Plant molecular breeding represents a new technology that adds to, rather than substitutes for, traditional breeding practice, and shares with it the same long-standing objectives: higher yield, better producís, better-adapted plants. Additionally, it allows the consideration of completely new applications: pharmaceuticals, industrial producís and bioremediation processes. Safety issues and the...

The objectives of this study were to derive economic values in broiler breeding and to determine their relationship with production circumstances. Economic values were derived using a deterministic economic model based on profit equations with a fixed amount of broiler meat output of the production system. Nonintegrated and the integrated broiler production systems were studied. The difference ...

Breeding objectives and their derivation are considered in relation to numerous changes occurring in genetics, in societal attitudes, and in the environment. We outline the experience in Australia with breeding objectives for beef cattle, sheep and pigs and discuss ramifications of the new developments for future objectives. Areas are suggested where more attention will be needed, and where the...

We propose a computational model of mating strategies for controlled animal breeding programs. A mating strategy in a controlled breeding program is a heuristic with some optimization criteria as a goal. Thus, it is appropriate to use the computational tools available for analysis of optimization heuristics. In this paper, we propose the first discrete model of the controlled animal breeding pr...

Multiple-objective programming was used to examine the effects various objectives had on the optimal portfolio of sires chosen for a given breeding problem in a Jersey cow dairy herd. It was assumed that the dairy producer had the following three objectives in the breeding decision: to maximize Net Merit, to minimize inbreeding, and to minimize total expenditure on semen. Integer programming mo...