Studies on the biological and economic factors involved in fish culture, with special reference to Scotland

Abstract

The Intensive cultivation of fish and shellfish for human consumption has recently attracted interest in Scotland, particularly in the area whose activities are assisted by the Highlands and Islands Development Board. A study was performed to consider the biological and economic factors relevant to commercial investment in fish culture in this region. It was considered that the study should closely examine these aspects of the culture of rainbow trout (Salmo gairdneri). Particular attention was paid to the sequence of decisions which require to be taken when planning a trout farm. An analysis of the economic aspects demonstrated that costs are dominated by feed costs and that profitability is particularly sensitive to changes in operating costs and revenues. It would appear that investments in this field are likely to provide low discounted financial returns at the present time, especially when the high risk element is considered. Certain implications for the future of Scottish trout culture were briefly examined.