Muhammad Tahir Khan, Hazrat Salman Sidique,, Haq Aman Ullah, Muhammad Mobashar, Muhammad Ishtiaq, & Sohail Mehmood. " 86. Effect of different levels of fibrolytic enzyme on feed digestibility and production performance in lactating dairy cows." Pure and Applied Biology (PAB) [Online], 9.1 (0): 918-924. Web. 5 Jun. 2020