genomics

Genetic evaluations are a way to enhance selection and characterize genetics for animals for those traits that impact the profitability of beef production. Improvements in genomic technology have now made it possible to further enhance predictability of our current selection tools with the incorporation of genomic values into our genetic evaluations and thereby improving accuracy of EPD, particularly for younger animals. Genomic technology now along with pedigree, performance and progeny information can be used in the calculation and reporting of EPD.

In the AICA genetic evaluations, the genomic results are incorporated into the EPDs as a correlated trait. Through coordinated research and development between Iowa State University, AGI and AICA, a genetic correlation was calculated between the values obtained from the genomic test results and the phenotypic data at the Association. The stronger the genetic correlation the more the genomic value will impact the EPD and accuracy for a trait.

Through these research efforts genomic predictions for eight traits were identified to incorporate into the Charolais National Cattle Evaluation; Calving Ease Direct, Birth Weight, Weaning Weight, Yearling Weight, Maternal Milk, Ribeye Area, Marbling and Scrotal Circumference. In regards to selection based on genomic enhanced EPD, use has not changed as the EPD remains the industry standard. But with the addition of genomic enhanced EPD selection now has the added benefit of increased accuracy of selection for those younger or non-progeny proven animals that have a genomic enhanced EPD.

50K Genotype Testing

The AICA uses GeneSeek for parentage testing and 50K genotyping. Contact the Registration Department for a DNA kit specific to the animal to be tested.

A note from GeneSeek – Each day, tissue, blood, semen and hair follicle samples arrive at our lab. This starts a journey that transforms animal cells into valuable data. Each step going forward is quality controlled. The key processes are:

  1. Arrival. Thousands of samples roll in daily and are bar-coded for tracking.
  2. DNA sampling. Cells are dissolved to isolate the DNA inside. Then we purify and amplify the DNA. This process runs 24/7 as we prepare thousands of batches of nearly invisible molecules.
  3. Genotyping. In general, DNA is dotted on a chip or test panel and fed into instruments that detect gene marker variations.
  4. Bioinformatics. Math formulas specific to each breed convert raw gene data into meaningful patterns. Data go to breed associations to calculate GE-EPDs for their breeders.
  5. Sample storage. We store samples we receive, per agreements with breed associations.

Genomic-enhanced Logo

  • Genomic-enhanced Logo will be published on internet animal page and can be used by breeders when the EPD is published in advertising, sale catalogs, etc.

  • Genomic-enhanced EPD will be published for all registered animals owned by breeders enrolled on PPR or WHR.

  • Genomic-enhanced EPD will be published and available to the breeder for non-registered animals owned by breeders enrolled on WHR when they are the progeny of
    enrolled females.

  • Genomic-enhanced EPD will be published for any registered animal with an EPD computed as part of the Charolais National Cattle Evaluation.

  • Interim Genomic Enhanced EPD will only be computed and published for PPR registered animals and/or non-registered animals when those breeders are enrolled in
    WHR.

Genomic-enhanced Plus Logo

  • For those animals with a birth and weaning record submitted within the appropriate age window for weaning to be adjusted to 205 days a Genomic Plus logo will be
    available to so designate those animals with a genotype and performance data reported to AICA.

  • Additionally for those sires and/or dams with birth and weaning records for progeny included in the AICA genetic evaluation the Genomic Plus logo will be available to
    so designate those animals with a genotype and performance data reported to AICA.

InterIM EPD

  • Interim EPD are calculated during the time period between bi-annual Charolais National Cattle Evaluations. An interim EPD is designated with an “I” as the accuracy
    value.

  • Interim EPD are computed for calves within a contemporary group using available performance information and parental EPD. Interim EPD calculations do not result
    in a change in the parental EPD.

Charolais on Feed:
The Genetics of Feed Efficiency Field Day

August 22, 2013 • Urbana, Illinois

The American-International Charolais Association, co-hosted along with the University of Illinois and the National Program for Genetic Improvement of Feed Efficiency in Beef Cattle, the Charolais on Feed Field Day which offered an opportunity for breed enthusiasts to learn about emerging technologies that could soon benefit producers.

Charolais breeders, commercial cattle producers and other beef industry leaders from across the United States and Mexico attended the event. Click here to view complete coverage.

videos

Welcome to the Charolais on Feed Field Day
Robert Williams, AICA Director of Breed Improvement and Foreign Marketing; J. Neil Orth, AICA Executive Vice President; Larry Lehman, AICA President; Dr. Dan Shike, University of Illinois; Dr. Doug Parrett, University of Illinois; Dr. Jerry Taylor, University of Missouri
Genetics/Genomics: The Basics
Dr. Jonathan Beever, University of Illinois
The Weight Traits Project: What We've Learned
Dr. Matt Spangler, University of Nebraska
Genomic - Enhanced EPDs and Selection Indexes
Dr. Bobn Weaber, Kansas State University
american-international charolais association
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