Simmental Guide to EPDS www.simmental.org
BELOW IS A QUICK REFERENCE TO AN EXPLANATION OF EPD’S: Expected Progeny Differences “EPD’s” are the most accurate and ef- fective tool available for comparing genetic levels. In using the EPD differences between two sires EPD’s represents the unit difference ex- pected in the performance of their progeny. (Listed below are the units ASA EPD’s are expressed in). kidney, pelvic and heart fat. 3) hot carcass weight 4) rib eye area. A (–) EPD is better. Marbling (MRB) marbling score.
Indexes: The last two columns in the EPD section are fairly new to the Simmental breed, but interesting, they are $ indexes. Though EPD’s allow for the comparison of genetic levels for many economi- cally important traits, they only provide a piece of the economic puz- zle. That’s where $ indexes blend EPD’s & economics to estimate an animal’s overall impact on your bottom line. All Purpose Index: (API) It is exactly what it says, all purpose. This index includes every trait that can be calculated: calving ease, pounds at weaning and yearling, keeping replacements back, milking ability and stayability, then the calf crop. It took into consideration, some being retained as replacements, then the rest being fed out and sold grade and yield. Terminal Index (TI): This index is to be used if all calves are going to a feedlot. It evaluates a sire only for use on mature cows with all calves put on feed and sold grade and yield. No other factors were figured in. Using API and TI: First determine which index to use. If you’re breeding heifers and keeping replacements, use API. If all calves are going to the feedlot and finished, use TI.
( Average EPD’s are on the bottom of the percentile table above ) Calving Ease (CE) percentage of unassisted births when used on heifers. Birth Weight (BW) pounds of birth weight. Weaning Weight (WW) pounds of weaning weight. Yearling Weight (YW) pounds of yearling weight. Maternal Calving Ease (MCE) percentage of unassisted births in first-calving daughters. Maternal Milk (MM) pounds of weaning weight due to milk. Maternal Weaning Weight (MWW) pounds of weaning weight due to milk and growth. Stayability (Stay) percent of daughters remaining in the cowherd at 6 years of age. Carcass Weight (CW) pounds of carcass weight. Yield Grade (YG) yield grade score. Yield grade is an indication of the yield of red meat within a carcass. It is calculated by using several factors including 1) fat thickness, 2)
1
MR BROAD RANGE 513N PB SM • DOB: 1/11/25•ASA# 4624002•BLACK•POLLED
ACT BW 76 BWR 98 ADJ WW 611 WWR 93 ADJ YW 1207 YWR 99
GIBBS 7382E BROAD RANGE SSF BLK LOUISE Y534 CCR WIDE RANGE 9005A
KBHR BOLD RULER H152
MS LAURA 319L
MS JERRI 1275J
CE BW WW YW MCE STAY MM MWW YG MARB BF REA API TI 11.3 -0.6 79.9 132.3 7.4 16.5 22.3 62.2 -0.18 0.41 -0.02 0.85 154.5 90 Lot 1 leads off the sale and a nice group of GIBBS 7382E Broad Range sons. This bull is out of a first calf heifer and brings a tremendous amount of power, muscle, style, and eye appeal. He is the full-package type bull that we strive to produce.
Lot 1
Homestake Ranch 12 th Annual Production Sale • February 25,2026 • 1pm @ Huron Continental Marketing • 4 •
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