Mulla, N. A., et al. “Use of Natural Insoluble Fiber in Oat Hulls (Avena Sativa) As Non-Antibiotic Growth Promoter in Broilers”. International Journal of Livestock Research, vol. 10, no. 8, Aug. 2020, pp. 156-64, doi:10.5455/ijlr.20200408045433.