The nutritive value of herring ‘alkali-reduction’ meal for chicks

Abstract

1. Herring ‘alkali-reduction’ meal—a by-product from the alkali process of herring oil extraction—has been tested as a protein supplement for chicks.2. At high levels of feeding it was toxic.3. At low levels of feeding its nutritive value was low compared with other fish meals.4. The method of manufacture of reduction meal destroys vitamin B₁₂and cystine, but supplementation of the material with vitamin B₁₂and cystine did not greatly enhance its feeding value.