| 无氮饲粮中铬添加水平对大鼠器官指数、肠道黏膜形态及血清指标的影响 |
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| 引用本文： | 郑灿财,黄艳玲.无氮饲粮中铬添加水平对大鼠器官指数、肠道黏膜形态及血清指标的影响[J].动物营养学报,2016(1):157-162. |
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| 作者姓名： | 郑灿财 黄艳玲 |
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| 作者单位： | 西南民族大学生命科学与技术学院,成都,610041 |
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| 基金项目： | 四川省国际合作计划项目，西南民族大学研究生创新型科研项目 |
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| 摘 要： | 本试验旨在研究无氮饲粮中添加不同水平丙酸铬(Cr Pro)对Sprague Dawley(SD)大鼠器官指数、肠道黏膜形态及血清指标的影响。试验选用36只体重均一的断奶雌性SD大鼠,分为3个处理,每个处理6个重复,每个重复2只鼠。各处理分别饲喂无氮基础饲粮(对照组,含铬0.08 mg/kg)及在基础饲粮上分别添加0.2和1.0 mg/kg Cr(以Cr Pro形式)的试验饲粮,试验期21 d。结果显示:1)饲粮添加0.2 mg/kg的Cr显著提高了大鼠脾脏指数(P0.05)。2)饲粮添加1.0 mg/kg的Cr显著提高了大鼠空肠绒毛高度与隐窝深度的比值(P0.05)。3)与对照组相比,饲粮添加1.0 mg/kg的Cr显著提高了血清白蛋白和尿酸含量(P0.05),饲粮添加0.2 mg/kg Cr显著提高了血清尿酸含量(P0.05)。由此可见,无氮饲粮中补充适量铬对改善大鼠机体免疫器官指数、肠黏膜形态及血清蛋白质代谢有一定的作用。
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| 关 键 词： | 无氮饲粮 丙酸铬 器官指数 肠道黏膜 血清指标 |
Effects of Chromium Supplemented Level in Nitrogen-Free Diets on Organ Indexes,Intestinal Mucosa Morphology and Serum Parameters of Rats |
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| Abstract: | This experiment was conducted to investigate the effects of different chromium propionate ( CrPro) level in nitrogen-free diets ( NFD) on organ indexes, intestinal mucosa morphology and serum parameters of rats.According to body weight, a total of 36 weaned Sprague Dawley ( SD) rats were allotted to 3 treatments with 6 replicates per treatment and 2 rats per replicate.Rats were fed a basal NFD ( control group) containing 0.08 mg/kg chromium ( Cr) , meanwhile, the basal diets supplemented with 0.2 or 1.0 mg/kg Cr from Cr for 21 days.The results showed that: 1) dietary supplemented with 0.2 mg/kg Cr significantly improved spleen index ( P<0.05) .2) Dietary supplemented with 1.0 mg/kg Cr significantly increased the ratio of villous height to crypt depth ( P<0.05) .3) Compared with the control group, dietary supplemented with 1.0 mg/kg Cr sig-nificantly improved serum albumin and uric acid contents ( P<0.05) , dietary supplemented with 0.2 mg/kg Cr significantly improved serum uric acid content ( P<0.05) .It is concluded that under NFD condition, the proper Cr supplementation has some effects on improving immune organs indexes, intestinal mucosa morphology and serum protein metabolism. |
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| Keywords: | nitrogen-free diets CrPro organ indexes intestinal mucosa serum parameters |
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