Iowa Code
Chapter 169A - MARKING AND BRANDING OF LIVESTOCK
Section 169A.3 - Must be recorded.

169A.3 Must be recorded.
Evidence of an animal’s ownership shall not be established in court by the animal’s brand, unless the animal is livestock, the brand complies with the requirements of this chapter, and the brand is recorded as provided in sections 169A.4 and 169A.6 or 169A.9.
[C66, 71, 73, 75, 77, 79, 81, §187.3]
C93, §169A.3
95 Acts, ch 60, §3