摘要
为分析拉萨河谷冬春季放牧与舍饲彭波半细毛羊采食牧草、血液及被毛中主要矿物质元素的含量,试验选用1.5岁左右彭波半细毛羊母羊60只,随机分为放牧组(GZ)和舍饲组(IF)进行试验。结果表明:试验所用牧草矿物质元素,除钼外其他元素含量均为绿麦草>冬季天然牧草。冬季天然牧草磷、镁、硫、铜、锰、锌和硒及绿麦草镁含量低于正常范围。(2)舍饲组血清钙(P=0.026)、硫(P=0.030)、铜(P=0.011)和钼(P=0.014)含量高于放牧组,镁(P=0.090)、铁(P=0.071)、锌(P=0.083)和碘(P=0.066)含量有增高的趋势;其被毛钙(P=0.003)、磷(P=0.006)、镁(P<0.001)、铁(P=0.022)、锰(P<0.001)和碘(P=0.012)含量均高于后者,铜含量有增高的趋势(P=0.068)。在血液和被毛中,放牧组血清铜、锰及被毛铜、锰和硒含量及舍饲组血锰及被毛锰、硒含量均低于推荐值。以上结果表明,拉萨河谷冬春季放牧彭波半细毛羊钙、铁、钼和碘充足,但磷、镁、硫、铜、锰、锌和硒缺乏或不足;舍饲(以谷物为主的精补料+绿麦草干草)能有效解决磷、镁、硫、铜、锌和硒的缺乏问题,但锰仍需补充。
The aim of this study was to assess the mineral concentrations in the supplied feed, blood and wool of Pengbo semi-fine wool sheep under grazing or indoor feeding conditions during winter-spring period in Lhasa River Valley. Sixty one year and six months old Pengbo semi-fine wool ewes were randomly assigned to two treatment groups-grazing (GZ) and indoor feeding (IF). The results showed that the mineral concentrations were significantly higher in Secale cereal hay than those in winter pasture except for Mo. The concentrations of P, Mg, S, Cu, Mn, Zn and Se in winter pasture as well as Mg in Secale cereal hay were below their normal values. Serum levels of Ca (P=0.026), S (P=0.030), Cu (P=0.011), and Mo (P=0.014) were higher in the IF group than in the GZ group, and there was a tendency of higher concentrations of Mg (P=0.090), Fe (P=0.071), and I (P=0.066). Wool levels of Ca (P=0.003), P (P=0.006), Mg (P<0.001), Fe (P=0.022), Mn (P<0.001), and I (P=0.012) were higher in the IF group than in the GZ group, and Cu tended to be increased (P=0.068) in the IF group. Serum levels of Cu and Mn as well as wool levels of Cu, Mn and Se in the GZ group were below the normal value;serum level of Mn and wool levels of Mn and Se in the IF group were below the normal value. It can be concluded that P, Mg, S, Cu, Mn, Zn and Se contents in winter pasture were inadequate or largely deficient for Pengbo semi-fine wool sheep, while their Ca, Fe, Mo and I concentrations were adequate. Indoor feeding (cereal-based concentrate and Secale cereal hay) could fulfil the requirements of P, Mg, S, Cu, Zn and Se for the local sheep;however, the supplementation of Mn was still needed in local area.
作者
张晓庆
金艳梅
武俊喜
田发益
ZHANG Xiao-qing;JIN Yan-mei;WU Jun-xi;TIAN Fa-yi(Institute of Grassland Research, Key of Laboratory of Grassland Ecology and Restoration, Ministry of Agriculture, CAAS, Hohhot 010010, China;Faculty of Marine Studies, Shandong University at Weihai, Weihai 264209, China;Institute of Geographic Science and Natural Resources Research, Beijing 100101, China;The Biology and Technique Center of Tibet Agriculture and Animal Husbandry College, Linzhi 860000, China)
出处
《中国草地学报》
CSCD
北大核心
2019年第3期124-129,共6页
Chinese Journal of Grassland
基金
国家自然科学基金项目(31402119)
西藏自治区重点研发计划项目
中央级公益性科研院所基本科研业务费专项(1610332018022)
关键词
西藏
彭波半细毛羊
矿物质元素
硒
锰
缺乏
Tibet
Pengbo semi-fine wool sheep
Mineral element
Selenium
Manganese
Deficiency
