Summary

An experiment is planned to compare and select an indigenous Ethiopian goat genotype that best meets the body weight and meat quality import requirements of Middle East countries. Three genotypes are to be used in an experiment in which three different feeding regimes are also to be compared.

The case study illustrates how a study protocol is prepared to describe the genotypes and feeding regimes to be used, the details of the experimental design, the measurements to be made and the statistical analysis proposed for a completely randomised factorial design.

The case study then goes on to discuss the appropriateness of the study designs used in the protocol and uses a number of study questions to allow the student to investigate the issues further. Two short videos are also included, one to illustrate the form that a consultation between the researcher and the biometrician might take when discussing the design of such a study, and the second to illustrate how animal experiments are laid out.

The important need for good biometrician researcher collaboration is emphasised.