Needle size varies by the injection route, animal size, and thickness of the injectable. Use the smallest needle possible to reduce discomfort. The smaller the gauge number, the bigger the needle. Sizes most commonly used in goats are 18, 20, and 22-gauge needles. Short needles, ½ to ¾ inches, are preferred for subcutaneous injections.
Intramuscular injections require longer and larger needles, ½ to 1½ inches, depending on the size of the goat. Needles dull quickly. Disposable needles and syringes are single-use. Reusing needles can spread infection and disease as well as cause pain, discomfort, and tissue damage.
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