LFP 211: Livestock Farm Practice (0+1)

IMMUNITY

• When a vaccine for any particular disease is injected into the animal body, after an interval of 14-21 days, antibodies against the particular disease are produced, that cause active immunity against the disease. During this interval, before antibodies make their appearance, there is often increased susceptibility to the disease in question.
• The duration for which immunity is imparted varies from vaccine to vaccine. Against certain diseases a booster dose is required after the first vaccination for achieving stronger immunity.