The vaccine commonly known as “CDT” or “CD&T” is a vaccination for Clostridium perfringens type C + D and tetanus. This is the vaccine that everyone raising goats should use.The label directions should be followed closely, including those for handling and storage.
Does should be vaccinated for CDT approximately 30 days prior to giving birth to provide protection to the kids through the first milk, or colostrum. If the doe has not been given a priming booster of two shots administered three to four weeks apart at some time in her life, the pre-kidding annual shot will not really be effective. This priming set of shots is usually given when the doe is a young kid but can be done at any age.
Kids should be vaccinated at 5 to 6 weeks of age and then given a booster three to four weeks later. Vaccination of kids from properly vaccinated does prior to 5 weeks of age may result in kids that are not protected and annual boosters may be ineffective.
Kids born to does with uncertain vaccination history or with questionable colostrum ingestion within the first 24 hours of birth should be vaccinated at 7 to 21 days of age and then given a booster three to four weeks later. Alternately, tetanus antitoxin (150 – 250 units) can be given at birth or at castration.
Breeding bucks, yearlings and other adults should get annual boosters 30 days prior to the breeding season or when others in the herd are given booster vaccines. New breeding bucks and does with unknown vaccination history should get two initial doses, three to six weeks apart, and then annually. Some research has shown that goats might benefit from booster vaccinations twice a year, six months apart.