Calculating
205-day adjusted weights
 
Calculate Adjusted 205-day weight by first determining average daily gain (ADG). Subtract birth weight from current weight, divide the sum by days of age. 

Multiply ADG by 205, then re-add the birth weight. 

Adjust as follows: 
   

If dam is ... add for Male calf add for Female calf
  2 years old +60 lbs. +54 lbs.
  3 years old +40 lbs. +36 lbs.
  4 years old +20 lbs. +18 lbs.
  5 to 10 years old    0    0
11 years or over +20 lbs. +18 lbs.
   
The final sum is adjusted 205-day weight. 

Note:  To calculate weight ratios, divide the individual's adjusted 205-day weight by the average adjusted weight of his/her group of contemporaries, then multiply by 100.