Husmaini, Sabrina, F. Arlina, E. Purwati, S.N. Aritonang, and H. Abbas. 2017. “Impact of Administration Age of Probiotic Lactococcus Plantarum on the Intestinal Microflora and Performance of Broilers”. Pakistan Journal of Nutrition 16 (5): 359–363. https://doi.org/10.3923/pjn.2017.359.363.