American Angus & American Simmental EPDs Definitions
Lot
Lot Block Example
C alving E ase D irect (CED)(CE) , is expressed as a difference in percentage of unassisted births, with a higher value indicating greater calving ease in first- calf heifers. It predicts the average difference in ease with which a sire’s calves will be born when he is bred to first-calf heifers. B irth W eight EPD (BW) , expressed in pounds, is a predictor of a sire’s ability to transmit birth weight to his progeny compared to that of other sires. W eaning W eight EPD (WW) , expressed in pounds, is a predictor of a sire’s ability to transmit weaning growth to his progeny compared to that of other sires. Y earling W eight EPD (YW) , expressed in pounds, is a predictor of a sire’s ability to transmit yearling growth to his progeny compared to that of other sires. M aternal M ilk EPD (M ilk ) , is a predictor of a sire’s genetic merit for milk and mothering ability as expressed in his daughters compared to daughters of other sires. In other words, it is that part of a calf’s weaning weight attributed to milk and mothering ability. M arbling EPD (M arb ) , expressed as a fraction of the difference in USDA marbling score of a sire’s progeny compared to progeny of other sires. R ibeye A rea EPD (RE) , expressed in square inches, is a predictor of the difference in ribeye area of a sire’s progeny compared to progeny of other sires.
AAA# 21180094
Angus
DOB 12/31/23
BW 74 205 Wt. 572 Dam Birth Ratio
S A V Rainfall 6846 Square B True North 8052 Elbanna of Conanga 1209 Tehama Tahoe B767 Baldridge Forever Lady K050 Baldridge Forever Lady H126 CED BW WW YW SC
3@104
Dam Wean Ratio
3@104
Milk Marb RE
Fat
7
0.3
80
131
0.64
35
1.25
0.87 0.015
F at T hickness /B ack F at EPD (F at )(BF) , expressed in inches, is a predictor of the differences in external fat thickness at the 12th rib (as measured between the 12th and 13th ribs) of a sire’s progeny compared to progeny of other sires. D am B irth R atio , is the number of calves reported and their average birth ratio. D am W eaning R atio , is the number of calves reported and their average weaning ratio.
Genomic Testing & Genomic Enhanced EPDs
A merican A ngus A ssociation G enomic E nhanced EPD s
Genomic results are a way to enhance predictability of current selection tools, to achieve more accuracy on EPDs for younger animals, and to characterize genetics for traits where it’s difficult to measure the
of feed efficiency and end-product tenderness, which are relevant to Angus breeders as well as their bull customers, cattle feeders, and consumers. When making selection decisions for traits that have EPDs provided by the AAA, the EPDs should be the selection tool of choice. The EPDs account for all sources of information available on the animal – pedigree, own record, weights/measures, and genomic results. We will have full AngusGS results available sale day.
animal’s own performance for the trait, such as carcass traits in breeding stock or maternal traits in bulls. With the investment in genomic technology, this means that in addition to the pedigree, performance and progeny information that are used in the calculation and reporting of Angus EPDs, genomic test results have also been incorporated into the EPD. Genomic-enhanced EPDs (GE-EPDs) are important because they make use of the results from the DNA test in addition to all other sources of information to provide added accuracy and reliability to the animal’s EPD. In fact, depending on the trait, GE-EPDs on unproven animals have the same amount of accuracy as if they had already sired 8-20 calves. *It is important to note that genomics do not completely describe the variation in the traits of interest. Phenotypic measures collected by Angus breeders, such as birth, weaning, and yearling weights, ultrasound scan data, carcass data, etc., continue to be an important part in further development of improved genomic panels, not to mention an important component in EPD calculation. H ow are G enomic T est R esults R eported ? The results of genomic testing are provided in percentile rankings, based on a reference population of more than 15,000 tested Angus animals. Ranks range from 1 to 100 with lower numbers generally favored for most traits. Some traits for which percent ranks are available, are not yet included in GE-EPDs powered by AngusGS. These include ranks for heifer pregnancy, measures
A merican S immental A ssociation DNA
Our Simmental based genetics use Neogen’s GGP to genetically enhance their EPDs. GeneSeek Genomic Profiler (GGP) Bovine 100K lassos the knowledge of industry leading scientists who have designed and processed more animal genotyping arrays than any other organization. The new generation GGP Bovine 50K leverages Neogen’s leading SNP selection processes to precisely choose the best 100,000 SNPs. This delivers more accurate evaluation of genetic merit, genome wide selection, comparative genetic studies, and higher density imputation. The GGP Bovine 100K contains all the content from popular lower density commercial arrays. Additionally, it has validated and retained the most informative SNPs from the original Illumina Bovine SNP50 and Illumina Bovine HD Bead Chips. Utilize the best content from the most commonly used commercial genotyping arrays, and for a low affordable price, PLUS comprehensive parentage, disease and trait relevant SNPs.
3
Made with FlippingBook - Share PDF online