Other research also showedthat good-quality SM can be
included up to 150 g/kg in poultry diets, but for optimal
growth and feed conversion efficiency, it should be supplemented with high-lysine ingredients such as soybean
meal or fishmeal (Ravindran and Blair, 1992). Mamputu
and Buhr (1995)reported that growth performance of broiler chicks fed diet containing 150g/kg SM was not different
from chicks fed the control diet; however, at dietary inclusion level of 300g/kg chick's performance was depressed.
In addition, Yamauchi et al.(2006)showed that up to
200g/kg SM could be incorporated into diets fed to male
birds of laying strains in the developer period.