Muhammad Shuaib, Abdul Hafeez, Sarzamin khan, Muhammad Shahkar Uzair, Abubakar Sufyan and Muhammad Ayaz, 2024. Effect of β-Mannanase and Soybean Hulls on the Nutrient Digestibility, Digesta Viscosity, Feces Consistency and Intestinal Histomorphology During Early Peak Production Period in Laying Hens. Pakistan J. Zool., 56: 1501-1507. DOI: https://dx.doi.org/10.17582/journal.pjz/20221117091159