Synovex One Grass Implant 100ct.


Synovex One Grass Implant 100ct.

Zoetis - Synovex ONE Grass is an extended release growth promoting implant for increased rate of gain in pasture steers or heifers or any age.

Approximate 200 day implant Make the most out of the forage season!

Implant gun sold separately!


Synovex ONE Grass is an extended release growth promoting implant for increased rate of gain in pasture steers or heifers or any age (slaughter, stocker, and feeder) that lasts for up to 200 days so you can get the most out of grass season! Contains 150 mg of trenbolone acetate and 21 mg of estradiol benzoate with a porous polymer film coating. Proven to increase gain and help draw out performance when grazing, extending beyond 140 days, which can offer marketing flexibility.

Species: Beef cattle


Helps increase rate of gain for steers for a 17.2% improvement over non-implanted steers.

Helps heifers achieve an 11.3% increase in average daily gain.

Designed for use in pasture cattle (steers and heifers) as an initial implant.

No slaughter withdrawal.


For increased rate of weight gain for up to 200 days in growing beef steers and heifers on pasture or fed in confinement for slaughter.

Do not use in calves to be processed for veal. Not for use in dairy animals or animals to be used for breeding.

Do not use in beef calves less than 2 months of age, dairy calves, and veal calves.

For animal use only.

Not approved for reimplantation with this or any other cattle ear implant within each separate production phase (pasture phase and confinement phase).

Refer to label for complete directions for use, precautions and warnings.

Storage: Store unopened product at controlled room temperature 20 to 25 °C (68 to 77 °F) with excursions between 15 and 30 °C (59 to 86 °F). Avoid excessive heat and humidity. Use product before the expiration date on the label.

Once the pouch is opened, unused product may be stored in the end-folded pouch (away from light) for up to 6 months under refrigerated conditions 2 to 8 °C (36 to 47 °F) or at room temperature 20 to 25 °C (68 to 77 °F) with excursions between 15 and 30 °C (59 to 86 °F) for up to one month.


Step 1: Loading the SX-10 gun  

Load the SX10 gun following the directions outlined in the instruction manual accompanying each SX10 gun.  

Step 2: Restraint

The animal must be confined in a restraint mechanism (squeeze chute or head gate). The implant site on the back of the ear should be prepared by scrubbing with a generous-sized piece of cotton that has been soaked in a germicidal solution.

Note: If implanting horned cattle, greater safety is provided when the head is controlled by the use of a bull lead (nose tongs).

Step 3: Implant Site  

Divide the ear into three imaginary sections as illustrated. The implanted pellets should be deposited in the center one-third of the ear as shown. To accomplish this, the SX10 gun needle should be inserted in the outer one-third of the ear as indicated by the illustration. Implanting too close to the head may cause abnormal sexual behavior. Care should be taken to avoid severing the major arteries of the ear.

Step 4: Insert Needle  

Just before grasping the ear with one hand, release the safety by striking the butt of the gun. Holding the SX10 gun firmly with the other hand, penetrate the skin at the point shown by the illustration. Thrust the needle under the skin taking care not to penetrate the cartilage. Ease the SX10 gun forward (toward the base of the ear) until the full needle length is beneath the skin.

Step 5: Pellet Implantation  

When the needle is completely inserted, activate the instrument by squeezing the trigger completely. Do not withdraw the needle, but allow the automatic needle retractor to release the pellets. This will allow the pellets to be deposited in a straight line in the path of the retracted needle.

Step 6: Inspection  

Check the implant site. If properly administered, the implants should lie in a straight line under the skin .Disinfect the SX10 gun needle in a germicidal solution and re-cock the instrument by rotating the cocking grip left, pull back, rotate right, then push all the way forward. You are now ready to implant the next animal.


Specific References

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