Ralgro Magnum implants on day 1 followed by Revalor®-S on day 100 in calf-fed steers on feed for 194 or 222 days provided similar ADG and carcass responses as Ralgro implants day 1/Revalor-S day 70.
Reference: Veterinary Technical Update Comparison of Six Implant Strategies in Feedlot Steers and Their Effect on Live Animal Performance and Carcass Characteristics, SPAH-RAL-14.
Often it is not known how a set of cattle are to be sold until after implanting decisions have been made. Using Ralgro implants as an initial implant maintains marketing flexibility. Not only can it improve quality grade, but a 2.8% improvement in feed efficiency is worth at least $3.50/head for cattle on feed 150 days, making it more profitable whether selling live or on a grid.
Reference: Data on file, Merck Animal Health.
References: R. Hale, "Comparison of Feedlot Performance and Carcass Traits of Steers Administered Anabolic Implants and Anthelmintic Drenches", Current and Future Practices in Cattle Production, July 1995.
Stimulation of growth hormone and IGF-1 (growth regulating hormones) has been demonstrated up to 80 days post-implanting.
References: Borger et al, J Anim Sci, 1974; Reinhardt et al, Beef Cattle Research in Texas, 1992, SPAH-RAL-16.
Reference: Current and Future Practices in Cattle Production, July 1995.
These factors contribute to the effectiveness of the implant and result in fewer complications, including costly abscesses. For example, in one trial, implant site reactions occurred in only 1.56% of cattle implanted with Ralgro implants but 6.35% of cattle implanted with Synovex-S.
Reference: "Comparison of Feedlot Performance and Carcass Traits of Steers Administered Anabolic Implants and Anthelmintic Drenches", Current and Future Practices in Cattle Production, July 1995.
Reductions can be dramaticfrom 9.9% to 4.9%, for example. Each buller can be an expense of as much as $25 due to injury, death, extra facilities, and labor.
References: SPAH-RAL-5 and SPAH-RAL-18.
Do not overlook those factors when evaluating your implant program.
Reduce your product inventory and the inconvenience of administering sex-specific implants.
Ralgro and Ralogun are registered trademarks and Magnum is a trademark of Schering-Plough Animal Health Corporation
Revalor is a registered trademark of Hoechst Roussel Vet.
Synovex is a registered trademark of Fort Dodge Animal Health.