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.
The objectives of a breeding program are defined, and the search begins for animals that best meet the criteria set in those objectives. It is immediately obvious that data and a system to transform that data into information are required. It is as obvious that we lack data for many important traits. Animals are ranked on this information, and those closest to the breeding objectives are chosen as parents. The breeding objectives can be simple or complex.