Secondary data were compiled and described using descriptive statistics as appropriate. Breeding data maintained by the research stations on the Ethiopian Boran and their crossbreeds were collected and used. The number of available data used for the analysis is summarized in Table 1. The number of records available for some of the traits was very limited. Fortunately, there was reasonable spread of data across subclasses and dependency was not a problem. As a result of the differences in available records and factors fitted, the model degrees of freedom varied greatly between traits. In addition, performance records for all traits were.
