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草业学报 ›› 2012, Vol. 21 ›› Issue (3): 275-280.

• 研究论文 • 上一篇    下一篇

草地施肥对牧草和放牧贵州半细毛羊的影响

申小云1,5,蒋会梅2,苑荣3,贾志海4*   

  1. 1.毕节学院草业生态研究所,贵州 毕节 551700;
    2.毕节地区畜牧技术推广站,贵州 毕节 551700;
    3.兰州大学干旱和草地生态教育部重点实验室,甘肃 兰州 730000;
    4.中国农业大学动物科技学院,北京100094;
    5.重庆科技学院草食动物研究所,重庆 40133
  • 出版日期:2012-06-20 发布日期:2012-06-20
  • 通讯作者: E-mail:jzh331@cau.edu.cn
  • 作者简介:申小云(1971-),男,湖南邵东人,教授,博士。
  • 基金资助:
    国家科技部毕节专项(2010-2012),现代农业产业技术体系专项资金(CARS-40-30),贵州省人民政府省长基金(2009129),贵州省科技支撑计划项目(NY20103041)和省院地合作项目(2010-04)资助。

Effect of nitrogen fertilizer source on mineral element content of forage and in
the blood of grazing Guizhou semi-fine sheep

SHEN Xiao-yun1,5, JIANG Hui-mei2, YUAN rong3, JIA Zhi-hai4   

  1. 1.Pratacultural Ecology Institute, Bijie University, Beijing 10000, China;
    2.Bijie District Animal Husbandry Station, Bijie 551700;
    3.MOE Key Laboratory of Arid and Grassland Ecology, Lanzhou University, Lanzhou 730000, China;
    4.College of Animal Science & Technology, China Agricultural University, Beijing 100094, China;
    5.Institute of Herbivore, Chongqing University of Science and Technology, Chongqing 401331, China)
  • Online:2012-06-20 Published:2012-06-20

摘要: 为评价草地施肥对放牧贵州半细毛羊的影响,在威宁县凉水沟退化人工草地上进行了(NH4)2SO4和NH4NO3施肥和放牧试验。结果表明,草地施肥极显著增加牧草氮(N)含量,但各施肥处理之间没有显著差异。(NH4)2SO4施肥极显著增加牧草S、Mn和Zn含量,减少牧草Se含量。试验结束时,施(NH4)2SO4草地半细毛羊血液中Cu、Fe和Se含量极显著低于施NH4NO3草地和对照草地,家畜血液Mn、Zn和S含量极显著高于NH4NO3施肥牧场和对照牧场。(NH4)2SO4施肥牧场贵州半细毛羊血红蛋白(Hb)和红细胞压积容量(PCV)以及血清Cp含量、血清SOD活力、血清GSH-PX活力和血清CAT活力极显著低于NH4NO3施肥牧场和对照牧场,血液其他矿质元素和血液指标及血清生化值在2个施肥处理和对照之间均差异不显著。因此得出结论,威宁县凉水沟天然草地不适合用(NH4)2SO4施肥。

Abstract: To assess the impact of fertilization on mineral element content in the forage and in blood of grazing Guizhou semi-fine sheep, fertilization and grazing experiments were conducted in the Liangshuiguo pasture area of Weining county. The average concentrations of N in the forages from the fertilized pastures were significantly higher than in those from the control but there were no significant differences between the fertilized pastures. The average concentrations of S, Mn and Zn in forages from the pastures fertilized with ammonium sulfate were significantly higher than those treated with other fertilizers. The application of ammonium sulfate led to a significant reduction in selenium content of the forages. At the end of the study period, the Cu, Fe and Se contents in the blood of Guizhou semi-fine sheep from pastures fertilized with ammonium sulfate were significantly lower than in those fertilized with ammonium nitrate and from the control while the Mn, Zn and S contents were significantly higher. The blood hemoglobin (Hb), packed cell volume (PCV) and serum ceruloplasmin (Cp) contents and the activities of serum SOD, glutathione peroxidase (GSH-PX) and CAT of Guizhou semi-fine sheep from the pastures fertilized with ammonium sulfate were significantly lower than in those fertilized with ammonium nitrate and from the control. Thus, Liangshuiguo pasture area should not be fertilized with ammonium sulfate.

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