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Gain weight and operational flexibility from 200 days of uninterrupted growth.


Administering SYNOVEX®188体育平台 ONE GRASS to stocker steers and heifers is proven to increase gain and help stretch out performance when forage is still available for grazing beyond 140 days, which provides marketing flexibility not available with shorter-duration implants. In research studies, stocker calves implanted with SYNOVEX ONE GRASS saw the following performance improvements:

  • Steers receiving SYNOVEX ONE GRASS implant had a 17.2% improvement in gain over nonimplanted steers.1
  • Heifers receiving SYNOVEX ONE GRASS achieved an 11.3% increase in average daily gain.1

SYNOVEX ONE GRASS is convenient — it does not require refrigeration before use and is administered with the same SX10 Precision Applicator used with all SYNOVEX formulations. The SX10 features a one-of-a-kind retractable needle for consistent, accurate placement of the implant.

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  • An extended duration formulation tailored to stocker steers and heifers

    • Delivers the proven 10:1 ratio of TBA:E2 (150 mg of trenbolone acetate and 21 mg of estradiol benzoate equivalent to 15 mg E2) with a patented polymer barrier that extends the formulation payout up to 200 days2
    • Enhances operational efficiency by delivering implant performance almost twice as long as conventional implants, providing flexibility to graze beyond the time conventional implants run out

    A flexible and convenient implant

    • Administered with the SX10 Precision Applicator — like all SYNOVEX implants — featuring an exclusive retractable needle for consistent, accurate placement
    • Can be stored at room temperature until the package is opened

    Part of a broad portfolio of implants for every production stage

    • SYNOVEX ONE FEEDLOT — An extended-duration (up to 200 days) implant for feedlot steers and heifers
    • SYNOVEX C — An implant for suckling calves 45 days or older, up to 400 lb.
    • SYNOVEX S — An implant for steers weighing more than 400 lb.
    • SYNOVEX H® — An implant for heifers weighing 400 lb. or more
    • SYNOVEX CHOICE® — The most versatile potency implant for feedlot steers and heifers
    • SYNOVEX PLUS® — The most potent implant available for feedlot steers and heifers

    Backed by the service and support you trust from Zoetis:

    • The Implant Quality (IQ) program includes training and tools to maximize implant investment
    • The Zoetis Technical Services Team includes beef cattle nutritionists, veterinarians and meat scientists
    • Your local Zoetis representative can help determine how to incorporate SYNOVEX ONE GRASS into your stocker operation

    All SYNOVEX formulations are compatible with both the SX10 and metal revolver applicators.

  • 188体育平台SYNOVEX ONE GRASS is approved for increased rate of weight gain for up to 200 days for stocker steers and heifers.

    188体育平台One implant (six pellets) is administered to each steer and heifer by subcutaneous implantation in the middle one-third of the ear.

    Do not use in veal calves.

    Click to view the label

  • SX10 Precision Applicator

    SYNOVEX ONE GRASS is easy to administer with the SX10 Precision Applicator, which features a one-of-a-kind retractable needle for consistent, accurate placement of the implant. The SX10 is used for all SYNOVEX implants — no need for multiple applicators for different implant potencies. The SX10 features a retractable needle to prevent crushed, bunched or dropped implants, helping you get the most from your implant investment.

    188体育平台To administer SYNOVEX ONE GRASS with the SX10 applicator, follow the instructions included with the applicator for loading the implant clip, cocking the applicator, disinfecting and cleaning, replacing the needle, and removing the implant clip.

    188体育平台English and Spanish training videos are conveniently available online to help educate feedlot employees on implanting techniques, sanitation and use of the SX10 applicator.

    All SYNOVEX formulations are compatible with both the SX10 and metal revolver applicators.

  • 188体育平台The Implant Quality (IQ) program from Zoetis helps you get the most out of your SYNOVEX ONE GRASS implant. It provides:

    • Establishment of implanting goals
    • Development of a customized quality assurance (QA) program to fit the operation’s goals
    • Training of crew members in correct sanitation and implanting techniques
    • Monitoring and analysis of results

    188体育平台The program includes several useful tools:

    • Sanitation gear, including a disinfecting tray, sponge and ear brush, to help clean the ear prior to implanting
    • Service reports to assess implanting techniques of the processing crew and to check animals for implant retention three to four weeks later (available in paper or electronic formats)
    • Certificates of completion for all members of the processing crew

    Ask your local Zoetis representative how to get started with the IQ program.

  • 1 Cleale RM, Edmonds JD, Edmonds M, et al. Growth promoting hormonal implant pellets coated with a polymeric, porous film promote weight gain by grazing beef heifers and steers for up to 200 days. J Anim Sci. 2015;93(4):1933-1941.

    2 Herschler RC, Olmsted AW, Edwards AJ, et al. Production responses to various doses and ratios of estradiol benzoate and trenbolone acetate implants in steers and heifers. J Anim Sci.188体育平台 1995;73(10):2873-2881.

  • 188体育平台All trademarks are the property of Zoetis Services LLC or a related company or a licensor unless otherwise noted.

    188体育平台 Zoetis Services LLC. All rights reserved. SYN-00096

IMPORTANT SAFETY INFORMATION: Do not use SYNOVEX ONE GRASS in veal calves. Not for use in dairy or beef replacement heifers. Refer to label for complete directions for use, precautions, and warnings.




Synovex - How It Works

Synovex - How It Works





SYNOVEX Product line



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188体育平台This site is intended for U.S. Animal Healthcare Professionals. The product information provided in this site is intended only for residents of the United States. The products discussed herein may not have marketing authorization or may have different product labeling in different countries. The animal health information contained herein is provided for educational purposes only and is not intended to replace discussions with an animal healthcare professional. All decisions regarding the care of a veterinary patient must be made with an animal healthcare professional, considering the unique characteristics of the patient.

All trademarks are the property of Zoetis Services LLC or a related company or a licensor unless otherwise noted. ©2020 Zoetis Services LLC. All rights reserved.

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