Feed Lot

NOV 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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22 FEED•LOT November 2018 and feeding program. There are a multitude of implants on the market today. The length of time the implants will remain effec- tive (i.e. release hormone) ranges from 60 days to 350 days, with a majority of implants lasting from 60 to 120 days. Longer acting implants, such as Revalor-XS, contain coat- ed pellets that control the release rate of hormones over time. The development of this slow-release technology eliminates the labor and stress associated with re-im- planting cattle. Two studies conducted by the University of Nebraska compared a 2-implant strategy using Compo- nent TE-IS on day 1 followed by Component TE-S on day 85 with a single implant of Revalor-XS. One study found that re-implanted cat- tle had greater feed efficiency and ribeye area compared to cattle that received a single implant of Reval- or-XS. The second study found that cattle performance was similar between the single implant and two implant program. A third study conducted by UNL researchers compared the use of a single im- plant of Revalor-XS with a two-im- plant protocol of Revalor-IS and Revalor-S. Researchers observed Implants have been approved for use in the beef cattle industry for over 60 years, with the first implant being permitted in 1956. According to R. Preston (1999), implants can improve growth rate by 30% and feed efficiency by 15%. Due to their effectiveness, implants have one of the highest rates of return of any product in the beef industry. According to the USDA's National Animal Health Monitoring System's 2013 Feedlot survey, 90% or more of steers entering the feedlot receive at least one implant. Sixty-seven percent of steers weighing less than 700 pounds received 2 or more implants, and 77% of steers weigh- ing 700 lbs. or more received one. Implant strategies range from 1 to 3 implants depending on cattle weight, genetic potential, age, sex, FEEDLOT FOCUS IMPLANTING PROTOCOL 2 Implants vs. 1 Implant BY JANA GRAMKOW, PH.D GREAT PLAINS LIVESTOCK CONSULTING INC. Research echos there are many different yet successful strategies for implanting. Understanding how long your cattle will be on feed will help you choose the implant program that is best suited for you

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