氧化锌对断奶仔猪生产性能和体液免疫的影响  

Effects of ZnO on growth performance and humoral immunity in weaned piglets

作　　者：王飞[1] 龚月生[1] 吕明斌 李勇 

机构地区：[1]西北农林科技大学动物科技学院,陕西省杨陵712100 [2]山东六和集团有限公司

出　　处：《中国饲料》2007年第10期12-13,15,共3页China Feed

摘　　要：本试验研究了不同添加水平的氧化锌对断奶仔猪生产性能和体液免疫的影响。选择96头21日龄健康三元(杜×长×大)杂交断奶仔猪,平均体重(6.87±0.53)kg,按体重和性别分成4个处理组,每处理组3个重复。第1组为对照组,饲喂玉米-豆粕型基础日粮+金霉素100mg/kg,第2、3、4组为试验组,在基础日粮中添加氧化锌,添加水平依次为900、1800、3400mg/kg。研究结果表明,各试验组日增重、料肉比显著改善(P<0.05),腹泻率显著下降(P<0.05),同时添加氧化锌还可以提高仔猪血清IgG、IgA、IgM含量,使仔猪体液免疫功能得到增强。This experiment was designed to study the effects of ZnO on growth performance in early-weaned piglets. A total of 96 crossed piglets （DurocxLandrancexLarge white）with 21 days of age, （6.87±0.53）kg BW were divided into 4 groups,with 3 replicates per treatment by weight and gender.The basal diet was corn-soybean meal.The first group was fed with basal diet adding 100mg/kg chlortetracycline （control group）.Group 2,3,4 were fed with basal diets adding ZnO 900,1800,3400 mg/kg,respectively.The results showed that the average daily gain and the feed conversion of trail groups were significantly improved （P 〈 0.05）.The diarrhea rate of trail groups significantly decreased （P 〈 0.05）.IgG and IgA concentration increased with increase of zinc level.It seemed that high level of zinc had greater improvement on humoral immunity.

关 键 词：断奶仔猪 氧化锌 生产性能 体液免疫 

分 类 号：S816.72[农业科学—饲料科学] S828.5[农业科学—畜牧学]