Aatif Masood Ahmad Khan, Masood Rabbani, Arfan Ahmad, Muhammad Wasim and Sohail Raza. 2025. Comparative Efficacy of Commercial and Autogenous Avibacterium paragallinarum Vaccines in Layer Chickens in Pakistan,. Pakistan J. Zool., 57: 141-149. DOI: https://dx.doi.org/10.17582/journal.pjz/20221229051239