Feed Additive Calculator, Favorite Of Ranchers And Livestock Producers, Now Available As Online Tool

   The University of Arkansas System Division of Agriculture has adapted its popular Medicated Feed Additive Calculator for the 21st century.     Ranchers and livestock producers can now access the calculator, available for the first time as a web-based tool, at
   A user guide for those new to the tool is available on the Division of Agriculture’s beef cattle nutrition and feeding page online at https://www.uaex.uada.edu/farm-ranch/animals-forages/beef-cattle/nutrition-feeding.aspx
   The tool was created to help veterinarians, industry professionals, feed blending facilities, and ranchers to calculate medicated feed additive inclusion rates while mixing feed.
   Shane Gadberry, professor of ruminant nutrition for the Division of Agriculture, said he originally created the feed additive calculator in response to a recurring challenge for Arkansas beef producers.
   “Several years ago, Arkansas was experiencing above-average incidences of anaplasmosis,” Gadberry said. “Producers were struggling with figuring how to get concentrated forms of chlortetracycline diluted down to more manageable blending rates.”  
   Anaplasmosis is a disease typically associated with bacteria transmitted through tick bites. Chlortetracycline is an antibiotic often used to treat the disease.
   Gadberry created a spreadsheet that producers could use to calculate as many as three serial dilutions of a concentrated medicated feed to get the final concentration down to a more manageable inclusion rate for on-farm blending. With this tool, producers could more easily fabricate a safe, self-made premix in large batches.
   “The serial dilution approach was also a means to help reduce mixing error,” Gadberry said.
   When feed regulations were adopted in 2017 for medically important antimicrobials, more veterinarians began reaching out, seeking assistance in calculating medicated feed additive inclusion rates, Gadberry said.
   Now the spreadsheet is available as an online calculator. Gadberry said that establishing the calculator as a website will help users avoid the need for specialized apps to access the tool.
   “This also helps ensure it will function across different operating systems, so you can use it on your Apple device, Android device or a Windows-based PC,” he said.
   Gadberry said there are no immediate plans to develop the calculator as a mobile app, but recommended that users add a shortcut to heir mobile web browser so that the tool will function similarly to a standalone app as long as the device is connected to the Internet. ∆

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