Taking the projection at 61 days as an example, we will have:
✅ For projected weight based on average entry weight
- Projected weight based on AVERAGE ENTRY WEIGHT and average entry age is LESS than the projected weight age.
Average Weight Entry+ Gain Projected Weight (61 days)
✅ For projected weight based on average exit weight
If there are no recorded exits, we cannot project the weight, so the projected weight is zero.
- Projected weight based on AVERAGE EXIT WEIGHT and the average exit age is HIGHER than the age for weight projection.
Average Exit Weight - Gain Projected Weight (61 days)
Example: if I want to project the weight at 61 days and the average exit age is 70.6:
Assuming Average Exit Age > Projection Age, then I sum the ADG of the daily growth chart from day 62 to day 71 (only 60% of the value). The result is projected weight gain.
- Projected Weight Based on Average Exit Weight and Average Exit Age is LESS than Age for Projected Weight.
Average Exit Weight + Gain Projected Weight (61 days)
Example: if I want to project the weight at 61 days and the average age at exit is 57.45:
Assuming Average Exit Age < Projection Age, then sum the ADG from the daily growth table from day 58 (only 55% of the value) up to 61 days. The result is the projected weight gain.
If there were records of exits in the analyzed period and The average age of departure EQUALS the age for weight projection.
Projected weight equals ExitAverageWeight
Where:
AverageWeightEntry: It is the average weight of animals entering the phase or batch.
AverageExitWeight: It is the average output weight of the animals in the phase or batch.
ProjectedWeightGain: It is the projected weight gain based on the growth table defined for the farm.
(61 days): It is the value of days that I am using as a reference for the calculation. Here it can be 60 days, 58 days, 65 days, etc.