"Trigger-fed" refers to a method of feeding animals, particularly in farming or animal husbandry, where food is provided in response to a specific action or signal from the animal. This approach can help manage feeding times and ensure that animals receive their food when they are most active or in need of nutrition. In a broader context, the term can also apply to systems or devices that operate based on a trigger mechanism. For example, in automation technology, a trigger-fed system might dispense resources or perform tasks when certain conditions are met, enhancing efficiency and control in various applications.