Effects of Tea Polyphenols on Serum Lipid, Egg Yolk Cholesterol and Liver Lipid of Changshun Green-shell Laying Hens

• Ning LIU, 
• Bolin ZHANG, 
• Meilin HAO, 
• Peiyong SONG, 
• Hong ZHOU, 
• Shanshan HUANG, 
• Renhai QIN, 
• Huahua FENG