Rubber seed oil supplementation enriches n-3 polyunsaturated fatty acids and reduces cholesterol contents of egg yolks in laying hens

•Dietary rubber seed oil had no negative influences on egg performance parameters.•Rubber seed oil significantly improved n-3 PUFA contents in yolks.•Yolk n-6/n-3 ratio were gradually reduced with increasing rubber seed oil levels.•Addition of rubber seed oil in feed decreased yolk cholesterol conte...

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Bibliographic Details
Published in:Food chemistry 2019-12, Vol.301, p.125198-125198, Article 125198
Main Authors: Wen, Zhiguo, Wu, Yongbao, Qi, Zhiguo, Li, Xiumei, Li, Fuhuang, Wu, Xuezhuang, Yang, Peilong
Format: Article
Language:English
Subjects:
Cholesterol
Eggs
Enrichment
N-3 polyunsaturated fatty acids
Rubber seed oil
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Summary:•Dietary rubber seed oil had no negative influences on egg performance parameters.•Rubber seed oil significantly improved n-3 PUFA contents in yolks.•Yolk n-6/n-3 ratio were gradually reduced with increasing rubber seed oil levels.•Addition of rubber seed oil in feed decreased yolk cholesterol contents. The experiment was conducted to evaluate the effects of five rubber seed oil (RSO) levels (0, 1%, 2%, 4%, and 6%) on hens laying performance, egg quality, and yolks fatty acid composition and cholesterol contents. Three hundred and sixty 30-week-old Lohmann Brown laying hens were allotted to 5 groups. The results showed that the egg production was increased in 4% RSO group (P  0.05). Yolk cholesterol contents were reduced in RSO supplemental groups (P 
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2019.125198