摘要
[目的]确定内蒙古苏尼特左旗北部地区春季发生的戈壁草原蒙古羊羔羊发病、死亡现象的主要原因。[方法]选取3户羔羊发病情况最为严重的牧户采样,每户各采集5只发病羔羊的血液样本、放牧草场的饮用水样本,以及羔羊所处环境中3种主要牧草(红砂、珍珠猪毛菜和盐爪爪)样本和土壤样本,同时采集当地种羊场15只相同品种健康羔羊的样本作为对照,测定上述样本中的10种矿物质元素(钙、磷、铁、锰、铜、锌、镁、钼、硒、钴)的含量。[结果]发病羔羊血液中铜和镁的含量显著(P<0.05)低于同品种健康羔羊,钼的含量显著(P<0.05)高于同品种健康羔羊,其他矿物质元素的含量差异不显著(P>0.05)。发病羔羊所处环境中饮用水的镁和钙含量较高。发病羔羊所处环境中红砂的钼、铁、锰和硒含量均高于文献报道值,其他矿物质元素含量均处于正常范围;盐爪爪的钼、铁、锰、硒、镁和钴的含量高于文献报道值,其他矿物质元素含量均处于正常范围;珍珠猪毛菜、红砂和盐爪爪的铜钼比分别为15.96∶1、0.23∶1和2.34∶1。发病羔羊所处环境中土壤样本的铜、铁、锰、硒、钴含量均低于文献报道值,镁、钙和磷含量均高于文献报道值,钼和锌含量在正常范围内。[结论]该地区戈壁草原蒙古羊羔羊发病、死亡的原因主要是放牧羊摄入铜不足、钼超标、铁和锰等矿物质元素摄入量过多,导致羔羊对铜的吸收发生障碍,最终引起继发性铜缺乏症。
[Objective] To determine the primary causes of sickness and mortality in Mongolian sheep lambs in Gobi grassland in northern Sonid Left Banner, Inner Mongolia, throughout the spring. [Method] Samples were taken from three family livestock farms with the most diseased lambs. Blood samples were taken from five diseased lambs from each farm. Samples of drinking water in grazing pastures were collected. Further more, three main forages(Reaumuria soongarica, Salsola passerina, and Kalidium foliatum) and soil samples from the lambs′ habitat were taken as well. Samples from 15 healthy lambs of the same breed were obtained as controls from a local breeding sheep farm. The concentrations of ten mineral elements(calcium, phosphorus,iron, manganese, copper, zinc, magnesium, molybdenum, selenium and cobalt) in above samples were analyzed. [Result] Copper and magnesium concentrations in diseased lambs′ blood were significantly lower(P<0.05) than those in healthy lambs of the same breed, whereas molybdenum concentrations were significantly higher(P <0.05). The concentrations of the other mineral elements did not differ significantly(P>0.05). In the surroundings of the diseased lambs, the levels of magnesium and calcium in drinking water were higher. The levels of molybdenum, iron, manganese, and selenium in Reaumuria soongarica were higher than those described in the literature, whereas the levels of the other mineral elements were within normal limits. The levels of molybdenum, iron, manganese, selenium, magnesium, and cobalt in Kalidium foliatum were above those reported in the literature,whereas the contents of the other mineral elements were within normal limits. In Salsola passerina, Reaumuria soongarica and Kalidium foliatum, the ratios of copper to molybdenum were 15.96∶1, 0.23∶1, and 2.34∶1, respectively. The levels of copper, iron,manganese, selenium, and cobalt in the soil samples from the diseased lambs′ habitat were lower than those described in the literature,magnesium,calcium,and phosphorus levels were higher,and molybdenum and zinc levels were within normal limits.[Conclusion]Insufficient copper intake is the leading cause of sickness and mortality in Mongolian sheep lambs in Gobi grassland.Exceeded molybdenum as well as excessive intake of iron,manganese and some other mineral elements cause the malabsorption of copper by lambs,leading to secondary copper deficiency.
作者
李长青
王利
金海
薛树媛
郭天龙
王超
张海鹰
田丰
LI Chang-qing;WANG Li;Jinhai;XUE Shu-yuan;GUO Tian-long;WANG Chao;ZHANG Hai-ying;TIAN Feng(Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot010031,China)
出处
《畜牧与饲料科学》
2022年第2期46-50,共5页
Animal Husbandry and Feed Science
基金
内蒙古农牧业创新基金项目(2017CXJJM04)
内蒙古自然科学基金项目(2018MS03005)
国家现代肉羊产业技术体系(CARS-38)。
关键词
戈壁草原蒙古羊
羔羊
铜缺乏症
诊断
Mongolian sheep in Gobi grassland
lambs
copper deficiency
diagnosis
