Unconventional protein sources for poultry feeding - opportunities and threats

In search for sustainable alternatives for fish meal and overseas vegetable protein sources some selected protein sources were evaluated. These included oil seed co-products, grain legumes and their concentrates, insects, leaf and aquatic proteins, etc. These sources differ substantially in terms of protein yield, environmental sustainability, nutritional value and availability. Products with a low dry matter content, i.e. lucerne, leaves,...