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To locate the appropriate injection area, put the heel of your hand on the base of the horse’s neck where it joins the shoulder, about midway between the crest and the bottom of the neck. The area covered by your palm is the injection site.
The suspension should be administered by deep intramuscular injection within the fleshy muscles of the hip, rump, round or thigh, or into the neck, changing the site for each injection. Do not inject subcutaneously, into a blood vessel, or near a major nerve. Use a 16 or 18 gauge needle, 1.5 inches long.
Sedating Your Horse
There are 3 main ways in which horses can be sedated – 2 of these are via an oral syringe that the owner can administer themselves (Domosedan and Sedalin/Relaquin) and the third is through intravenous sedation administered by the vet.
Dosage and Administration
Oral tablets are extra-label for horses. The dosage should be adjusted depending on the degree of tranquilization required. IV doses should be administered slowly, and a period of 15 minutes should be allowed for the drug to take full effect.
The needle should be long enough to reach the muscle without penetrating the nerves and blood vessels underneath. Generally, needles should be 1 inch to 1.5 inches for an adult, and will be smaller for a child. They’ll be 22-gauge to 25-gauge thick, noted as 22g on the packaging.
Giving an IM injection into the deltoid site
Make sure you pinch up on subcutaneous tissue to prevent injection into the muscle. Insert needle at a 45° angle into the fatty tissue overlying the triceps muscle. Make sure you pinch up on the subcutaneous tissue to prevent injection into the muscle.
Needle length should be chosen based on the body habitus and weight of the patient. A needle that is too long can penetrate the deltoid muscle, hitting the bone. Although patients will not feel their bones being hit, the vaccine might not fully absorb into the muscle, leading to a reduced immune response.
Have a new prescription from your vet? Metronidazole is an antibiotic that is used in horses to treat bacterial infections caused by anaerobic bacteria (bacteria that do not live in the presence of oxygen).
Penicillin Injectable is indicated for treatment of bacterial pneumonia (shipping fever) caused by Pasteurella multocida in cattle and sheep, erysipelas caused by Erysipelothrix rhusiopathiae in swine, and strangles caused by Streptococcus equi in horses.
Penicillin V given orally was thus shown to be an acceptable alternative to parenteral administration of penicillin in the horse.
DOSAGE: The dosage for cattle, sheep, swine, and horses is 3000 units per pound of body weight, or 1.0 mL for each 100 pounds of bodyweight, once daily. Treatment should not exceed 7 days in non-lactating dairy and beef cattle, sheep, and swine, or 5 days in lactating dairy cattle.