In selecting the most desirable breed or breed combination and selecting within a breed, one needs to start with specifying the breeding objective. The economic importance of each trait depends largely on the production circumstances. In more intense production systems, productivity may take a higher priority. However, little information is available on breeding objective for the range of production systems and agro-ecological zones in Africa. Developing breeding objectives is the first objective of this study, which is expected to provide guidance for people involved in genetic improvement programs.
Genetic progress depends on selection intensity and accuracy of breeding values.
Both factors are related to female reproductive capacity. This leads to higher selection intensity and accuracy of selection and subsequently increased rates of genetic gain. These techniques also increase the rate of dissemination of tested superior genotypes in commercial populations. The latter application requires a well structured breeding population and might, therefore, have only very limited application. Alternative schemes for delivery of genetically improved stock to the farmers will be described and evaluated.