According to Llewellyn Angus, while visual appraisal remains important, it is impossible to judge an animal’s genetic make-up by its appearance. When selecting an animal, use all available EBV data based on genetic value only, then inspect the animal for visible attributes. Respected show judge and Simbra and Simmentaler breeder Llewellyn Angus has received many awards for his animals and his contribution to the industry. Here he shares his 12 fundamental principles of accurate performance testing and the use of estimated breeding values. Breeding beef cattle for greater efficiency and sustained profit is both a science and an art. But there are some basic principles of performance testing, as well as estimated breeding values (EBVs) and their use, that any beef cattle producer can implement to improve his or her herd. Some of these principles are discussed below. 1. The bigger the group of animals to test the better When weaning animals, weigh them all, including those being culle
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