| Effects of dietary conjugated linoleic acids on lipid metabolism and antioxidant capacity in laying hens. | |
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MedLine Citation:
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PMID: 22164957 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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To examine the effects of dietary conjugated linoleic acids (CLA) on lipid metabolism and antioxidant capacity in laying hens, Hy-Line Brown layers (n = 384, 52 weeks old) were randomly allocated to one of four dietary treatments. Each treatment had six replicates of 16 hens each. All birds were assigned to a corn-soybean meal-based diet containing a mixture of CLA at 0%, 1%, 2% or 4% for six weeks. With increasing dietary CLA, egg weight and feed intake decreased, and yolk colour was darkened. Feed efficiency was improved at 1% and 2% dietary CLA. Serum triglyceride concentration was significantly reduced by CLA in a dose dependent manner. A linear decrease in total cholesterol and low-density lipoprotein cholesterol, and an increase in high-density lipoprotein cholesterol levels were observed after CLA supplementation. With increasing dietary CLA, the deposition of two major isomers of CLA (c9, t11; t10, c12) in yolk lipids increased linearly, the proportion of saturated fatty acids increased and monounsaturated fatty acids decreased significantly. The proportion of polyunsaturated fatty acids was highest at 1% CLA. Compared to the control, CLA supplementation significantly increased the activities of superoxide dismutase and glutathione peroxidase, inhibited hydroxyl radicals and superoxide anion production, and decreased the malonaldehyde concentrations in both serum and liver. The results demonstrated that dietary CLA meliorated serum lipid profiles and enhanced the antioxidant capacity of laying hens. |
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Authors:
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Xiaolong Qi; Shugeng Wu; Haijun Zhang; Hongyuan Yue; Shaohui Xu; Feng Ji; Guanghai Qi |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Archives of animal nutrition Volume: 65 ISSN: 1745-039X ISO Abbreviation: Arch Anim Nutr Publication Date: 2011 Oct |
Date Detail:
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Created Date: 2011-12-12 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101222433 Medline TA: Arch Anim Nutr Country: England |
Other Details:
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Languages: eng Pagination: 354-65 Citation Subset: IM |
Affiliation:
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Key Laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, P.R. China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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