The Feeding Value of a Rice Saccharification Residue for the Chicken

Rice saccharification residue (RSR), a by-product of Japanese rice wine, is evaluated as a feedingstuff for the chicken. Chicks fed a RSR-containing semipurified diet supplemented with arginine, glycine, lysine, methionine and threonine grew as well as the chicks fed a soyprotein diet supplemented with methionine and glycine. The trial used cockerels showed that digestibility, biological value and metabolizable energy value were 83%, 65% and 2.79kcal/g, respectively. Broilers fed practical type deits containing up to 6% protein equivalent RSR grew as well as broilers fed a practical type diet alone. Feeding practical type diets containing up to 6% protein equivalent of RSR showed that laying hens had a comparable performance as that of hens fed a practical corn-soybean diet. RSR protein only supplemented with lysine was effectively used as a protein supplement up to 6% protein equivalent for formulation of corn-soybean practical type diets for chickens.