Muhammad Tahir Khan, Hazrat Salman Sidique,, Ullah, Haq Aman, Mobashar, Muhammad, Ishtiaq, Muhammad, AND Mehmood, Sohail. " 86. Effect of different levels of fibrolytic enzyme on feed digestibility and production performance in lactating dairy cows" Pure and Applied Biology (PAB) [Online], Volume 9 Number 1 (12 February 2020)