Ruakiwi Polled Herefords Ltd specializing in Top Quality Commercial Polled Hereford stock from Topline Purebred Bulls. Our Sale season starts in September every year. We at Ruakiwi Herefords strive to produce commercial Bulls that provide exceptional results for our clients. Our sire bulls are selected for their low birth weight and high growth rates. These traits are as important to us, as all herd replacements are mated as yearlings. Hereford Bulls for Sale. Contact Us.