China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (12): 3933-3943.doi: 10.16431/j.cnki.1671-7236.2020.12.016

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Effects of Concentrate Supplementation on Blood Biochemical Indexes in Tibetan Sheep after Grazing at High Altitude Area in Cold Season

WANG Cailian, WU Jianping, LIU Lishan, LANG Xia   

  1. Key laboratory for sheep, goat and cattle germplasm and straw feed in Gansu Province, Institute of Animal & Pasture Science and Green Agricultural, Gansu Academy of Agricultural Science, Lanzhou 730070, China
  • Received:2020-06-12 Online:2020-12-20 Published:2020-12-18

Abstract: To study the effects of concentrate supplementation on serum biochemical indexes,40 nine-month-old Oura-type Tibetan sheep (30.21 kg±1.42 kg) were randomly divided into 4 groups.Group A grazed naturally,group B,C and D supplemented with 0.10,0.20 and 0.30 kg mixed concentrate per sheep every day after grazing,respectively.The trial lasted 210 days.The results showed that the content of total serum protein (TP),albumin (ALB),globulin (GLB),calcium (Ca),Ca/IP(inorganic phosphorus) value,creatine kinase (CK),lactate dehydrogenase (LDH),aspartate transaminase (AST),alaine transaminase (ALT) and γ-glutamine transferase (GGT) of the sheep increased with the concentrate supplemented.The content of serum glucose (GLU),cholesterol (CHO) and triglyceride (TG),the activities of superoxide dismutase (SOD) and catalase (CAT),the concentrations of growth hormone (GH),insulin-like growth facior-1 (IGF-1),cholecystokinin (CCK),IgA,IgG and IgM increased with the increasing of the amount of concentrate supplementation.But the IgG concentration of group D decreased a little compared with group C (P>0.05).Supplementary feed significantly increased the activity of alkaline phosphatase (AMP),the concentration of urea nitrogen (BUN) and the value of BUN/CRE (P<0.05),and significantly decreased the concentrations of creatinine (CRE) and uric acid (UA) (P<0.05).The results showed that supplemented with proper amount of concentrate after returning to grazing in cold season could improve the energy and fat metabolic capacity,enhance the synthesis of liver protein,improve the immunity and antioxidant capacity of the body,and regulate the metabolism of calcium and phosphorus of Oura-type Tibetan sheep.

Key words: Oura-type Tibetan sheep; cold season; supplemental level of concentrate; blood biochemical index

CLC Number: