Barua, S., Khan, M., Bhuiyan, A., Islam, M., & Islam, S. (2012). Supplementation Of Concentrate With Different Levels Of Protein On Nutrient Intake, Digestibility And Growth Of Red Chittagong Heifers. Bangladesh Journal of Animal Science, 37(1), 10–16. https://doi.org/10.3329/bjas.v37i1.9861