日粮不同水平当归提取物对奶牛生产性能、血清生化指标及表观消化率的影响  

The effects of different levels of angelica extract in feed on the production performance,serum biochemical indicators,and apparent digestibility of cows

作　　者：肖敏 王顶天 徐峥嵘[1] 李勇生[1] 梁斌 XIAO Min;WANG Dingtian;XU Zhengrong;LI Yongsheng;LIANG Bin(Gansu Provincial Center for Animal Disease Control and Prevention,Lanzhou,Gansu Province 730046,China;Gansu Provincial Livestock Breeding and Improvement Management Station,Wuwei,Gansu Province 733000,China)

机构地区：[1]甘肃省动物疫病预防控制中心,甘肃兰州730046 [2]甘肃省家畜繁育改良管理站,甘肃武威733000

出　　处：《中国饲料》2024年第8期29-32,共4页China Feed

基　　金：甘肃省奶牛健康养殖与主要疫病防控技术集成应用(GNKJ-2023-12)。

摘　　要：为分析日粮中不同水平当归提取物(Angelica Extract,AE)对奶牛生产性能、血清生化指标及表观消化率的影响。试验以泌乳期奶牛为试验对象,分为4组,各组奶牛根据营养需要配制基础日粮,分别添加0 mg/kg(AE0组)、200 mg/kg(AE200组)、400 mg/kg(AE400组)、600 mg/kg(AE600组)的当归提取物,每组3个重复,每个重复7头,共计84头奶牛。预饲期7 d,正试期30 d。结果显示:(1)与AE0组相比,AE400组平均日产奶量显著提高9.08%(P<0.05),料奶比显著降低8.82%(P<0.05)。与AE0组相比,AE200组、AE400组、AE600组乳蛋白率显著提高(P<0.05),体细胞数显著降低(P<0.05)。(2)与AE0组相比,AE200、AE400、AE600组血清中总蛋白、白蛋白含量显著提高(P<0.05)。与AE0组相比,AE400、AE600组血清中低密度脂蛋白胆固醇含量显著降低(P<0.05)。(3)与AE0组相比,AE200、AE400、AE600组干物质、粗蛋白质表观消化率显著提高(P<0.05)。与AE0组相比,AE400组中性洗涤纤维表观消化率显著提高(P<0.05)。结论:当归提取物具有提高奶牛生产性能,改善血清生化指标及表观消化率的功效。在本试验条件下,当归提取物的适宜添加水平为400 mg/kg。To analyze the effects of different levels of Angelica Extract(AE)in feed on the production performance,serum biochemical indicators,and apparent digestibility of cows.84 lactating cows with similar gestational age and milk production were selected for the experiment.Randomly divide into 4 groups,each with 3 replicates,each with 7 heads.Each group of cows was fed with basic feed according to their nutritional needs,and Angelica extract was added at 0 mg/kg(AE0 group),200 mg/kg(AE200 group),400 mg/kg(AE400 group),and 600 mg/kg(AE600 group),respectively.The pre trial period was 7 days,and the main trial period was 30 days.The results showed that:(1)Compared with the AE0 group,the average daily milk production of the AE400 group increased by 9.08%(P<0.05),and the feed to milk ratio decreased by 8.82%(P<0.05).Compared with the AE0 group,the milk protein rate of the AE200,AE400,and AE600 groups was significantly increased(P<0.05),and the number of somatic cells was significantly reduced(P<0.05).(2)Compared with the AE0 group,the total protein and albumin content in the serum of the AE200,AE400,and AE600 groups were significantly increased(P<0.05).Compared with the AE0 group,the serum low-density lipoprotein cholesterol content in the AE400 and AE600 groups was significantly reduced(P<0.05).(3)Compared with the AE0 group,the apparent digestibility of dry matter and crude protein in the AE200,AE400,and AE600 groups was significantly increased(P<0.05).Compared with the AE0 group,the apparent digestibility of neutral detergent fibers in the AE400 group was significantly increased(P<0.05).Conclusion:Angelica extract has the effect of improving the production performance of cows,improving serum biochemical indicators and apparent digestibility.Under the conditions of this experiment,the appropriate level of addition for Angelica extract is 400 mg/kg.

关 键 词：当归提取物 奶牛 生产性能 血清生化指标 表观消化率 

分 类 号：S823[农业科学—畜牧学]