中国畜牧杂志2018，Vol.54Issue(4)：55-60,6.DOI:10.19556/j.0258-7033.2018-04-055
蛋氨酸锌对蛋鸡消化酶活性、蛋黄微量元素沉积、抗氧化及免疫指标的影响
Effects of Zinc-Methionine on Digestive Enzyme Activity, Yolk Trace Element Accumulation, Antioxidant Capacity and Serum Immune Indices of Laying Hens
摘要
Abstract
This experiment was conducted to investigate the effects of different dietary zinc-methionine supplemental levels on digestive activity,yolk trace element accumulation,antioxidant capacity and immune indices of laying hens.Five hundred and forty 20-week-old healthy Hyline White laying hens with similar body weight and laying rate were randomly allocated to 6 groups with 6 replicates per group and 15 birds per replicate.Hens in the control group was fed a basal diet,and hens in experimental groups received the basal diets supplemented with 70,350,700 and 1 400 mg/kg zinc-methionine,respectively.The trail lasted for eight weeks.The results showed as follows:compared with control group,activities of amylase and protease in duodenum and protease ileum were remarkably improved (P＜0.05),CuZn-SOD activity and T-AOC were remarkably improved (P＜0.05) but MDA content was notably decreased (P＜0.05) in serum and liver,IgA and IgG in serum were notably increased (P＜0.05) in hens from group Ⅱ and Ⅲ,no significant differences were observed among group Ⅰ,Ⅱ or Ⅲ,however,activities of amylase and protease in duodenum and protease ileum were remarkably decreased (P＜0.05),CuZn-SOD activity and T-AOC were remarkably reduced (P＜0.05) but MDA content was notably increased (P＜0.05) in serum and liver,IgA and IgG in serum were notably increased (P＜0.05).Compared with control group,zinc content in egg yolk was significantly increased in hens from group Ⅱ,Ⅲ,Ⅳ and V (P＜0.05),whereas zinc content was notably increased (P＜0.01) and copper and iron contents in yolk were remarkably decreased in hens from group Ⅵ (P＜0.01).The optimal supplemental level was 60～100 mg/kg while hens acquire high activities of digestive enzymes as well as good antioxidant and immune properties based on quadratic curve fitting analysis.关键词
蛋氨酸锌/消化酶活性/微量元素沉积/抗氧化能力/免疫指标/蛋鸡Key words
Zinc-methionine/Digestive activity/Trace Element accumulation/Antioxidant capacity/Immune indices/Laying hens分类
农业科技引用本文复制引用
陈娜娜,侯川川,马莲香,郭阳,何俊娜,余东游..蛋氨酸锌对蛋鸡消化酶活性、蛋黄微量元素沉积、抗氧化及免疫指标的影响[J].中国畜牧杂志,2018,54(4):55-60,6.基金项目
“十二五”国家科技支撑计划(2013BAD20802) （2013BAD20802）
农业部饲料质量监管专项(2014) （2014）
