Ask These Vaccination Questions Before You Bid
A seller who says the animals have a “full health program” or are “vaccinated for everything” has told you almost nothing useful. Vaccine records are one of the few pieces of information that can actually change what you pay and how you manage the animal once it arrives. Without dates, product names, and confirmation of boosters, you are guessing whether the animal fits your herd’s protection or whether you will need to restart the program from scratch.
Why Vague Claims Cost Money
Most commercial vaccines need a priming dose and a booster given three to four weeks later before they deliver full protection. A single shot given the week before sale does not equal a completed protocol. Animals that have never received the initial series will need both doses after they arrive, which means extra handling, extra cost, and a longer period of incomplete immunity while they settle.
Buyers who skip the questions often discover the gap only after the animal is home and the quarantine period is already running. Restarting vaccines during quarantine is possible, but it adds stress on top of transport stress and delays the moment the new animal can safely join the group.
Core Questions for Cattle
Ask these before you place a bid or transfer money:
- Which products were used and on what dates? Request the trade names. A 5-way viral vaccine covers IBR, BVD types 1 and 2, PI3, and BRSV. A 7-way or 8-way clostridial covers blackleg and related organisms. Knowing the exact product tells you what is covered and whether a booster is still due.
- Were both the primary and booster doses given? Many catalogues list only the most recent shot. Confirm the animal received the initial series, not just a recent booster.
- Is the animal officially calfhood vaccinated for brucellosis? Breeding heifers in many regions need the RB51 vaccine given between 4 and 12 months by an accredited veterinarian, with the official tag and tattoo. This status travels with the animal and matters for interstate movement and some buyers.
- What reproductive vaccines were given? Breeding cattle usually receive leptospirosis and, where relevant, vibriosis (campylobacter) vaccines. Ask whether these were given before the last breeding season.
- Any recent treatments or deworming? Vaccination history sits next to treatment records. A recent dewormer or antibiotic does not replace vaccines, but it shows how the seller manages the group.
If the seller cannot answer with dates or product names, treat the animal as unvaccinated for planning purposes. You can still buy it, but budget for a full restart and keep the quarantine period intact.
Questions for Sheep and Goats
Small ruminants have a shorter core list, but the same principle applies.
- Has the animal received CD&T (Clostridium perfringens C & D plus tetanus)? This is the foundation vaccine for almost every sheep and goat operation. Lambs and kids normally get the first dose around 6–8 weeks and a booster four weeks later, then annual boosters. Pregnant does and ewes usually receive a booster in the last month before kidding or lambing so antibodies reach the colostrum.
- Were both doses of the primary series completed? A single CD&T shot leaves a gap. Confirm the booster was given.
- Any additional vaccines for the farm’s risk? Some operations use vaccines against caseous lymphadenitis, orf, or specific abortion agents. Ask only for what the seller actually uses; do not assume a full list.
- Rabies status where relevant? In areas with wildlife reservoirs, many vets recommend rabies vaccination even though most products are used off-label in goats. Confirm whether it was given and when the next booster is due.
What to Do When Records Are Missing
Absence of records is common, especially with smaller sellers or animals that changed hands more than once. The practical response is simple:
- Plan to restart the core vaccines after the animal has settled in quarantine.
- Keep the new arrival isolated for the full period recommended by your veterinarian (often 14 days or longer).
- Work with your own vet to decide which products match your farm’s risks rather than trying to reconstruct an unknown history.
- Document everything you give so the next buyer, or your own records, stay clear.
A seller who keeps written records and can answer these questions quickly is usually easier to deal with on other points as well. The reverse is also true: vague answers on health often pair with vague answers on age, breeding history, or previous ownership.
Practical Takeaways
- Ask for product names and exact dates, not general statements.
- Confirm both primary and booster doses for core vaccines.
- For cattle, check brucellosis calfhood vaccination status on breeding females.
- For sheep and goats, prioritise CD&T history and any pre-kidding or pre-lambing boosters.
- If records are incomplete, treat the animal as unvaccinated and restart under your own vet’s protocol after quarantine.
Clear answers before money changes hands reduce the chance of paying breeding prices for an animal that still needs a full vaccination series. The questions take only a few minutes in the listing conversation or at the pen side, and they give you a concrete plan for the weeks after arrival.
