All sires used in the Coodardie herd are the elite of the Supergene System (ranking 1 and 2 - Purple and Blue eartags). They are a refined line based on the old Australian bloodlines of Cherokee. The foundation cows, 12 matrons purchased in 1976, are from the very fertile and functional Tyagarah Brahman Stud. Continued easy-care attributes and performance under tough northern conditions are essential. Whilst the majority of sires are home bred some are from sister studs of Tyagarah and Wandarri.