As the theme of this conference is intensive animal production in developing countries, I will apply myself only to the design of farm buildings for the purpose of livestock production. It is important to understand that I am a farmer and not an architect or civil engineer. As such, I should be more attuned to the needs of the animal, which must represent the first criterion in building design in any circumstances. But that is not enough and, as a farmer, I am concerned to include ergonomic factors (that is the economies of labour use) and the commercial implications of any design. At the same time I must be conscious of the factors which influence architects, the materials available and the construction methods that are possible. In this regard I have the advantage of having at my disposal the Civil Engineering Division in our Company—Masstock.