A Steak in Genomics™

Previously, when I spoke with commercial producers about genomic predictions for their heifers, I talked about two products, the GeneMax Focus and the GeneMax Advantage tests marketed by Zoetis. This has now changed. GeneMax Focus and GeneMax Advantage Of course, genomic predictions for seedstock cattle have been available for a large number of breeds, including Angus, Red Angus, Simmental, Hereford, Limousin, Gelbvieh, Santa Gertrudis, and Charolais. But, genomic predictions for commercial cattle where only available from Zoetis for high-percentage (greater than 75%) Angus cattle. GeneMax Focus was the first commercial cattle genomic prediction test released. It provides predictions on a 5 point scale for marbling and gain, and an index called a GMX score on a scale from 1 to 100. These scores are percentile ranks where 50 is average, 1 is the bottom of the heap, and 99 is top of the class. This test cost $17. From my conversations, it explains about 20% of the variation in mar...

On January 27th I spoke with Scott Brown during the evening portion of the Southwest Missouri MU Extension Beef Cattle Conference organized by Patrick Davis, Andy McCorkill, and Eldon Cole. I discussed the facts about EPDs working to change a herd and how genomic testing can improve the precision and reliability of EPDs. Genomic testing is allowing us to select for traits that were previously not under selection, such as feed efficiency , bovine respiratory disease resistance, embryonic loss, and tenderness. You can download my slides from my extension website . But, in this post, I want to focus on Scott Brown's comments. For those of you who don't know Dr. Brown, he is a leading agriculture economist who has been influential in the formation of agricultural policy on the state and national level. On Tuesday night he gave a projection on the future of beef cattle economics. As we all know, beef prices are at record highs, but this is driven by historically low cattle num...

STOCKTON, Mo. – The Southwest Missouri MU Extension Beef Cattle Conference begins at 4 p.m., Jan. 27, 2015, at the Stockton United Methodist Church in Stockton. The Southwest Missouri MU Extension Beef Cattle Conference is designed to provide the latest information on beef cattle production, marketing, economics, nutrition, and forage utilization.  Presenters at the meeting include: Dr. Scott Brown, assistant research professor of agricultural and applied economics at University of Missouri, will provide a 2015 economic outlook of the beef cattle industry. Dr. Jared Decker, assistant professor of beef genetics extension and computational genomics at the University of Missouri, will discuss beef cattle genetics. Sarah Kenyon, agronomy specialist with MU Extension in Texas County, will discuss pasture management to reduce fescue toxicity. The evening meal will be catered by Maggie Mae's Tea Room of Miller, Mo. “That same evening, agriculture businesses that have s...

There was standing room only for the Breed Improvement Session of the Angus Means Business National Convention  on November 4th, 2014. Genomic Recalibration Dan Moser, Angus Genetics Incorporated Performance data reported to the American Angus Association has become more important than ever. Not only is this data necessary to get highly precise estimates from sires, but it is the foundation of developing genomic predictions for genomic-enhanced EPDs. In the training or recalibration of genomic predictions, basically an EPD effect is estimated for every DNA variant included in the genomic prediction test. The genomic prediction (also called the Molecular Breeding Value, MBV) is the sum of every EPD effect for approximately 50,000 DNA variants evenly spread throughout the cattle chromosomes. Initial GE-EPDs in 2010 were based on 2,253 animals. In 2012 the training set increased to  11,756, by 2013 the training set was larger than 38,000 animals, and now in 2014 has reach...

In October, we reported that Angus Genetics Inc would be including feed intake data into $F and $B indexes. On December 5th, 2014 those changes took effect. In our October poll, 91% of the respondents indicated that they considered including feed intake data as an improvement to the $B index. And, the data backs this up (see here for more about our data-driven philosophy). Since 2004 the American Angus Association has seen an increasing genetic trend for feed intake. This means Angus producers have been indirectly selecting for increased feed intake, which is a negative when we are striving for more efficient cattle. Figure 1. Deregressed estimated breeding values for birth and weaning weight plotted against birth date. Deregressed estimated breeding values plotted against birth date for 3,570 Angus animals. The blue lines represent fitted linear and red lines represent fitted quadratic regressions. a . Deregressed birth weight EBV, and b . Deregressed weaning weight EBV. Dec...

As you know, I started in my current position at the University of Missouri Beef Genetics Extension Specialist in March of 2013 . Check out the first A Steak in Genomics video to see how I describe my approach to extension education and research. (Excuse the ums and uhs, I was a little more nervous than usual as it was a job interview!) Have you ever wondered why polls started appearing at the bottom of these blog posts? It is an effort to have a data-driven extension program in which we measure and respond to feedback from you, the Steakholders. In order for us to really make progress in using genomic technologies and animal breeding best practices in beef production, there needs to be an open and honest conversation about these topics. If you ever are concerned there is an inaccuracy in my writings or presentations, please bring it to my attention as a comment on the blog, in an email, or a phone call . But please bring the data! Don't bring fallacies or antidotes to a d...

Rebecca Mettler wrote a story for the Joplin Regional Stockyards Cattlemens News. Mettler talked to Dr. Megan Rolf of Oklahoma State University and me about the use of DNA testing in the beef industry with a focus on commercial operations. Check out the article on page 18 of the November issue !