Protecting Dairy Cattle: Safe Handling of Needles and Injectable Veterinary Products

Introduction

Proper handling of injectable veterinary products, such as vaccinations, antibiotics, and reproductive hormones, as well as the needles used to administer them, is essential for protecting animal health and preventing infection. Following a few key practices can help reduce the risk of abscesses, disease transmission, vaccine failure, and accidental injury.

Use One Needle Per Animal

Reusing needles may seem like a cost and time saving practice, but it is risky. It could result in broken or bent needles, the spread of contaminants found in dust and dirt between animals, and the potential spread of blood-borne pathogens, such as bovine leukemia virus, as well as injection-site lesions or abscesses. Always use a clean, sterile needle for each animal to prevent the spread of disease and improve animal welfare. If using a multi-dose syringe, ensure that you change the needle each time you refill the syringe (5–10 injections per needle).

Don’t Store the Needle in the Bottle

Do not leave needles inserted in the veterinary product bottle between uses. This can introduce bacteria and contaminate the entire contents of the vial. Instead, use one needle to draw the vaccine into the syringe, and a different one to administer the shot.

Proper Handling and Storage

Veterinary products must be stored according to label instructions, typically at refrigerated temperatures between 35°F and 45°F (2°C to 7°C). Use a dedicated, temperature-monitored refrigerator. Keep the products out of direct sunlight and avoid freezing them, which can damage their effectiveness. Transport vaccines in a cooler with ice packs to maintain the proper temperature during use in the field.

Correct Injection Site and Technique

Injections can cause bruising or muscle damage, especially if the needle has burrs from repeated use. This bruising and muscle damage affect the meat quality. Always follow the product label for proper dosage, route of administration (subcutaneous, intramuscular, or intravenous), treatment duration, and withholding time. Only place injections in clean areas free from mud and manure to reduce the risk of lesions and infection.

Use the injection site triangle located in the neck region for both beef and dairy animals. When administering multiple injections on the same day, space them 4 inches, or a hand’s distance apart. Don’t be afraid to use both sides of the animal’s neck. Less than 10 CCs should be injected per site; divide the total dose as needed. When administering both a subcutaneous injection and an intramuscular injection, ensure that the subcutaneous injection is placed below the intramuscular injection.  Subcutaneous injections require a head restraint to ensure the product is administered correctly. 

Safe Needle Disposal

Used needles should never be thrown in the trash, left on the ground, or reused. Always place them in a rigid, puncture-proof container labeled with the word “Sharps.” Empty laundry detergent or fabric softener containers work well for this purpose. Once the container is full, seal it and follow local regulations for proper disposal, which may include returning it to a veterinary clinic or designated drop-off site. Safe needle disposal helps prevent injuries, disease transmission, and environmental harm.