Technologies to Improve Feeding Efficiency in Land-Based and Cage Culture Systems

摘要

Feeding strategy is a significant factor in the financial viability of an aquaculture venture, A nutritionally complete diet delivered in a ration that meets the needs of the fish for growth and health is essential to attain the market demands for a quality and safe food product. Additionally, feed is the ultimate source of manure and other metabolic waste by-products that are discharged into the water in fish culture operations. Feed, therefore, has a determining influence on the environmental effects of an aquaculture operation and achieving the low-waste potential of modern diets is also contingent upon an effective and efficient feeding strategy. Many factors influence feeding efficiency, including; the quality and digestibility of the diet, fish size, pellet size, water temperature, daily ration, and the time, frequency and method of feed delivery. The care with which the feeding strategy is developed, implemented and monitored is a major factor in determining whether or not production goals are met. These factors are reviewed in an effort to identify practical means to enhance feeding efficiency and environmental sustainability in the culture of rainbow trout.