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Chromium supplementation effects on serum nitrogen constituents of dairy cows in late gestation and early lactation | ||
| Euphrates Journal of Agriculture Science | ||
| Article 1, Volume 3, Issue 0, 2011, Pages 239-242 | ||
| Author | ||
| M.R. Targhibi | ||
| Abstract | ||
| Abstract : This study was performed to evaluate the effect of chromium supplementation as chromium-L-methionine (Cr-Met) on some blood constituents of Holstein dairy cows in late gestation and early lactation. Sixty multiparous Holstein dairy cows were divided equally into two groups according to prior lactation, parity, body weight and expected calving date. Group 1 received no Cr supplement and served as control. Group 2, received supplemental Cr at manufacturer’s recommended level (8 mg/head per day) from days 21 before expected calving date until days 21 of lactation. Blood samples were collected at days -7, 0 and 21 relative to actual calving time for determination of serum protein fraction and urea nitrogen. Adding chromium to the diet of dairy cows increased albumin and albumin to globulin ratio in days 21 postpartum. Supplemental Cr had no effect on serum urea concentration in periparturient period. The results suggest that Cr supplementation had positive effect on some aspects of nitrogen constituents of dairy cow in early lactation. Keywords: chromium, late gestation, albumin | ||
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