›› 2019, Vol. 46 ›› Issue (6): 1677-1684.doi: 10.16431/j.cnki.1671-7236.2019.06.014

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Study of Zinc Deficiency in the Wumeng Semi-fine Wool Sheep

SONG Chunjie1, HUO Bin1, WU Ting1, SHEN Xiaoyun1,2,3   

  1. 1. College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China;
    3. State Engineering Technology Institute for Kast Desertification Control, Guizhou Normal University, Guiyang 550025, China;
    2. World Bank Poverty Alleviation Project Office in Guizhou, Southwest China, Guiyang 550004, China
  • Received:2018-12-03 Online:2019-06-20 Published:2019-06-19

Abstract:

This experiment was to study the etiology of zinc (Zn) deficiency in the Wumeng Semi-fine wool sheep.20 Zn-deficient Wumeng Semi-fine wool sheep were selected from Xingfa farm in Hezhang county as the experimental group,and 20 healthy Wumeng Semi-fine wool sheep were selected from Liangshuigou sheep farm in Weining county as the control group.Mineral concentrations were determined by inductively coupled plasma atomic emission spectroscopy in soil,forage and in tissue of Wumeng Semi-fine wool sheep.The blood parameters and biochemical indexes were determined on automatic hematology analyzer and biochemical kit.The results showed that Zn content in the soil and forage from the experimental pasture was extremely significantly lower than those of control area (P<0.01).Zn contents in the blood and liver in affected Wumeng Semi-fine wool sheep was extremely significantly lower than those of control group (P<0.01).There were no significant difference in other elements between two groups (P>0.05).The numbers of RBC,LY and NE in blood from affected Wumeng Semi-fine wool sheep were extremely significantly lower than those of control group (P<0.01).The levels of SOD,GSH-Px,CAT,LDH and AKP in serum from the affected Wumeng Semi-fine wool sheep were extremely significantly lower than those of control group (P<0.01).The content of MDA from affected animals were extremely significantly higher than that of control group (P<0.01),but there were no marked differences on the numbers of Hb,PCV,WBC,the content of BUN and the activities of AST,ALT and γ-GT between the two groups (P>0.05).In conclusion,the main symptoms of Wumeng Semi-fine wool sheep were "Zn deficiency" which mainly caused by low Zn content in soil and herbage.Adding proper amount of zinc sulfate in the diet could prevent and protection the disease of Wumeng Semi-fine wool sheep.

Key words: Wumeng Semi-fine wool sheep; soil and forage; physiological and biochemical indexes; parakeratosis of skin; Zn deficiency

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