高锌对天府肉鹅免疫功能的影响  

Effects of high zinc on immune function of Tianfu goslings

作　　者：彭西[1] 崔恒敏[1] 邓俊良[1] 赵翠燕[1] 黎德兵[1] 

机构地区：[1]四川农业大学动物科技学院,四川雅安625014

出　　处：《中国兽医科技》2005年第8期648-652,共5页Chinese Journal of Veterinary Science and Technology

基　　金：四川省教育厅重点项目(川教计[1998]143号);四川省人事厅学术带头人培养基金项目(川人专[1999]6号)

摘　　要：将1日龄天府肉鹅健雏200只随机分为A、B、C、D共4组,A组作为对照组仅喂基础日粮(Zn100mg/kg),B、C、D组分别饲喂基础日粮+Zn900mg/kg、基础日粮+Zn1400mg/kg和基础日粮+Zn1900mg/kg,试验期7周,以研究高剂量锌对雏鹅免疫功能的影响。结果,与对照组相比,高锌的B、C和D组雏鹅淋巴器官发育受阻,胸腺、腔上囊和脾的器官生长指数程度不同地降低;胸腺、腔上囊和脾淋巴细胞数量减少、变性、坏死;淋巴细胞分裂增殖受抑,胸腺、腔上囊、脾和外周血淋巴细胞分裂指数程度不同地降低。结果表明,日粮高锌可致雏鹅免疫功能受损。The experiment was conducted to study effects of high zinc on immune function in goslings. 200 one-day-old Tianfu goslings were divided randomly into Group A（control）, B, C and D, and fed on diets as follow： basic diet （Zn 100 mg/kg in control）, and high zinc diets（Zn 100-1-900 mg/kg in Group B, Zn 100-1-1 400 mg/kg in Group C, Zn 100-1-1 900 mg/kg in Group D） for seven weeks. Growth indexes of thymus, bursa of Fabricius and spleen in Group B, C and D were much lower than that in control group. At the same time, lymphocytes of thymus, bursa of Fabricius and spleen were depleted, degenerated and necrotic histopathologically. The lymphocytes proliferating indexes of thymus, bursa of Fabricius, spleen and blood in high zinc groups decreased significantly when compared with that in control group. The above-mentioned results showed that proliferation of lymphocytes was impaired by high zinc.

关 键 词：高锌 病理学 免疫功能 雏鹅 

分 类 号：S858.33[农业科学—临床兽医学] S857.33[农业科学—兽医学]