To cite this article: Jabeen, S., Avais, M., Khan, J.A., Ashraf, K. and Anjum, A.A., 2024. Preliminary assessment of newly developed Escherichia coli mastitis vaccines in laboratory animals: Promising results. Punjab Univ. J. Zool., 39(1): 53-60. https://dx.doi.org/10.17582/journal.pujz/2024/39.1.53.60