Effects of dietary supplementation with red yeast rice on laying performance, egg quality and serum traits of laying hens
文献类型: 外文期刊
第一作者: Sun, Hong
作者: Sun, Hong;Wu, Yifei;Wang, Xin;Liu, Yong;Yao, Xiaohong;Tang, Jiangwu
作者机构:
关键词: Laying hen;Performance;Red yeast rice;Serum traits;Egg quality
期刊名称:ITALIAN JOURNAL OF ANIMAL SCIENCE ( 影响因子:2.217; 五年影响因子:2.376 )
ISSN: 1594-4077
年卷期: 2015 年 14 卷 3 期
页码:
收录情况: SCI
摘要: To determine the influence of red yeast rice on production performance, egg quality and serum traits of laying hens, 288 laying hens (40-week-old) were randomly assigned into four groups with 6 replications of 12 birds each. Hens were provided with diets containing 0, 0.5, 1 and 5 g/kg red yeast rice for 8-weeks. Results showed that dietary supplementation of red yeast rice had no effect (P>0.05) on laying performance over the entire feeding period. Albumen height (quadratic, cubic, P<0.05) and Haugh units (quadratic, P<0.05) were increased with gradient addition of red yeast rice. Moreover, albumen height and Haugh units were higher (P<0.05) in 1 and 5 g/kg red yeast rice groups, with an exception of albumen height in 1 g/kg group at day 28. Yolk cholesterol content was lower (P<0.05) in 5 g/kg red yeast rice-supplemented group at day 56. There were decreased (P<0.05) contents of serum cholesterol and triglyceride, but higher (P<0.05) concentration of serum calcium in the 1 and 5 g/kg red yeast rice-treated hens compared with the control group. Serum level of very-low-density lipoprotein was also reduced (P<0.05) in 5 g/kg red yeast rice-treated hens. The results suggest that red yeast rice could lower serum and egg yolk cholesterol levels and improve the egg quality in laying hens.
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