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SUMMARY
The implications of a tropical climate and of a low level of management and nutrition on poultry breeding for egg production are discussed. It is known that differences between breeds and individuals exist in their ability to withstand such an unfavourable environment, and that therefore the sciences of genetics and physiology must be utilized for the development of breeds of poultry best adapted to such conditions.
The influence of climatic factors and a low plane of nutrition on egg production is described in some detail. Evidence shows existence of interactions between genotype and environment for specific traits. Some of these interactions are of a non-linear nature, and breeding for such traits must be in the environment under which these fowls or their progeny will be kept by the egg producer.
The breeding methods available for the improvement of the genotype of fowls sutable for egg production in the S/W Pacific environment are mentioned. It is suggested that the the most efficient breeding system can only be chosen after more scientific knowledge has become available to determine the desirable genotype for an environment characterized by a tropical climate and a low level of poultry husbandry.