A method for production of an animal feed product comprises: a) partial hydrolysis of a fermentation feedstock or the non-ethanol by-product of a fermentation process performed on a fermentation feedstock, which partial hydrolysis converts non starch polysaccharides to soluble oligomers and monomers； b) fermentation of the soluble oligomers and monomers in the partially hydrolysed feedstock or non-ethanol by-product to produce ethanol； e) recovery of the non-ethanol by-product from the fermentation of step b) to produce an animal feed product more specifically an animal feed product with improved nutritional content. A method for production of an animal feed product comprises: a) partial hydrolosis of the non ethanol by-product of a fermentation process performed on a fermentation feedstock, which partial hydrolysis converts non starch polysaccharides to soluble oligomers and monomers； b) recovery of the partially hydrolysed product from step a), to exclude the soluble oligomers and monomers, to produce an animal feed product, more specifically an animal feed product with improved nutritional content. The methods produce an animal feed product with improved nutritional content by virtue of decreased levels of pentose sugars, increased relative protein concentration, decreased relative fibre concentration, decreased levels of soluble oligomers and monomers or decreased levels of reducing sugars.
