Supplementation with green tea extract affects lipid metabolism and egg yolk lipid composition in laying hens

Jinbao Huang; Qing Hao; Qiushi Wang; Yijun Wang; Xiaochun Wan; Yibin Zhou

Journal of Applied Poultry Research (Dec 2019)

Supplementation with green tea extract affects lipid metabolism and egg yolk lipid composition in laying hens

Jinbao Huang,
Qing Hao,
Qiushi Wang,
Yijun Wang,
Xiaochun Wan,
Yibin Zhou

Affiliations

Jinbao Huang: State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China; International Joint Research Laboratory of Tea Chemistry and Health Effects, Anhui Agricultural University, Hefei, Anhui 230036, China
Qing Hao: State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China
Qiushi Wang: State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China
Yijun Wang: State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China; International Joint Research Laboratory of Tea Chemistry and Health Effects, Anhui Agricultural University, Hefei, Anhui 230036, China
Xiaochun Wan: State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China; International Joint Research Laboratory of Tea Chemistry and Health Effects, Anhui Agricultural University, Hefei, Anhui 230036, China
Yibin Zhou: State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China; Corresponding author

Journal volume & issue: Vol. 28, no. 4
pp. 881 – 891

Abstract

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SUMMARY: Green tea extract (GTE) was fed to laying hens to determine its effects on lipid metabolism and egg production in the hens and the fatty acid composition in the egg yolk. Laying hens (288; 30-wk-old) were subjected to dietary treatments of GTE at a dose of 0%, 0.1%, or 0.3% (w/w) for 8 wk. In the hens, dietary GTE significantly decreased the levels of serum total cholesterol and low-density lipoprotein cholesterol, mitigated the over deposition of abdominal fat, and increased the excretion of total fecal lipid and fecal cholesterol. GTE treatment did not alter the laying performance or the egg physical traits. In the egg yolk, a low dose of GTE (0.1%) significantly increased the concentrations of arachidonic acid (22.6%), docosahexaenoic acid (34.3%), and total polyunsaturated fatty acids (23.5%) after 8 wk of treatment. Supplementation with 0.1% GTE for 4 and 8 wk decreased the yolk cholesterol content by 16.6% and 19.1%, respectively. And 2 doses of GTE had the same effects in altering egg yolk fatty acid composition. Our data demonstrated that GTE supplementation in the diets of laying hens improved the egg yolk lipid composition without altering production performance.

Published in Journal of Applied Poultry Research

ISSN: 1056-6171 (Print); 1537-0437 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Agriculture: Animal culture; Technology: Chemical technology: Food processing and manufacture
Website: https://www.journals.elsevier.com/journal-of-applied-poultry-research

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