Final answer:
Animals in mills or concentrated animal feeding operations often suffer from anxiety disorders due to stress from confinement, lack of natural behaviors, and possible ingestion of contaminated food or water. The confined conditions and use of antimicrobials can also lead to health issues affecting mental well-being. Different types of animals may show diverse behavioral responses to their conditions.
Step-by-step explanation:
Animals produced in mills, such as those in concentrated animal feeding operations (CAFOs), may experience mental health issues due to the stressful and confined conditions in which they live. One prevalent mental health problem in such animals is anxiety disorders. This condition is not all that different from the most common mental disorders among humans in the United States, which also include anxiety disorders. In the context of farms or mills, factors such as close confinement, the inability to express natural behaviors, and sometimes the ingestion of contaminated food or water, can all contribute to stress and anxiety in animals.
Additionally, the use of antimicrobials to promote growth can affect an animal's microbiome, leading to other health issues that can indirectly influence mental well-being. Specific conditions such as Tail Biting Syndrome in pigs, which is often seen in factory farming, can be a manifestation of stress and poor welfare.
Experimental animals, such as those in biomedical laboratories, come from various sources and may also be exposed to stress that leads to mental health issues. However, knowing the exact mental issues in animals produced in mills can be complex, as different kinds of animals exhibit different behavioral responses to stress and confinement.