Mid Coast Opportunity Sale Catalog

Santa Gertrudis Genetics

The Santa Gertrudis Breeders International genetic evaluation is one of the most comprehensive among the Bos indicus breeds. The evaluation system, developed for the association by Livestock Genetic Services, has been reviewed by the nation’s leading animal geneticists and utilizes genotypes collected from the breed’s leading sires and validated on 10K, 20K, and 50K SNP Chips. Thousands of ranch phenotypes and scan records collected over a 28-year period serve as the foundation of the genetic evaluation. SGBI’s reliable genetic evaluation ensures that cattlemen can make sound selection decisions, identifying those animals that will perform in the most challenging of environmental conditions. – John Ford, Executive Director, SGBI · John Genho, President, Livestock Genetic Services SGBI Expected Progeny Differences Expected Progeny Differences, EPDs, are the prediction of how future progeny of each animal are expected to perform rela- tive to the progeny of other animals listed in the SGBI database. EPDs are expressed in units of measure (plus or minus) for each trait being evaluated and are calculated utilizing pedigree and performance information. In 2013, Santa Gertrudis Breed- ers International released the first genomic-enhanced expected progeny differences (DNA verified) for Bos indicus -influenced cattle and was the first beef breed to utilize the “single-step”method for the incorporation of DNA into the EPD calculation. The inclusion of DNA into the breed’s EPD calculations (GE-EPDs) results in information that is more accurate and predictable than a pedigree and performance prediction alone. SGBI Growth Index The growth index puts together weaning weight and yearling weight. Since WW is contained in YW, post-wean gain (PWG) is used in the index to prevent double countingWW. As an example of the index, if an animal has a +30 growth index, its offspring will be on average worth $30 more as a yearling than the breed average, based strictly on weight. SGBI Carcass Rank Index The carcass rank index contains marbling score, hot carcass weight, ribeye area, backfat and tenderness and is weighted by the economics of carcass values. It is expressed as a numerical ranking within the breed from 1 -10, with 10 being the highest. For example, an animal with a score of 9 would be in the 80th percentile or would be better than 80% of the population in carcass composition. A ranking of 6 would place the animal in the 50th percentile. -8.41 46.93 24.34 67.04 46.11 0.691 0.469 -0.139 -0.782 1.89 Top 1% -2.49 17.21 8.81 24.67 17.41 0.227 0.078 -0.011 -0.088 0.34 Top 2% -2.08 14.62 7.44 20.72 14.67 0.184 0.060 -0.009 -0.068 0.24 Top 3% -1.80 13.07 6.59 18.33 13.06 0.159 0.049 -0.008 -0.055 0.19 Top 4% -1.62 11.90 5.98 16.64 11.88 0.142 0.045 -0.007 -0.047 0.16 Top 5% -1.48 10.98 5.50 15.27 10.95 0.127 0.043 -0.006 -0.040 0.14 Top 10% -1.14 7.91 4.00 10.79 7.83 0.085 0.026 -0.004 -0.023 0.09 Top 20% -0.82 4.38 2.69 5.88 4.26 0.044 0.017 -0.002 -0.009 0.07 Top 30% -0.64 1.94 1.68 2.59 1.83 0.027 0.016 -0.001 -0.003 0.07 Top 40% -0.56 -0.05 0.81 0.09 -0.11 0.011 0.012 0.000 0.000 0.04 Top 50% -0.32 -1.79 0.71 -1.93 -1.58 0.008 0.007 0.000 0.000 0.02 Top 60% -0.10 -3.07 -0.13 -2.84 -2.57 -0.005 0.001 0.001 0.002 0.00 Top 70% 0.20 -3.31 -1.02 -3.85 -2.96 -0.022 -0.007 0.002 0.007 -0.03 Top 80% 0.56 -4.55 -2.15 -6.04 -4.65 -0.042 -0.017 0.002 0.013 -0.07 Top 90% 1.08 -7.22 -3.97 -9.10 -6.88 -0.077 -0.036 0.004 0.030 -0.14 SGBI EPD Percentiles by Trait August 2017 Percentile Birth Weight Weaning Weight Milk Yearling Weight Carcass Weight Ribeye Area Marbling Fat Tenderness Scrotal Best

Cattleman , s Opportunity Sale • September 16, 2017

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