【摘要】 为评估大蒜素对蛋雏鸡免疫器官抗氧化能力及生产性能的影响,试验选择1日龄海兰褐蛋雏鸡200只,随机分为对照组和低、中、高剂量大蒜素组,每组50只,分别饲喂含大蒜素有效剂量为0、50、100和150 mg·kg^-1的混合基础饲料,每日定时喂料,每隔5 d统计周期饲料消耗量。35 d后,每组取20只蛋雏鸡,计算蛋雏鸡平均日增重、料重比,测定血清及免疫器官（脾脏、胸腺和法氏囊）中SOD、GSH-Px活性及MDA含量,剩余蛋雏鸡停止饲喂含有大蒜素的混合日粮并饲养至200日龄,检测产蛋率、料蛋比、畸形蛋比率。结果表明:与对照组相比,低、中、高剂量大蒜素组蛋雏鸡平均日增重、血清及免疫器官中SOD与GSH-Px活性、平均产蛋率显著升高,料重比、血清及免疫器官中MDA含量、料蛋比、畸形蛋比率显著下降,且上述结果存在剂量-效应关系,说明在日粮中添加大蒜素可增加蛋雏鸡机体及免疫器官的抗氧化能力,增加蛋鸡的生产性能。更多还原

【Abstract】 To investigate the effects of allicin on immune organs antioxidant function and growth performance of laying hens, Two hundred one-day-old healthy Hy-Line White laying hens were randomly divided into four groups, 50 in each group, which were control group（CG, basal diets without allicin）, low-dose groups(LG, basal diets with allicin 50 mg·kg^-1), medium-dose groups(MG, basal diets with allicin 100 mg·kg^-1) and high-dose group(HG, basal diets with allicin 150 mg·kg^-1), fed regularly every day and the feed consumption was counted every 5 days. After 35 days, the daily body weight gains and feed/weight ratio of 20 layer hens in each group were evaluated,the activity of SOD, GSH-Px, and contents of MDA in serum and immune organ were detected. The remaining 160 layer hens were stopped to feed allicin and raised to 200 days. The rate of producing eggs, feed/egg ratio, abnormal eggs rate were calculated. The results indicated that, compared with the CG, the average daily body weight gain, the activity of SOD and GSH-Px in serum and immune organs, and the average egg production rate in allicin treatment group were significantly increased, while the feed/gain ratio, the MDA content, feed/egg ratio and abnormal egg rate in allicin treatment group were significantly decreased, the above result were a dose-effect relationship, indicating that the addition of allicin to the diet promoted the ability of antioxidant and the growth performance of laying hens.更多还原