Study on selenium of soil induced copper deficiency of Przewalski's gazelles
The experiment aimed to explore the main causes of copper deficiency in Przewalski's gazelles.The experiment was conducted in the upper reaches of the Buha River,a high-incidence area of copper deficiency,as the experimental pasture,and the Bird Island Protection Area as the control pasture.Ten copper-deficient Przewalski's gazelles(one-year-old males)from the experimental pasture were selected as the experimental group,and ten healthy Przewalski's gazelles(one-year-old males)from the control pasture were selected as the control group.The mineral content of soil,forage,blood,and liver was measured,and blood routine parameters,biochemical parameters,and theological parameters were analyzed.The results showed that the Se content in the forage and soil of the experimental pasture was extremely lower than that of the control pasture(P＜0.01),and the sulfur content in the forage was extremely higher than that of the control pasture(P＜0.01).The selenium and copper content in the blood and liver of the experimental pasture were extremely lower than that of the control pasture(P＜0.01),and the sulfur content was extremely higher than that of the control pasture(P＜0.01).Hb,HCT,MCV,and MCH were all extremely lower than those of the control pasture(P＜0.01).The activities of GSH-Px and SOD were extremely lower than those of the control pasture(P＜0.0l),and the level of MDA was extremely higher than that of the control pasture(P＜0.01).MS was significantly higher than that of the control pasture(P＜0.05),and PV was extremely lower than that of the control pasture(P＜0.01).RHS,LS,RLS,HBV,LBV,IR,EAI,and TK were all extremely higher than those of the control pasture(P＜O.01).In the treatment experiment,ten copper-deficient Przewalski's gazelles were orally administered copper sulfate(CuSO4),and the anemia symptoms were cured,and the copper levels in the body were significantly increased compared to before.The study indicates that low selenium soil leads to an increase in sulfur content in forage,and Przewalski's gazelles feeding on high sulfur forage lead to a reduction in copper absorption,thus resulting in secondary copper deficiency.
Przewalski's gazellesselenium nutritioncopper deprivationsulfur elementthe Qinghai lake basin
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