By regulation, how many hours must milk from cows treated with antibiotics usually be withheld?

The correct answer states that milk from cows treated with antibiotics must be withheld for 48 to 72 hours. This withholding period is essential to ensure that any residues from the antibiotics are eliminated from the cow’s system before the milk is collected for human consumption. This practice is crucial for maintaining food safety and compliance with regulatory standards that safeguard the health of consumers. If milk is collected before the withholding period concludes, it could contain antibiotic residues that pose health risks to individuals who consume it. Hence, it's vital for dairy farmers and producers to adhere strictly to these regulations to prevent potential contamination and ensure the milk's quality and safety for the market.