P. C. SAXENA, D. P. TIWARI, A. KUMAR, and B. C. MONDAL, “Effect of dietary supplementation of copper and phosphorus on nutrient utilizationand growth in crossbred heifers”, Indian J of Anim Sci, vol. 80, no. 1, Jan. 2011, Accessed: Jun. 03, 2026. [Online]. Available: https://epubs.icar.org.in/index.php/IJAnS/article/view/2736