冷季牧归补饲精料对高海拔地区藏系绵羊血液生化指标的影响

doi:10.16431/j.cnki.1671-7236.2020.12.016

摘要/Abstract

摘要： 选取9月龄欧拉型藏系绵羊羯羊（30.21 kg±1.42 kg）40只，随机分为4组，A组冷季放牧，B、C和D组冷季牧归每天每只分别补饲0.10、0.20和0.30 kg混合精料，试验期210 d，研究冷季牧归补饲精料对其血清生化指标的影响。结果表明，补饲精料提高了欧拉型藏系绵羊血清总蛋白（TP）、白蛋白（ALB）、球蛋白（GLB）、钙（Ca）的含量，钙/无机磷（Ca/IP）比值及肌酸激酶（CK）、乳酸脱氢酶（LDH）、谷草转氨酶（AST）、谷丙转氨酶（ALT）和γ-谷氨酰胺基转移酶（GGT）活性；随着精料补饲量增大，绵羊血清葡萄糖（GLU）、胆固醇（CHO）和甘油三酯（TG）含量，超氧化物歧化酶（SOD）和过氧化氢酶（CAT）活性，生长激素（GH）、胰岛素样生长因子-1（IGF-1）、缩胆囊素（CCK）、胃泌素及免疫球蛋白A（IgA）、免疫球蛋白G（IgG）及免疫球蛋白M（IgM）的浓度增大，但补饲0.30 kg组试验羊IgG浓度较C组略有下降（P>0.05）；与A组相比，补饲精料显著提高了试验羊碱性磷酸酶（AMP）活性、尿素氮（BUN）浓度和BUN/CRE的值，显著降低肌酐（CRE）和尿酸（UA）浓度（P<0.05）。综合上述结果，冷季归牧后补饲适量精料可改善欧拉型藏系绵羊能量和脂肪的代谢能力，增强肝脏蛋白合成，提高机体免疫力和抗氧化力，调节钙磷代谢。

关键词: 欧拉型藏系绵羊; 冷季; 精料补饲量; 血液生化指标

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

中图分类号:

S826

王彩莲, 吴建平, 刘立山, 郎侠. 冷季牧归补饲精料对高海拔地区藏系绵羊血液生化指标的影响[J]. 中国畜牧兽医, 2020, 47(12): 3933-3943.

WANG Cailian, WU Jianping, LIU Lishan, LANG Xia. Effects of Concentrate Supplementation on Blood Biochemical Indexes in Tibetan Sheep after Grazing at High Altitude Area in Cold Season[J]. China Animal Husbandry and Veterinary Medicine, 2020, 47(12): 3933-3943.

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