Effect of Selenium-enriched Japanese Radish Sprouts and Rhodobacter capsulatus on the Cholesterol and Immune Response of Laying Hens
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Immune response and yolk cholesterol are crucial factors for commercial chicken producers. The objectives of this study were to investigate the effect of selenium-enriched Japanese radish sprouts (Se-enriched JRS) and R. capsulatus synergistically on immune response and cholesterol in laying hens. A total of 50 laying hens (20-wk old) were assigned to 5 dietary treatment groups, and fed diets supplemented with 2.5 mu g/kg, 5 mu g/kg, 10 mu g/kg Se-enriched JRS and 5 mu g/kg Se-enriched JRS+R. capsulatus (0.02%). Egg production and yolk color were significantly improved by the supplementation of Se-enriched JRS+R. capsulatus in the layer diet (p<0.05). Compared to the control, serum cholesterol concentration and triglyceride levels were decreased by all the treatments (p<0.05). After 8-wk of the experiment, supplementation of 5 mu g/kg, 10 mu g/kg and Se-enriched JRS+R. capsulatus significantly reduced yolk cholesterol and triglycerides, while the greatest reduction was observed when R. capsulatus was incorporated with Se-enriched JRS. Spleen, bursa and thymus weight were significantly increased by both the 5 mu g/kg and 10 mu g/kg Se-enriched JRS. Compared to the control, supplementation of 5 mu g/kg and 10 mu g/kg Se-enriched JRS significantly increased serum IgG and yolk IgY concentration and foot web index activity by Newcastle Disease Virus (p<0.05). After 4-wk and 8-wk of supplementation, the highest number of leukocytes was observed with Se-enriched JRS+R. capsulatus (p<0.05). The highest concentration of serum and yolk Se was found in Se-enriched JRS plus R. capsulatus treatment. Combined dietary supplementation of Se-enriched JRS and R. capsulatus might be beneficial for better health, disease protection and overall production performance.
- ASIAN-AUSTRALASIAN ASSOC ANIMAL PRODUCTION SOCの論文
ASIAN-AUSTRALASIAN ASSOC ANIMAL PRODUCTION SOC | 論文
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- Effect of Selenium-enriched Japanese Radish Sprouts and Rhodobacter capsulatus on the Cholesterol and Immune Response of Laying Hens