溶血卵磷脂对肉仔鸡脂类代谢的影响

选200羽1日龄AA肉仔鸡,随机分成对照组和试验组(每组10个重复),试验组日粮添加0.1%溶血卵磷脂,研究溶血卵磷脂对肉鸡脂类代谢的影响。结果表明:溶血卵磷脂降低肝脏系数和肝脂率(P>0.05)、血清总甘油三酯与低密度脂蛋白胆固醇(LDL-C)(P>0.05)、LDL-C/HDL-C和葡萄糖含量(P<0.05),提高高密度脂蛋白胆固醇(HDL-C)和游离脂肪酸含量(P<0.05),上调肉仔鸡肝脏载脂蛋白B(P<0.01)和脂肪酸合成酶(P=0.155)mRNA表达水平;而对肉仔鸡的42日龄体重、腹脂率、皮下脂肪厚、肌间脂肪厚、腿肌和胸肌含脂率以及血清总胆固醇、三碘甲腺原氨酸、四碘甲腺原氨酸、促甲状腺激素刺激激素和胰岛素含量均无显著影响(P>0.05)。结果提示:溶血卵磷脂对肉仔鸡有减少肝脂肪沉积及降血脂作用。

Effect of lysolecithin on lipid metabolism in broilers

Two hundreds of 1-day-old Arbor Acre broiler chicks were randomly allocated into control and treated groups with ten replicates,respectively.The trial diet was supplemented with 0.1 % lysolecithin to determine effects of lysolecithin on lipid metabolism in broilers.The results showed that lysolecithin supplementation decreased although not significant in the liver index,ether extract(EE) percentage,serum total triglyceride and LDL-C(P>0.05),but significant in LDL-C/HDL-C and serum glucose(P<0.05).Significant increases in HDL-C,free fatty acid(P<0.05) and hepatic expression of apolipoprotein B(P<0.01) were also observed in lysolecithin-supplemented birds,while the body weight and percentage of abdominal fat,subcutaneous fat depth,inter-muscular fat depth,EE percentage of breast,high muscle and concentrations of serum total cholesterol,T3,T4,TSH and INS at 42-day old were not affected(P>0.05).The results indicated that dietary lysolecithin could decrease hepatic fat accumulation and serum lipids level.