Home Mission Herd Sires Sale Results Carcuss EPDs Glossary

Darlene Butcher and Sons

2190 Joyland Road, Lower Spring Creek, Lewistown, MT 59457
Office 406-538-8551 • Tom 406-538-2923 • Jim 406-538-9695
Fax 406-538-2305 • Email: [email protected]

CARCASS EPDs

What The Carcass EPD Figures Mean In The Gateway Herd

Gateway Simmental has finished all their male calves that have not made the "Bull Pen" since 1994. Most of the calves have had a known sire and many are from a pedigreed dam. We have also evaluated our genetics on Angus cows in other test herds for a similar number of years. We have retrieved most of the carcass data through the years. Most of the calves have been sold on a grid of some kind. We have had pens grade an average of 80 plus percent "choice" down to 30 percent "choice". The back-fat range has been from .3 to .45. The average rib-eye areas on the same cattle in different years and kill facilities have varied 2 square inches and have significantly improved through the years. We have killed at all the major packing companies except Farmland and have sent several groups through Caldwell Pack at Windom, MN for PM Beef Group. I have wondered what certain carcass EPD meant in real number terms and what the differences implied in our herd based on our data. I thought some of you might be interested as well.

I would like to make a few comments on what we’ve learned. It seems that the year, feeding conditions, weather, and the size and degree of condition of the steers have a big influence on the carcass figures on a pen of cattle. For example, our steers have about .4 of back-fat at approximately 1300# live weight. Our cattle seem to make the most money if we feed them to that weight. It is very apparent that EPD’s are a more useful selection tool than trying to compare raw numbers on carcasses. With our data and what the American Simmental Association has assembled, we as Simmental producers are getting a grasp on what we are raising and how they can positively influence the beef industry. All breeds have cattle that excel in one or many of the measured traits. Raw growth is no longer as important as it used to be in this part of the country. Many producers now are commenting on how big their cows are getting.

We are at a crossroads in the breeding cattle business with COMPOSITION of growth being the driver in the future. We all want our calves to wean heavy, but at some point we must ask, what will the value of those pounds be at final harvest? Am I going to make more money by selecting more growth or am I at an optimum level already? What was the feedlot performance of my calves? At what weight did my cattle get harvested, what did they dress, quality and yield grade? How many outliers did I have? Standards, Yield Grade 4s or dark cutters. Is maturity at harvest an issue? Where do I need improvement? To improve yourself, you may need to look at the efficiency of getting to that weight, by reducing cow size or improving maternal heterosis. You may be able to adjust your calving season. There are a number of things you can do, but, at some point the added frame associated from adding more growth may be counterproductive. 

In order to improve our programs and become more efficient, we need to know what our genetics do. Are we positioning ourselves to satisfy future industry demands?

The following charts are a summary of the data
we’ve collected on our cattle:

CHART 1
Value differences in grading percentage
based on Marbling EPD profile of Herd Sires.
  

  

Sire Name

Marbling
EPD
Calves
EPD
Number
Head
% Low
Choice or +
% Mid
Choice or +
  
 

Lucky Strike

.49 25 60 +30% +18%  
 
 
  Lucky Buck .28 .15 175 +14% +9%  
 

Lucky Dice

to          
 

Red Light

.30          
 

High Density

           
 
 
 

Mr. Maternal

.09 .06 160 +6% +2%  
 

Orlando

to          
 

Bodybuilder

.12          
 
 
 

GW Jet Black

-.10 -.11 95 Base Base  
 

Northern Star

to          
 

GW Pasque

-.25          
 

High Noon

           
   

CHART 2
Summary of differences we see on individuals with Carcass EPDs
on both sides of the pedigree. All animals are at least 3/4 Simmental.
  

  

Steers
Marb
EPD Range

Ave.
Marb
EPD

Number
Head
% Low
Choice or +
% Mid
Choice or +
  
  >.2 .25 94 +34% +17%  
 
 
 

>.1<.2

.14 219 +19% +9%  
 
 
 

>0<.1

.05 188 +16% +9%  
 
 
 

<0

-.08 181 Base Base  

There are programs like the Montana Beef Network available to producers that enable you to find out what you are producing without retaining ownership. Buyers like Dan Deichmann and Steve Christensen also are willing to help you retrieve data and help you analyze it.

CHART 3
Summary of weights and measures related to Retail Product for EPD ranges
  

  

Range
RTP EPD

%
Sim Range

Ave.
EPD

CW
EPD

Number
Head

CW
lbs

Back
Fat

REA

Ave
YG

  
  >.3 3/4+ .39 -9.0 143 790 .37 14.03 2.4  
    1/2 .41 -5.4 8 830 .38 14.45 2.4  
 
 
 

<.3>.14

3/4+ .23 -4.7 190 813 .38 14.04 2.5  
    1/2 .23 -5.5 13 776 .33 13.65 2.3  
 
 
 

<.14>0

3/4+ .09 -3.6 155 798 .36 13.52 2.5  
    1/2 .09 -4.8 48 801 .45 13.51 2.7  
 
 
 

<0

3/4+ -.12 -.7 110 832 .38 13.43 2.8  
    1/2 -.13 -2.0 73 815 .41 12.98 2.9  
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Darlene Butcher and Sons

2190 Joyland Road, Lower Spring Creek, Lewistown, MT 59457
Office 406-538-8551 • Tom 406-538-2923 • Jim 406-538-9695
Fax 406-538-2305 • Email: [email protected]

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