Widiastuti E, Isroli I, Murwani R, Sartono T A, Wahyuni H I, Yudiarti T and Sugiharto S 2019 Dietary supplementation of butyric acid, probiotic Bacillus subtilis or their combination on weight gain, internal organ weight and carcass traits of the Indonesian indigenous crossbred chickens. Livestock Research for Rural Development. Volume 31, Article #134. Retrieved , from http://www.lrrd.org/lrrd31/9/endwi31134.html