Calf Castration: Bands, Burdizzo or Knife? (Beef Code)

When to castrate calves, how banding, Burdizzo and surgical castration differ, and the Code of Practice pain-control rule, quoted from the BCRC.

Short answer: The Beef Cattle Research Council (BCRC) says: "Perform castration when the animal is as young as possible, ideally soon after birth." It also says: "Pain mitigation must be used when castrating bulls older than six months of age as indicated in the Code of Practice for the Care and Handling of Beef Cattle (2013)." Which method and which pain control fit your calves is a question for your veterinarian.

When should calves be castrated?

The BCRC's timing advice: "Castrate calves at the youngest age practically possible, and prior to weaning. When possible, avoid castrating during fly and insect season." Its key points add: "Avoid castration during weaning or other stressful events."

What does the Code of Practice require?

The BCRC sums up two requirements from the Code of Practice for the Care and Handling of Beef Cattle (2013): "Castration must be performed by an experienced person using proper, clean, well-maintained equipment and accepted techniques." and the six-month pain-mitigation rule quoted above. The beef cattle Code is being updated (the BCRC posted a call for public input on it in May 2026), so check nfacc.ca for the version in force.

Banding: elastrator rings and bands

In the BCRC's words: "Elastrator banding involves using a specialized tool to place a purpose-designed rubber ring or latex band around the scrotum, between the testicles and the abdomen."

The BCRC warns about "belly nuts", a retained testicle that was pushed up into the body cavity with the ring placed below it, and says: "If this happens at banding, cut the band off and try again."

For older calves it says: "Older animals may be banded using latex bands, however they may have an increased risk of tetanus. Producers should consult their veterinarians about providing additional vaccination protection."

Banding tools, rings and bands we list:

Check each product page for the animal size and ring or band it is made for.

Burdizzo (clamp)

The BCRC describes it this way: "A Burdizzo is a specially designed clamp that is used to physically crush the testicular cord through the scrotal skin."

Burdizzo clamps we list:

Surgical (knife) castration

"Surgical castration involves making an incision into the scrotum followed by the physical extraction of both testes." Under the Code, castration by any method is done by an experienced person with clean, well-maintained equipment; if that is not you, it is your veterinarian.

Scalpels, blades and handles we list:

Pain control

The BCRC states: "All methods of castration are painful." and "Producers should consult with their veterinarians on the best methods to manage pain during and after castration." On method, it says: "There is no clear evidence that either surgical or banding castration produce better animal performance."

For needle sizes and injection sites when your veterinarian sets up a vaccine or pain-control program, see our guide Cattle Needle Size Chart: Gauge, Length, Syringes and Injection Sites.

Source: Beef Cattle Research Council, "Castration in Beef Cattle" topic page (BeefResearch.ca; content last reviewed October 2025), viewed October 2026. Product names as listed.

Calf Castration: Bands, Burdizzo or Knife? What the BCRC and the Beef Code Say