Biological Trace Element Research

, Volume 155, Issue 2, pp 221–227 | Cite as

Effect of Dietary Yeast Chromium and l-Carnitine on Lipid Metabolism of Sheep

  • Bingrui Zhou
  • Hongwei Wang
  • Guangying Luo
  • Ruiyan Niu
  • Jundong WangEmail author


A 56-day feeding experiment was conducted to investigate the effects of yeast chromium (Cr, 300 μg/kg diet) and/or l-carnitine (100 mg/kg diet) on lipid metabolism and their interaction in sheep. After a 14-day adaptation period, 32 3-month-old sheep were randomly divided into four groups of eight. All sheep were fed with basal diets according to the American feeding standard of the National Research Council. At the end of the experiment, yeast Cr and/or l-carnitine supplementation significantly decreased abdominal fat mass and abdominal fat percentage, suggesting an improved mutton quality. Compared with the control group, the ratio of glucose to insulin was significantly increased, due to unchanged glucose levels and reduced insulin levels in yeast Cr and/or l-carnitine supplement groups, indicating high insulin sensitivity and well-controlled serum glucose levels. In addition, yeast chromium and/or l-carnitine induced significant decreases in serum triglyceride levels and serum total cholesterol levels, while increasing serum free fatty acid levels and high-density lipoproteincholesterol levels. The findings show that adding a yeast Cr and/or l-carnitine supplement may give better control of glucose and lipid variables.


Yeast chromium l-carnitine Sheep Lipid metabolism Interaction 



This work was supported by China National Natural Science Foundation (grant no. 31172376), the Shanxi Province Natural Science Foundation (grant no. 2011021030–3), and the Program for the Top Young Academic Leader of Higher Learning Institution of Shanxi.


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Bingrui Zhou
    • 1
  • Hongwei Wang
    • 1
  • Guangying Luo
    • 1
  • Ruiyan Niu
    • 1
  • Jundong Wang
    • 1
    Email author
  1. 1.Shanxi Key Laboratory of Ecological Animal Science and Environmental MedicineShanxi Agricultural UniversityTaiguPeople’s Republic of China

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