Soltan M, Almujalli A, Mandour M, Abeer MES. Effect of Dietary Chromium Supplementation on Growth Performance, Rumen Fermentation Characteristics and Some Blood Serum Units of Fattening Dairy Calves under Heat Stress. Pak. J. Nutr. 2012;11(9):849–854. doi:10.3923/pjn.2012.849.854