京红蛋鸡对硫酸钠的耐受性研究  

Study on the Tolerance of Jinghong Laying Hens to Dietary Sodium Sulfate

作　　者：卫舒敏[1] 岳洪源[1] 武书庚[1] 张海军[1] 王晶[1] 齐广海[1] 

机构地区：[1]农业部饲料生物技术重点开放实验室中国农业科学院饲料研究所,北京100081

出　　处：《动物营养学报》2015年第8期2493-2501,共9页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：现代农业产业技术体系(CARS-41-K13);家禽产业技术体系北京市创新团队(CARS-PSTP);国家科技支撑计划(2011BAD26B03)

摘　　要：本试验旨在研究京红蛋鸡对饲粮硫酸钠的耐受剂量。采用单因子随机区组设计,选用健康、体重均匀的21周龄京红蛋鸡360只,随机分为5个组（每个组6个重复,每个重复12只鸡）。分别饲喂添加0、0.6%、1.2%、1.8%和3.0%硫酸钠的饲粮,预试期1周,正试期8周。结果显示：试验后期（第5~8周）,1.8%和3.0%组产蛋率降低,与0.6%组差异显著（P〈0.05）。第4周,硫酸钠对蛋壳强度、蛋白高度、哈氏单位均有显著影响（P〈0.05）;0.6%组蛋壳强度最佳,极显著高于其他组（P〈0.01）。第8周,1.8%和3.0%蛋壳强度极显著低于对照组（P〈0.01）。饲粮中添加硫酸钠显著降低血液钾离子含量（P〈0.05）,并有提高氯离子含量的趋势（P〈0.10）。3.0%组红细胞数量极显著高于对照组（P〈0.01）。生化指标中,3.0%组的血液总蛋白、白蛋白、葡萄糖含量均显著低于其他各组（P〈0.05）。器官切片观察可见,1.8%和3.0%组肾小球水肿、肾小囊萎缩、肾间质发炎,肠道炎症。综上,饲粮中添加硫酸钠≥1.8%,会损害产蛋鸡的健康生长及生产,因此京红蛋鸡对饲粮硫酸钠的耐受剂量为1.2%。The current study was conducted with the aim to explore the tolerant dosage of dietary Na2SO4 in laying hens.Three hundred and sixty 21-week-age Jinghong laying hens were randomly assigned to 5 groups and were fed based diet with 0（control）,0.6%,1.2%,1.8%,3.0% Na2SO4 for 8 weeks,respectively.Each group consisted of 6 replicates per group and 12 hens per replicate.The pre-test lasted for 1 week,and the test lasted for 8 weeks.The results showed as follows： in the later stage（from 5 to 8 week）,layers fed 1.8% or 3.0% Na2SO4 diet had significantly increased ratio of feed to egg compared with those fed 0.6% Na2SO4（P〈0.05）.On week 4 of experiment,dietary 0.6% Na2SO4 significantly increased the eggshell strength,albumen height and Haugh unit than other groups（P〈0.01）.On week 8 of experiment,layers in 1.8%,3.0% Na2SO4 group had significantly decreased eggshell strength（P〈0.01）.Dietary Na2SO4 markedly reduced the content of K ＋ in blood（P〈0.05）,and partially increased the content of Cl-in blood（P〈0.10） on week 8 of experiment.Compare with the control group,3.0% Na2SO4 group significantly increased the count of red blood cell.The concentration of blood total protein,albumin,glucose were significantly decreased by the supplementation of3.0% Na2SO4（P〈0.05）.The morphology assay of different organs showed that layers fed 1.8% or 3.0%Na2SO4diet had glomerular atrophy,inflammatory cells immersed in villous stroma of kidney and in intestine.In conclusion,it is damaged to health,growth and production of hens when diet adding with 1.8% Na2SO4,so the tolerant dose of the Na2SO4 to Jinghong laying hens can be recommended as 1.2% in diet.

关 键 词：硫酸钠 京红蛋鸡 耐受性 

分 类 号：S831.1[农业科学—畜牧学]