Which legislation mandates the compulsory immunization of livestock against communicable diseases?

The correct answer pertains to legislation that explicitly addresses the compulsory immunization of livestock against communicable diseases. This requirement is crucial for public health and the overall control of infectious diseases that can potentially affect both animal and human populations.

The specific law that mandates such immunizations is RA 9482, known as the "Anti-Rabies Act of 2007," which emphasizes the necessity of immunizing animals against rabies to prevent the spread of this disease. It reflects the importance of vaccination in controlling communicable diseases within livestock that have potential zoonotic implications.

The other pieces of legislation serve different purposes: the "Batang Pambansa Bilang 97" does not address animal health or vaccination; the "Animal Welfare Act" focuses on the humane treatment of animals rather than vaccination mandates; and the "Philippine Veterinary Act" primarily establishes the professional standards for veterinarians rather than direct immunization mandates. Therefore, understanding the specific intent and scope of these laws helps clarify why RA 9482 is the appropriate choice regarding mandatory immunization of livestock.