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Pakistan Journal of Nutrition
Year: 2012  |  Volume: 11  |  Issue: 9  |  Page No.: 849 - 854

Effect of Dietary Chromium Supplementation on Growth Performance, Rumen Fermentation Characteristics and Some Blood Serum Units of Fattening Dairy Calves under Heat Stress

M.A. Soltan, A.M. Almujalli, M.A. Mandour and M. El-Shinway Abeer    

Abstract: Twenty four fattening dairy calves were assigned to investigate the effect of dietary Chromium (Cr) supplementation (0 or 3 mg Cr/head/day from organic preparation) on the growth performance and rumen fermentation characteristics as well as on some blood serum parameters under heat stress (35-40°C). Chromium supplementation significantly (p<0.05) increased total feed intake across the whole experimental period by about 10% when compared with the control. Moreover chromium supplementation improve body weight at the end of the experiment, weight gain and feed conversion ratio across the whole experiment by about 7.5%, 13% and 2.7% respectively when compared with the control. Serum insulin concentration increased whereas cortisol concentration decreased, when compared with the control group. Also Cr supplementation showed a trend towards improving rumen fermentation characteristics. It could be concluded that dietary Cr supplementation at level of 6 mg/head/day may offer a potential protective management practice to lessen the effect of heat stress in fattening dairy calves.

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