gain = 2 = 4 input(s) provided
  2. Calculate Total Dry Matter Intake
    Total Dry Matter Intake
    40.8 = 40.8
  3. Calculate Forage Intake
    Forage Intake
    24.5 = 24.5
  4. Calculate Concentrate Intake
    Concentrate Intake
    16.3 = 16.3

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