Or. Admin. R. 603-012-0021
Eligible cattle destined for slaughter at all livestock auction markets must be identified by a Department approved backtag applied by auction market personnel under the supervision of a brand inspector or other authorized Department representative before such cattle leave the market zone. Backtags shall be applied in such a manner and location as specified by the Department. The backtags and glue for application may be furnished by the Department at no cost to the livestock auction market.
ORS 596, 597 & 599
ORS 599.490
AD 850(22-67), f. 9-5-67, ef. 9-13-67