Final answer:
Passive immunity in adult animals can occur when antibodies are transferred to individuals, for instance, via antivenoms for snake bites or immunoglobulins for treating diseases like Ebola. These measures provide immediate protection without the need for the recipient's active immune response.
Step-by-step explanation:
Examples of Passive Immunity in Adult Animals
Passive immunity refers to the acquisition of antibodies without an individual’s immune system having to produce them. In adult animals, two primary examples of passive immunity include the transfer of antibodies in case of an active infection or as a prophylactic measure.
One example of artificial passive immunity is the administration of antivenoms to those bitten by venomous snakes. Antivenoms contain antibodies from an animal that has been immunized against the snake venom, providing immediate protection to the bitten individual.
Another instance involves the use of immunoglobulins to treat diseases. Here, antibodies from donors who have recovered from a disease, such as Ebola, are administered to patients currently suffering from Ebola to significantly lower mortality rates.
Both of these practices do not require the recipient's immune system to respond actively and produce antibodies. Instead, the ready-made antibodies offer immediate, albeit temporary protection.