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Working Ranch - November/December 2017

We’ve come a long way in our understanding of bovine genetics since the old days when things were much simpler. required that their offspring born before December 31, 2009 be DNAtested for the AM gene and results of the carrier status would then be noted on their registration and performance pedigree certifi cates. Today, heifers have to be tested but can be registered no matter the outcome. Bulls, however, can only be registered if they test AM free. Steers don’t require testing, while calves from AI carrier bulls may be registered if they were conceived less than 60 days from the time the bull was identifi ed as a carrier. The policy is less aggressive for a non-lethal condition like Oculocutaneous Hypopigmentation (OH, or White Eye). The AAA provides detailed information about each defect as well as guidance for breeding and management. The potential carrier status is clearly noted for every animal so they can be managed appropriately. The testing and grace period allowed Angus breeders to identify the affected animals so that they could be strategically bred to have calves that test free of the AM gene—therefore keeping the quality genetics of their parents without passing on the problem genes. “The Association offers education; we clearly identify carriers and potential carriers and promote transparency so that our members and their customers can be confi dent,” Dr. Moser reassures. “Our customer Your Ranch, Your Magazine service representatives do a great job working with members and helping them understand how to breed the next generation of Angus with better genetics than the one before.” BREEDERS ARE VIGILANT Regardless of the breed in question, fi nding genetic defects attached to certain bloodlines presents a challenge for many producers, despite our ability to identify them. “The identifi cation of genetic recessives in the Angus breed created a major negative impact on our business,” says Brian House, Vice President, Beef Program and Product Manager at Select Sires. “During the period of time when AM, NH (Neuropathic Hydrocephalus recognized in 2009) and CA were identifi ed, we tested and identifi ed 41 bulls who were carriers of these recessives. This included bulls of all ages—older proven bulls and young bulls that A gift subscription is always nice, $19/year Call 833-WE-RANCH or go to our website www.workingranchmag.com NOVEMBER / DECEMBER 2017 I WORKING RANCH I 115


Working Ranch - November/December 2017
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