At what point in the feeding process should lambs receive the enterotoxemia vaccination?

The correct timing for administering the enterotoxemia vaccination to lambs is when they start high concentrate feed. Enterotoxemia, often caused by the bacterium Clostridium perfringens type C or D, can occur when lambs consume a diet that is too rich in carbohydrates, leading to rapid fermentation and toxin production in the intestines.

When lambs transition to a high concentrate diet, their digestive systems may not be fully accustomed to the rapid changes in feed type and composition. Vaccinating at this point helps to prepare their immune systems to defend against the toxins produced by the bacteria that thrive in nutrient-rich environments. This vaccination is typically administered before or at the time of the dietary change to ensure they have adequate immunity as they begin consuming these potentially riskier feeds.

Timing the vaccination correctly is crucial for preventing the serious health issues associated with enterotoxemia, as the risk significantly increases once they are exposed to high-energy feeds.