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

Abstract 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