But in so doing, we understand that regardless of what we do, that particular animal will not outperform another with better genetics managed the same way. Hence, the simple statement that genetics determines potential becomes an objective in breeding livestock, that objective being to apply our knowledge of genetics to ensure we have the best potential we can achieve for that conception. In previous papers, many genetic arrows were already suggested and discussed, including EPDs, DNA analysis, marker-assisted selection, and crossbreeding. In this paper, I want to look at these and other arrows in a systematic way and relate them to the obstacles we face when applying them to the traits of interest. Each component has a very precise objective.
Selection is designed to change frequencies of beneficial genes in the population.
Mating systems are designed to optimize gene combinations. They are not mutually exclusive. The outcome of a mating system can be enhanced by the selection of superior animals going into the program. A few comments on each would be beneficial to understanding how we can best use both. Selection depends on assessment.