L-GLUTAMIC ACID MOTHER LIQUOR FERMENTED F ROM CANE MOLASSES AS A FEEDADDITIVE

The use of L-glutamic acid mother liquor as a livestock feed additive was studied. The mother liquor was fermented from cane molasses and mo nosodium glutamate was removed. The pH of the fermented broth was adju sted to 3.2. The mother liquor was then concentrated, which caused dis soluble L-glutamic acid to crystallize, giving a second mother liquor. This mother liquor was electrodialyzed, and 90% of the minerals disso lved in it were removed. The chemical properties of the remaining moth er liquor and the possibility of its use as a livestock feed additive were studied. Digestible crude protein accounted for 12.8% of the weig ht of the mother liquor, and total digestible nutrients accounted for 37.1%. The lethal dose for 50% of test mice was 37 g/kg of body weight in the test of acute toxicity. The addition of the mother liquor to f eed for growing swine improved palatability (increased feed intake). T he addition of the mother liquor to feed for fattening cattle gave pal atability equal to that when cane molasses was added to the feed. Dail y body weight gain, feed intake, and the feed conversion rate were sup erior to those with feed containing soybean meal and urea.