Shrivastav, A.K., Johri, T.S. and Dash, B.B. (2005) “Dietary level of choline in relation to methionine for egg production and immune response in quails”, The Indian Journal of Animal Sciences, 75(8). Available at: https://epubs.icar.org.in/index.php/IJAnS/article/view/9454 (Accessed: 23 October 2025).