饲料中添加腐植酸对仔猪增重及免疫功能的影响

Effects of humic acid on weight gain and immune function in piglets

为探讨腐植酸对仔猪增重及免疫功能的影响。本试验选择35日龄健康杜×长×大三元杂交仔猪48头,随机分为4组,每组12头,每组设3个重复。一个对照组,其他3组为试验组(设高、中、低3个剂量组)。试验组腐植酸在基础日粮中的添加量分别为1000、100mg/kg和10mg/kg,连续饲喂仔猪10d后,进行称重、T淋巴细胞Ea花环率和B淋巴细胞EAC花环率的测定。结果表明,饲喂腐植酸的健康仔猪高剂量组增重效果显著高于对照组(P<0.05);中剂量组和高剂量组的Ea花环率显著高于对照组仔猪(P<0.05);中剂量组的EAC花环率显著高于对照组仔猪(P<0.05);高剂量组的EAC花环率极显著高于对照组仔猪(P<0.01)。这表明,饲喂高剂量腐植酸可以提高仔猪的增重;中剂量和高剂量腐植酸可显著改善仔猪机体的免疫水平。

To investigate the effect of humic acid on body weight and immune function of piglets, forty eight healthy three-way crossbred piglets （Durec×Landrace×Yorkshire）aged 35 days were divided into four groups randomly.One was control group,the others were experiment groups,which fed on basal diet and basal diets supplemented with humic acid at 1000,100 mg/kg and 10 mg/kg respectively.The experimental period lasted for 10 days.The body weight,T lymphocyte chaplet of Ea and B lymphocyte chaplet of EAC were determined, The results showed：the body weight of piglets in experiment group were significant difference with control group （P 〈 0.05）;chaplet of Ea on healthy piglets in meta-dose experiment group and hypsi-dose experiment group were significantly higher than that in control group （P 〈 0.05）;chaplet of EAC on healthy piglets in hypsi-dose experiment group were higher than that in control group （P 〈 0.01 ）.It indicated hypsi-dose humic acid could increase body weight of piglet,meta-dose hunic acid and hypsi-dose humic acid could improve the immunological function of piglets.