Feed attractants and protein quality mean less waste

Feeding high protein diets to fish and shrimp may mean faster growth, but can be expensive and often wasteful. Less expensive protein sources can be a false economy as they often have low palatability and are less digestible, often leading to environmental as well as economic problems. Good evaluation of protein quality and the use of feeding attractants may help to reduce the problem. Measures, to ensure that all feed offered to animals in commercial operation is consumed and, to reduce formul