To cite this article: Deba, F., Nelofer, R. and Irfan, M., 2023. Isolation, identification, and screening of keratinase producing bacteria from soil and production optimization using feather waste as substrate. Punjab Univ. J. Zool., 38(1): 109-118. https://dx.doi.org/10.17582/journal.pujz/2023.38.1.109.118