O. H. Chaturvedi and T. K. Walli, “Effect of feeding graded levels of undegraded dietary protein on the flow rate of microbial nitrogen, dietary non-ammonia nitrogen and alpa amino nitrogen at abomasum in crossbred calves”, Indian J of Anim Sci, vol. 69, no. 12, Jul. 2012, Accessed: Oct. 23, 2025. [Online]. Available: https://epubs.icar.org.in/index.php/IJAnS/article/view/22020