To improve long-term overall production efficiency, cattle producers should place a high priority on identifying individual cattle and maintaining accurate records. One type of permanent identification is branding.
Although a fire brand can be applied, many producers prefer freeze branding. Freeze branding is performed using a coolant and copper or copper-alloy branding irons. Two common freeze branding methods include using either liquid nitrogen or a combination of dry ice and alcohol as a coolant. Producers who freeze brand may have better results with dry ice and alcohol, but locating a dry ice source can sometimes be difficult. Liquid nitrogen can be purchased from welding supply stores and artificial insemination companies. Producers who use artificial insemination and have an industry representative service their liquid nitrogen tanks every few months can take advantage of this access to prepare for freeze branding.
Freeze branding is relatively stress-free for the animal, and causes little or no damage to the hide. Unlike fire brands, freeze brands result in reduced incidences of blotching. However, compared to fire branding, freeze branding takes more time, can be more costly and the brands may not be as clear on all cattle.
It is best to freeze brand during the spring or fall months while the hair is growing. As the brand is applied, melanocytes (pigment-producing cells in the skin) are destroyed, and subsequent hair growth is white. New hair growth should appear in two to three months. Over time, freeze brands may fade, so consider an additional form of identification, such as tattooing, as a backup. The effectiveness of freeze branding is variable, and results are usually better for black and red cattle than for white cattle.
|Table 1. Advantages and Disadvantages of Freeze burning|
|Relatively painless||Time required to brand|
|Reduced hide damage||More expensive than fire branding|
|No blotching||Results may vary; does not work as well on cattle with light-colored hair.|
Tools Needed to Freeze Brand with Liquid Nitrogen
- Copper or copper-alloy branding irons (steel and brass irons have been used with poor success)
- 3 inches for calves
- 4 inches for mature cattle
- Liquid nitrogen
- Container to hold liquid nitrogen and branding irons while cooling
- Rice brush or curry comb
- Clippers with surgical blade
- 95% ? 99% isopropyl alcohol
Procedures (Results may vary)
- Place copper branding irons in liquid nitrogen.
- Wait 20 to 25 minutes for irons to cool to the proper temperature. A coat of ice will begin to migrate up the handle the irons cool.
- Secure the animal in a squeeze chute.
- Brush the intended brand location and remove all debris and loose hair.
- Clip the brand location using surgical clippers to ensure good contact between the iron and the hide.
- Brush the brand location a second time to remove loose hair.
- Saturate the brand location with 95 percent to 99 percent isopropyl alcohol (use a spray bottle or sponge).
- Apply the brand immediately. Research reports that calves should be branded for 20 to 24 seconds, while cows should be branded for 25 to 30 seconds. Variations in hair length can change the amount of time needed to apply a quality brand. If brands are applied too long, the results will mimic that of fire branding.
- Make sure the iron is free of debris and place it back in the liquid nitrogen.
- Allow the iron to cool for three to four minutes before using it again. When vigorous boiling ceases, the iron is ready. for branding.
Note: Two numbers can be applied at once, but this requires two people.
Do not freeze brand when it is rainy, windy or humid. If weather conditions aren?t optimal, the irons change temperature rapidly, thus hindering the branding effects.
Status and Revision History
Published on Dec 18, 2006
Published on Feb 04, 2009
In Review on Jan 05, 2010
Published with Minor Revisions on Feb 19, 2010
Published with Full Review on Mar 01, 2013
Published with Full Review on Mar 31, 2017