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Asian-Australas J Anim Sci > Accepted Articles
DOI: https://doi.org/10.5713/ajas.17.0289    [Accepted] Published online August 22, 2017.
Effects of Chromium Picolinate on Fat Deposition, Activity and Genetic Expression of Lipid Metabolism-Related Enzymes in 21 Day Old Ross Broilers
Guangxin Chen1, Zhenhua Gao3, Wenhui Chu1, Zan Cao3, Chunyi Li1, Haiping Zhao1,*
1Institute of Special Animal and Plant Sciences of Chinese Academy of Agricultural Science, Changchun , China
2State Key Laboratory of Special Animal Molecular Biology, Changchun City, China
3College of Agriculture, Guangdong Ocean University, Zhanjiang City, China
Correspondence:  Haiping Zhao, Tel: 18143102126, Fax: 0431-81919800, Email: zhaohaiping@caas.cn
Received: 15 April 2017   • Revised: 5 June 2017   • Accepted: 21 August 2017
Abstract
Objective: This experiment was conducted to investigate the effects of Chromium Picolinate (CrP) on fat deposition, genetic expression and enzymatic activity of lipid metabolism-related enzymes.

Methods

Two hundred forty one-day-old Ross broilers were randomly divided into 5 groups with 4 replicates per group and 12 Ross Broiler chicks per replicate. The normal control group was fed a basal diet, and the other groups fed the same basal diet supplemented with 0.1, 0.2, 0.4 and 0.8 mg/kg CrP respectively. The experiment was lasted for 21 days.

Results

Added CrP in the basal diet decreased the abdominal fat, had no effects on subcutaneous fat thickness and inter-muscular fat width; 0.2mg/kg CrP group significantly decreased the fatty acid synthase (FAS) enzymatic (P<0.05); Acetyl-CoA carboxylase (ACC) enzymatic activity decreased in all CrP groups (P<0.05); Hormone-sensitive lipase (HSL) enzymatic activity also decreased, but the change was not significant (P>0.05); 0.4mg/kg CrP group significantly decreased the lipoprotein lipase (LPL) enzymatic activity. FAS mRNA expression increased in all experimental groups, and the LPL mRNA expression significantly increased in all experimental groups (P<0.05), but not 0.2 mg/kg CrP group.
Conclusion
The results indicated that adding CrP in basal diet decrease the abdominal fat percentage, had no effects on subcutaneous fat thickness and inter-muscular fat width, decreased the enzymatic activity of FAS, ACC, LPL and HSL, increased the genetic expression levels of FAS and LPL.
Keywords: Ross broiler; CrP; FAS; ACC; HSL; LPL; Enzymatic activity


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