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Ruminant Nutrition and Forage Utilization
Asian-Australasian Journal of Animal Sciences 2011;24(12): 1674-1680.
DOI: https://doi.org/10.5713/ajas.2011.11073    Published online October 24, 2011.
Effects of the Combination of Glucose, Chromium Picolinate, and Vitamin C on Lipid Metabolism in Steers
Hong-Gu Lee, Jin-Long Yin, Cheng-Xiong Xu, Zhong-Shan Hong, Zhe-Hu Lee, Yong-Cheng Jin, Chang-Weon Choi, Do-Hyeung Lee, Kyoung Hoon Kim, Yun-Jaie Choi
Abstract
This study was conducted to examine the effects of glucose, chromium picolinate (CrP), and vitamin C (Vit C) on lipid metabolism in Korean native steers fitted with indwelling catheters. A total of 12 Korean native steers were randomly allocated to the following treatments: 1) normal control diet, 2) same as 1) +250 g of glucose by intravenous (IV) infusion, 3) same as 2)+13.5 g CrP administered orally, and 4) same as 3)+2.52 g Vit C by IV infusion. Glucose, Vit C, and CrP treatments were administered for five days. At days 1 and 3, serum insulin was higher in treated animals than in those fed the control diet (p<0.05). Serum non-esterified fatty acid (NEFA) concentration in the steers on treatment 2), control+13.5 g CrP, was lower than those on other treatments at 90 min post-infusion on days 1 and 3 (p<0.05). The expression of peroxisome proliferator-activated receptor- (PPAR)2, stearoyl-CoA desaturase-1 (SCD), fatty acid synthase (FAS), and glucose transporter type 4 (Glut 4) in the longissimus muscle of steers on treatment 2 was higher than those on other treatments. In conclusion, the results suggest that CrP is associated with the regulation of gene expression involved in adipogenesis.
Keywords: Chromium Picolinate; Glucose; Lipid Metabolism; Steers; Vitamin C


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