Feed Lot

SEP-OCT 2018

Feedlots and cow/calf operations in the beef industry who feed 500 or more has annually on grains and concentrates; maintain 500 or more beef cows; backgrounder, stocker/grower, preconditioner; veterinarian, nutritionist, consultant

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FEED•LOT September/October 2018 21 of implant technology in suckling calves has actually declined from 14 percent to 9.8 percent over a ten-year period. The reasons for this decline are not fully known or understood. Some of these non-im- planted calves are likely being sold into specialty or branded programs that prohibit anabolic implant use. However, another reason cattle managers leave suckling implants out of their tool box is the "stig- ma" that calves implanted in the suckling phase are discounted at the sale barn. In 2015 Rogers and colleagues published results from studying the effects of growth-promoting implant status on sale price of beef calves sold through livestock video auction services from 2010 to 2013. Over the three years they noted about 28 % of the weaned steers marketed had received an implant prior to weaning. They found that implant status of calves had no effect on the sale price of beef calves. In other words there were no discounts as a result of using implant technology or more over no cattle received premiums for their non-implant status. Another reason suckling calf im- plant use may have declined is the thought that previously implanted calves do not respond as well to subsequent implants in the grow- ing and finishing phase. Two SDSU studies, one by Pritchard and col- leagues (2015) and one by Web and colleagues ( 2017 ) further studied the impact of suckling calf implants on post-weaning live animal and carcass performance. Both studies found there were no effects on aver- age daily gain, or feed efficiency in the receiving, backgrounding or fin- ishing phase if a calf was previously implanted during the suckling phase of life. Both studies found there were no negative impacts from suckling implants on subsequent carcass characteristics. So after ruminating on all that— who will take the deal proposed in the first paragraph? FL Some of the biggest successes in nutritional additives were invented in our labs. By our employees. And that expertise helps us better understand the components that go into our products, and pushes our team to develop unique combinations for greater performance. Find some of your own at PMIadditives.com. ©2018 PMI. All rights reserved. THERE'S FINDING WHAT WORKS. AND THERE'S KNOWING HOW IT ALL WORKS TOGETHER.

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