Explain the term "biosecurity" in animal farming.

Biosecurity in animal farming refers to the measures taken to protect livestock from diseases and pests. This involves implementing practices and protocols designed to minimize the risk of disease introduction and transmission within a herd or flock. Effective biosecurity measures can include things like controlling access to farms, sanitizing equipment, managing animal movement, and ensuring that feed and water supplies are free from contaminants.

By prioritizing biosecurity, farmers can safeguard the health and well-being of their animals, which ultimately leads to more sustainable and productive farming operations. The goal is to prevent disease outbreaks, which can have significant economic impacts and harm animal welfare. The other options involve strategies or standards that, while important in their own right, do not specifically address the fundamental concept of biosecurity as it relates to the protection against disease and pest threats in livestock.