摘要
本试验旨在研究高精料饲粮中添加辣蓼对绵羊生长性能及血清生化、免疫、炎症和抗氧化指标的影响。选取40只体重为(23.26±0.33)kg的3月龄杜寒杂交公羔,随机分为4组,每组10只。基础饲粮精粗比为75∶25,辣蓼添加量分别为0(对照组)、5(L1组)、10(L2组)、15 g/d(L3组)。试验期75 d,其中预试期15 d,正试期60 d。结果显示:L3组的后期平均日增重和后期增重均显著高于其他3组(P<0.05)。与对照组相比,添加辣蓼显著降低血清中尿素氮和甘油三酯含量(P<0.05),显著提高血清中低密度脂蛋白胆固醇含量(P<0.05),L3组总胆固醇含量显著高于其他3组(P<0.05),L3组的高密度脂蛋白胆固醇含量显著高于对照组和L1组(P<0.05)。与对照组相比,添加辣蓼可以显著提高血清中总抗氧化能力、谷胱甘肽过氧化物酶、总超氧化物歧化酶的活性(P<0.05),显著降低血清丙二醛含量(P<0.05),L2和L3组的血清过氧化氢酶活性显著高于对照组(P<0.05)。与对照组相比,添加辣蓼可以显著提高血清中酸性磷酸酶活性及免疫球蛋白、干扰素-γ含量(P<0.05);显著降低血清中一氧化氮和脂多糖含量(P<0.05),L2和L3组血清中白细胞介素-1β、白细胞介素-6和肿瘤坏死因子-α含量显著低于对照组(P<0.05)。综上所述,高精料饲粮中添加辣蓼可以提高绵羊的抗氧化能力和免疫功能,降低血清中促炎因子的含量,缓解采食高精料带来的机体炎症,提高绵羊的平均日增重和总增重,对保持绵羊机体健康有积极影响。在本试验条件下,辣蓼不会对机体产生不良影响,15 g/d的添加量最优。
The purpose of the experiment was to study the effects of high-concentrate diet supplemented with Polygonum hydropiper L.on growth performance,serum biochemical,immune,inflammation and antioxidant indexes of sheep.Forty 3-month-old Duhan crossbred male lambs weighing(23.26±0.33)kg were randomly divided into 4 groups with 10 lambs in each group.The ratio of concentrate to roughage in the basal diet was 75∶25,and the addition levels of Polygonum hydropiper L.were 0(control group),5(L1 group),10(L2 group)and 15 g/d(L3 group).The experimental period was 75 days of which the pre-test period was 15 days and the formal period was 60 days.Results showed as follows:the average daily gain and weight gain in late stage of the L3 group were significantly higher than those of the other three groups(P<0.05);compared with the control group,the addition of Polygonum hydropiper L.significantly reduced the contents of urea nitrogen and triglyceride in serum(P<0.05),significantly increased serum low density lipoprotein cholesterin content(P<0.05),the serum total cholesterol content in the L3 group was significantly higher than that in the other three groups(P<0.05),the high density lipoprotein cholesterol content in the L3 group was significantly higher than that in the control group and L1 group(P<0.05);compared with the control group,the addition of Polygonum hydropiper L.could significantly increase the activities of total antioxidant capacity,glutathione peroxidase,and total superoxide dismutase in serum(P<0.05),significantly reduce serum malonaldehyde content(P<0.05),the catalase activity in L2 and L3 groups was significantly higher than that in the control group(P<0.05);compared with the control group,adding Polygonum hydropiper L.could significantly increase acid phosphatase activity and immunoglobulin,interferon-γcontents in serum(P<0.05),significantly reduce nitric oxide and lipopolysaccharide contents in serum(P<0.05),serum interleukin-1β,interleukin-6,and tumor necrosis factor-αcontents in the L2 and L3 groups were significantly lower than those in the control group(P<0.05).It is found that the addition of Polygonum.hydropiper L.to high-concentrate diet can improve the antioxidant capacity and immune function of sheep,reduce the contents of serum pro-inflammatory factors,alleviate the inflammation caused by eating high concentrate diets,increase the average daily gain and total weight gain of sheep,and have a positive effect on maintaining the health of sheep.Under the conditions of this experiment,Polygonum.hydropiper L.will not have a bad effect on the body,and the addition amount of 15 g/d is the best.
作者
于天力
何振莲
韩怡静
任靖宇
夏呈强
裴彩霞
YU Tianli;HE Zhenlian;HAN Yijing;REN Jingyu;XIA Chengqiang;PEI Caixia(College of Animal Science,Shanxi Agricultural University,Taigu 030801,China)
出处
《动物营养学报》
CAS
CSCD
北大核心
2024年第4期2551-2560,共10页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
山西省省筹资金资助回国留学人员科研项目(2020-058)
畜牧学“1331工程”重点学科建设功能畜产品专项(J201811301)。
关键词
高精料
辣蓼
绵羊
免疫
抗氧化
high-concentrate diet
Polygonum hydropiper L.
sheep
immune
antioxidant
