Injections For Sheep

Bruising, abscesses and trauma are the three main reasons for beef and sheep carcases to be rejected at slaughter.  A common cause of abscesses (a collections of pus in confined tissue spaces) is bacterial infection resulting from poor needle practice, particularly in the use of dirty needles.  In young stock these abscesses and lesions can stay present from the time of injection until slaughter. Having to trim around these areas results in loss of meat and inevitability decreases carcass value as well as presenting an unwelcome health challenge for the animal. With a number of routine vaccinations likely to take place in the coming weeks and months the following tips on injecting stock should help to avoid causing damage.

It may seem an obvious place to start but before carrying out any treatment check the expiry date and read the manufactures guidelines on directions for how the product should be used.  Not only will this tell you the dosage rate (make sure you have enough doses for the number of stock you intend to treat) but will tell you whether the injection is subcutaneous or intra-muscular. Adequately restrain the animal so that that they are kept as still as possible before giving an injection as needle movement during administrating an intramuscular injection can lead to muscle damage.  It also lessens the risk of a bent or broken needle.  Injecting stock intramuscularly has the potential to cause permanent damage (3 inch square area around the site of injection can be affected).  Best practice is to inject in the neck area, which reduces the risk and likelihood of damage to the expensive cuts of meat.


IVOMEC Injection is a ready-to-use sterile solution containing the following ingredients per mL: 10 mg ivermectin, 0.40 mL glycerol formal and propylene glycol q.s. ad 1 mL. IVOMEC Injection is formulated to deliver the recommended dose level of 200 µg ivermectin per kg of body weight in cattle and sheep when given subcutaneously at the rate of 1 mL per 50 kg. In swine, IVOMEC Injection is formulated to deliver the recommended dose level of 300 µg ivermectin per kg body weight when given subcutaneously at the rate of 1 mL per 33 kg. Studies show that IVOMEC Injection is stable for five years when stored under normal conditions.

Features of Injections For Sheep

Always try to inject the animal where there is a clean area on the body, avoiding injecting through dried on muck on wet areas.  For subcutaneous (under the skin injections) grab a fold of skin in the neck area (behind or below the ear or behind the shoulder) and inject into the skin.  If administrating more than one injection on the same side of the neck, the injection sites should be a hands width (approx. 4 inches apart).

Mode of action

Ivermectin is a member of the macrocyclic lactone class of endectocides which have a unique mode of action. Compounds of the class bind selectively and with high affinity to glutamate-gated chloride ion channels which occur in invertebrate nerve and muscle cells. This leads to an increase in the permeability of the cell membrane to chloride ions with hyperpolarization of the nerve or muscle cell, resulting in paralysis and death of the parasite. Compounds of this class may also interact with other ligand-gated chloride channels, such as those gated by the neurotransmitter gamma-aminobutyric acid (GABA).

The margin of safety for compounds of this class is attributable to the fact that mammals do not have glutamate-gated chloride channels, the macrocyclic lactones have a low affinity for other mammalian ligand-gated channels and they do not readily cross the blood-brain barrier.


1. Do not administer intravenously or intramuscularly.

2. Transitory discomfort has been observed in some animals following subcutaneous administration. A low incidence of soft tissue swelling at the injection site has been observed. These reactions have disappeared without treatment. Divide doses greater than 10 mL between injection sites to reduce occasional discomfort to site reaction. Different sites should be used for other parenteral products.

3. Sheep: Following subcutaneous injections activity suggesting pain, sometimes intense but usually transient, has been seen in some sheep.

Adequate vaccination against clostridial infections in sheep is recommended.

Consult your veterinarian for advice on a vaccination program.

4. Cattle: To prevent potential secondary reactions when treating infections with cattle grubs, consult your veterinarian on the correct timing of treatment.

Prices of Injections For Sheep

$29.95 – $371.51 

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