Table 16.-Measures of Efficiency in Beef Production by Programs.
 Program Number
 Item 1 2 3
Percent calf crop weaned 87.6 85.4 90.0
Percent of brood cows sold
 as culled cowsb 12.0 12.0 12.0
Average weight per animal (lbs.)
 Calf when removed from pasture 508 511 514
 Cow when culled 1,112 1,112 1,091
Production of beef per acre (Ibs.)
 From calf 330 306 370
 From culled cow 98 93 105
Production of beef per cow (Ibs.)
 From calf 445 437 463
 From culled cow 133 133 131
Adjusted sales weights for beef
 produced (Ibs.)c
 From calf:
 Per acre 317 294 355
 Per cow 427 420 444
From culled cow sold:
 Per acre 94 89 101
 Per cow 128 128 126
aBased on percent calf crop weaned from all cows exposed on each program.
bIt was estimated that 15 percent of the cows in a commercial herd would be
culled each year; 12 percent would be sold as culled cows; and 3 percent
would die.
cGross weight was reduced by 4 percent to adjust for normal shrinkage in
marketing.

 Method Used to Show Value of Beef Produced
 and to Charge Items of Costs for Each Program
 Calculations were made of the estimated annual income and
expenses for each program based on the level of experimental
practices used. The value of beef produced was based on the
state average price of feeder calves grading Good at Florida
auction markets in September 1972. The value of beef for culled
cows was based on the price of slaughter cows grading Commer-
cial in August 1972. Price of beef for calves was adjusted for
variations in market grade score of calves on each program.
 Expenses included costs of maintaining pastures, supplemen-
tal feeds and minerals, breeding fees and other costs of main-
taining the cows. Charges for items purchased were those paid
by the Experimental Station for items used at the Beef Research
Unit during the 1971-72 season. Prices and costs rates used in
calculating income and expenses are shown in Table 17.