Astuti, et al. “Use of Lactate Acid Bacterium, Streptococcus Thermophilus and Fish Waste Feces to the Blood Cholesterol Level of Broiler Chicken Lohman Strain”. International Journal of Poultry Science, vol. 14, no. 1, Dec. 2014, pp. 49–56, https://doi.org/10.3923/ijps.2015.49.56.