This new guide provides information and advice to those concerned with the production and sale of eggs in developing countries with an emphasis on marketing, i.e. producing in order to meet market demand. Augmenting the production of laying chickens and improving farmers' returns by effective production planning and marketing will improve farm incomes, and will help to meet the nutritional needs of growing populations in developing countries. These chickens are prolific, easy to raise and their output can be generally expanded more rapidly and easily than that of other livestock. Furthermore, they are adaptable to various climates and altitudes. Poultry raising is an excellent diversification activity for small farmers. In addition, poultry raising can often be combined with other types of farming and offers the possibility to raise extra revenue for farmers.