Short answer: The Beef Cattle Research Council (BCRC) says "Calves should be dehorned or disbudded at the youngest age possible, preferably while horn development is still at the horn bud stage (typically 2-3 months)." Before the buds attach, a calf can be disbudded with a dehorning paste or a hot iron; after they attach, the BCRC describes scoop or gouge dehorners such as the Barnes type. For pain control, talk to your veterinarian.
Key takeaways
- Timing first: the BCRC says "Horn buds attach to the skull when a calf is approximately two to three months of age."
- Disbudding (paste or hot iron) is for horn buds that have not attached; scoop dehorners are for young calves whose horns have attached.
- The beef Code of Practice sets who does it and with what tools, quoted below.
- "Dehorning should be avoided during weaning to reduce stress."
- Polled genetics remove the job altogether: "Breeding for polled cattle is a non-invasive way to dehorn cattle."
What does the Code of Practice require?
In the BCRC's summary: "The Code of Practice for the Care and Handling of Beef Cattle requires that dehorning is performed by an experienced person using proper, well-maintained tools and accepted techniques." It adds: "Producers should consult with their veterinarians regarding pain control when dehorning after horn buds have attached."
The beef Code (2013) is being updated; check nfacc.ca for the current version.
Disbudding: paste or hot iron
The BCRC: "Removing the horn buds before they become attached to the skull at two or three months of age is called disbudding."
Dehorning paste. "Chemical disbudding involves applying a caustic material, such as a hydroxide-based paste, to the horn buds to kill the horn-producing cells." The BCRC also says: "Calves that have had dehorning paste applied should be kept dry and away from other animals, including the mother cow, for approximately six hours post-application." The paste we list is DVL D-Horn Paste, 85 g squeeze bottle, a non-prescription veterinary drug (DIN 00654094, Dominion Veterinary Laboratories; topical; Marketed in Health Canada's Drug Product Database, checked October 13, 2026). Read its label for directions and precautions before use.
Hot iron. "Hot iron disbudding physically burns the horn-producing cells with a special tool." The hot-iron dehorners we list:
- Portasol Model 3 butane dehorner, with 15 mm and 18.5 mm dehorning tips
- Kerbl GasBuddex gas-operated dehorner with 20 mm tip and 2 cartridges and the Kerbl gas cartridge can, 110 ml
- Kerbl Buddex battery-operated horn remover
Follow each maker's instructions for heating and use.
Dehorning attached horns: scoop (Barnes) dehorners
Once horns have attached, the BCRC describes scoop tools: "Scoops or gouges are sharpened hinged tubes that slide over the horn and cut the horn along with the horn-producing cells." The Barnes-type dehorners we list come in two handle styles and two lengths:
- Barnes dehorner, straight handles, 13 inch
- Barnes dehorner, straight handles, 17 inch
- Barnes dehorner, curved handles, 13 inch
- Barnes dehorner, curved handles, 17 inch
On older cattle the BCRC is direct: "Dehorning larger animals is discouraged because of the increase in the size of the wound, the degree of injury and pain, risk of infection and recovery time." Talk to your veterinarian before dehorning grown cattle.
Pain control
We don't give pain-control advice. The BCRC's line is the one to follow: consult your veterinarian about pain control, especially once horn buds have attached. For castration, which is often done at the same handling, see our guide Calf Castration: Bands, Burdizzo or Knife? What the BCRC and the Beef Code Say.
Source: Beef Cattle Research Council, "Dehorning" (beefresearch.ca/topics/dehorning, content last reviewed September 2024), viewed October 2026; Health Canada Drug Product Database, D-HORN PASTE (DIN 00654094), viewed October 13, 2026.