M. Rasheed, M. Rashid, S. A. Mahmud, M. Yousaf, and M. Malik, “Digestible threonine and its effects on growth performance, gut morphology and carcass characteristics in broiler Japanese quails (<i>Coturnix coturnix japonica</i>)”, SA J. An. Sci., vol. 48, no. 4, May 2018.