【摘要】 为了研究大豆异黄酮(Soy isoflavones,ISO)对蛋鸡免疫性能的影响,在试验组(T组)日粮中添加大豆异黄酮提取物20 mg/kg,对照组(C组)饲喂基础日粮,分别于7、14、21、28、35日龄随机抽取T组和C组蛋鸡各5只取样检测。结果显示,大豆异黄酮能提高7~35日龄试验组蛋鸡的腔上囊指数、胸腺指数和脾脏指数,但差异不显著;增加外周血和脾脏的CD3+、CD4+含量及CD4+/CD8+比值,但差异不显著;能提高试验组鸡气管液、胆汁、肠液的Ig G、Ig M含量:气管液中Ig G含量在28日龄差异显著(P<0.05),Ig M含量在7、14、28、35日龄差异显著(P<0.05);肠液中Ig G含量在14、28日龄差异显著(P<0.05),Ig M含量在7日龄差异显著(P<0.05)。胆汁中Ig M含量在7日龄差异显著(P<0.05)。因此大豆异黄酮可以促进蛋鸡免疫器官发育,提高其免疫功能。更多还原

【Abstract】 The aim of study was to investigate the effect of soy isoflavones on immune function of chicken. Concentration of 20mg/kg soy isoflavones were fed to experimental group chicken,the chickens of T groups and C groups were sacrificed at the age of7,14,21,28,35 days,respectively. The results showed that Isoflavones increased spleen index, thymus gland index and bursa offabricius index,but were not statistically significant(P>0.05),the number of subsets T lymphocytes of CD3+,CD4+ and CD4+/CD8+ in peripheral blood and in spleen was augmented at the ages of 7-35 days,but was not statistically significant;relative con-tent of Ig G was significantl enhanced at the ages of 28 days in trachea fluid compared with those of without isoflavones(P<0.05).there was a dramatic enhance in the relative content of Ig M in trachea fluid of the chicken at the age of 7,14,28 and 35 days(P<0.05).And in intestinal fluid,the relative content of Ig G was enhanced at the ages of 14 and 28 days(P<0.05);the relative contentof Ig M was enhanced at the ages of 7 days(P<0.05). The results showed that immune function was enhanced by fed 20 mg/kg ofsoy isoflavones.更多还原