The present investigation was conducted at the Bull Mother Experimental Farm, College of Veterinary Science & ., Anjora, Durg. Age group of Sahiwal cattle 0 to 6 and 6 to 12 months, the days required for appearance of white hairs was relatively lesser (± and ± days) at 7 and 8 seconds, respectively for copper metal during freeze branding. | Studies on exposure time for freeze branding using copper and brass metal in Sahiwal cattle