What is the primary concern when administering Phenylbutazone to cattle?

• A. It is not effective for any pain
• B. It has a long withdrawal time
• C. It is illegal to use in cattle
• D. It causes liver damage

Answer: (B)

The primary concern when administering Phenylbutazone to cattle lies in its long withdrawal time. Withdrawal time refers to the period following the last administration of a drug during which the animal's tissues must be clear of the drug prior to slaughter or milk production. Phenylbutazone, being a non-steroidal anti-inflammatory drug (NSAID), is commonly used for its analgesic and anti-inflammatory properties, but it is crucial for livestock producers to ensure that the drug is cleared from the animal's system to meet regulatory standards and ensure food safety for consumers. The extended duration required for withdrawal can affect the timing of when an animal may be harvested for meat or milk, thereby impacting production schedules and compliance with food safety regulations.

In contrast, while it is true that Phenylbutazone is not effective for all types of pain, as a treatment option, it is effective for certain conditions in cattle. The legality of its use in cattle varies by region, and in some cases, it may indeed be legally permitted under veterinary supervision. Finally, while there are risks associated with the use of any medication, serious liver damage is not a commonly highlighted primary concern specific to Phenylbutazone in cattle practice when compared to the significant implications of its long