Isa Beefmasters is the 4th generation of the Lasater family developing high-performance Beefmaster genetics in West Texas near San Angelo. The Beefmaster breed was founded by company president Lorenzo Lasater's grandfather in 1937. Beefmasters are a composite breed made up of roughly one-half Bos Taurus (Hereford and Shorthorn) and one-half Bos Indicus (Nelore from Brazil, Gir and Guzerat from India). Eighty-plus years of intense, yet balanced selection for economically important traits has created a homozygous beef breed with the explosive growth potential of a hybrid. The company specializes in high-performance Beefmaster genetics for grass-based beef cattle producers. We sell 200 bulls annually, with a 150 head auction the first Saturday each October (2021 marks our 60th sale!) and 50 bulls private treaty each spring. Additionally, we offer select groups of females throughout the year as well as semen and embryos from the L Bar herd. The L Bar brand was first registered in South Texas in 1890.