Synovex Choice Cattle Implant 100ds View larger

Synovex Choice Cattle Implant 100ds

A cattle Implant recommended for increased weight gain in steers and heifers fed in confinement for slaughter. Each dose contains 100 mg trenbolone acetate and 14 mg estradiol. It provides a 10:1 ratio of trenbolone acetate to estradiol benzoate. Implant gun must be purchased separately! Approx 120 day implant.

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Demonstrated to provide an excellent balance between feedlot performance and quality grade.

Studies have demonstrated that the administration of Synovex Choice can result in decreased marbling scores when compared to non-implanted steers. Studies show  Synovex Choice is effective for 120 days.
One implant (four pellets), containing 100 mg of trenbolone acetate and 14 mg of estradiol benzoate, is administered to each steer by subcutaneous implantation in the middle one-third of the ear.


This product is approved for use in cattle only. Attempts to use the product in any other a manner violate federal, state, and local laws. By purchasing this product you agree to use this product in the manner for which is intended and in accordance with the label instructions. Failure to follow label instructions are beyond the control of LivestockConcepts. and are, therefore, the responsibility of the buyer.

Do not use in veal calves. No slaughter withdrawal.


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.
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 “X” in 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 “X”. 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 recock 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.


Synovex Choice

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