Simmental adds $ indices

Cattle Market & Farm Reports, Editorials
Mar 7, 2005
by WLJ
The American Simmental Association (ASA) has added dollar indices to its Spring 2005 Sire Summary. Working with USDA geneticist, Dr. Mike MacNeil, ASA blended EPDs with five years of economic data on prices and costs to predict the dollar differences between sires when used in a commercial operation.
Terminal Index (TI) is designed for evaluating sires’’ economic merit in situations where they are bred to mature Angus cows and all offspring are placed in the feedlot and sold grade and yield. Consequently, maternal traits such as milk, stayability and maternal calving ease are not considered in the index.
The All-Purpose Index (API) evaluates sires being used on the entire cow herd (bred to both Angus first-calf heifers and mature cows) with a portion of their daughters being retained for breeding and the remaining heifers and steers being put on feed and sold grade and yield. All EPDs, with the exception of tenderness, are taken into consideration in this index.
The indices calculate the estimated differences between bulls in net dollars returned per cow exposed. For example, a bull with a +23 and +1 for TI and API would be expected to return $23 and $1 more per cow exposed than a bull with a 0 for both indexes. Besides being a tool to improve seedstock, commercial producers can use these indices to determine how much a bull is worth. Or, put another way, how much they can pay for one bull compared to another. For example, when buying a terminal sire, a producer can quickly figure a bull scoring +30 for TI is worth an extra $3,600 over a $0 bull if both are exposed to 30 cows over 4 years ($30 x 30 head x 4 years = $3,600).
For more information visit ASA’s web site at, or contact Dr. Wade Shafer at 406/587-4531. — WLJ