Models for estimating feed intake in aquaculture: A review

The uptake of food in aquaculture is considered to be crucial in feeding systems and obviously affects the weight and diet conversion efficiency. Over-feeding may lead to feed waste, economic loss, and great waste output, whereas less feeding might result in less growth and economic loss. Mathematical models are indispensable in estimating the feed intake. Improving the product quality of aquaculture operations is of increasing interest. The present review summarizes the factors that influence the feed intake of aquatic animals, such as physiological factors, nutritional factors, environmental factors and husbandry factors. The intake models for different aquatic animals are briefly reviewed. Finally, the future prospects and challenges of estimating the feed intake of aquaculture are discussed.