摘要
采用实用饲粮（玉米－多饼型，含锌３０ｍｇ／ｋｇ），对狄高肉鸡（４～６周龄）分别补加锌４０和８０ｍｇ／ｋｇ，研究微量元素Ｚｎ对试鸡组织锌含量、免疫器官生长发育及生产性能的影响。结果表明饲粮缺锌（含Ｚｎ３０ｍｇ／ｋｇ）不影响鸡体重、饲料转化率和心、肝、肾、胰、肌胃、脑千克活体重（Ｐ＞０．０５），但缺锌影响脾、胸腺、法氏囊、盲肠扁桃体、免疫器官及腺胃、小肠厚度、甲状腺生长发育（Ｐ＜０．０５或Ｐ＜０．０１）；饲粮补锌（４０、８０ｍｇ／ｋｇ）能改善免疫器官机能，增加胫骨、跗骨、趾骨、肝、胰、肾、心组织锌含量（Ｐ＜０．０５或Ｐ＜０．０１）；骨、肝、胰组织对饲粮锌缺乏较敏感，趾骨锌含量是标识鸡锌营养状况的灵敏指标。
An experiment was conducted with 4—6 wk TTEGEL to study the concentrations of zinc,immunological function and growth.A basal corn multiple meal diet(containing 30 mg/kg zine)was supplemented with 40 and 80 mg/kg from sulfate zinc,respectively.There were no differences in weight gains,feed conversion,weight of heart,liver,kidney,pancreas,brain and gizzard among treatments(P>0 05),but proventriculars,intestinal thickness,thyroid gland,spleen,thymus,Fabricius bursa and cecum tonsil(P<0 05 or P<0 01) Supplemental zinc increased the zinc concentrations of tibial bone,tarsometatarus,toe bone,liver,kidney,pancreas,improving immunological function for chickens (P<0 05 or P<0 01) Bone,liver and pancreas were sensitive tissue indexes of zinc deficiency.Toe bone was a sensitive tissue index of deficiency for living chickens.
出处
《畜牧与兽医》
北大核心
1998年第4期155-157,共3页
Animal Husbandry & Veterinary Medicine
关键词
鸡
实用饲粮
锌
组织锌
免疫器官
chickens
conventional diet
zinc
tissue zine
immunology function
