A series of factors have contributed to the progressive diversification of
reproduction strategies to produce day-old chicks in distinct geographical
locations. Some of these strategies are adaptable by simple technology tran
sfer and education (e.g. darkout housing to control photoperiod, appropriat
e feeding and management of breeder flocks) while others require continued
efforts from geneticists and physiologists to develop new genetic lines and
tools (e.g. selection of breeds adapted for hot climates and gene banking)
. Reproduction strategies in broiler breeders will also probably continue t
o diversify depending on economic and social components, including labour a
nd feed costs as well as local regulations. As a consequence, the final cho
ice between natural mating or artificial insemination (for caged or floored
breeders) is itself multifactorial and may lead to the selection of parent
stock lines optimised for one or the other strategy, according to country
and living standards. Finally, the diversity in consumer demand for poultry
will itself favour the emergence of specialised birds and management techn
iques directly adapted to local needs.