The soya bean (with 44% protein) is an excellent source of energy and protein, in particular lisine, and also contains significant proportions of essential nutrients such as linoleic acid and choline that are highly available. Despite its high nutritional value, the raw soya bean contains a good number of anti-nutritional factors, and for this reason, the content is reduced to safe values after a correct heating process.

Sunflower flour is a protein concentrate, which also supplies fibre to diets. It is obtained from the seed once the oil has been extracted. It is used in animal feeds above all for ruminants either as an entire seed or in the form of flour.