I44 SYMPOSIUM PROCEEDINGS I967or father. He is followed by the other productive members of the family, i.e. the elder sons and younger brothers. Other older children come next and often the mothers and toddlers are last to be considered. Obviously a programme aimed at the toddler will fail if the type of food it receives is acceptable to the other members of the family, unless there is enough for all.T h e animal husbandman is being faced with rising costs all round and a shorter working week. He generally tries to find cheap sources of energy and protein and dietary regimes which will give a considerable concentration of these per unit dry weight. He also wishes to cash in on the most efficient periods of growth and other productions in respect of nutrient utilization. He tries to find labour-saving devices -including changes in dietary pattern-particularly at weekends, but you will hear more about all this from the experts who are with us today.