Saraswati TR, Manalu W, Ekastuti DR, Kusumorini N. Effect of Turmeric Powder to Estriol and Progesterone Hormone Profile of Laying Hens During One Cycle of Ovulation. Int. J. Poult. Sci. 2014;13(9):504–509. doi:10.3923/ijps.2014.504.509