艾蒿水提物对肉仔鸡生产性能和免疫功能的影响

发布时间：2018-03-04 22:27

本文选题：艾蒿水提物　切入点：肉仔鸡　出处：《内蒙古农业大学》2016年硕士论文　论文类型：学位论文

【摘要】：本论文研究了日粮中添加不同水平的艾蒿水提物对肉仔鸡生产性能和免疫功能的影响,旨在为艾蒿水提物在肉仔鸡日粮中的科学应用提供理论依据。试验选取了192只1日龄体重相近的健康AA肉仔鸡,随机分为4个处理,每个处理6个重复,每个重复8只鸡。各组试验日粮分别是在基础日粮中添加0、500、1000、2000 mg/kg的艾蒿水提物配制而成。试验期42d,分前后两期,各21d。试验结果如下：(1)试验条件下,与对照组相比,试验组添加量为500、1000、2000 mg/kg时日增重显著增加,增加量分别为8.5%、7.3%、7.7%。这表明适量添加艾蒿水提物能提高肉仔鸡生长性能,而添加量为500 mg/kg时效果最好。(2)艾蒿水提物会对肉仔鸡的营养物质代谢产生影响。试验后期,添加艾蒿水提物能够显著提高干物质和粗蛋白的表观消化率(P0.05),而添加量为2000 mg/kg时钙的代谢率较对照组显著增加。(3)艾蒿水提物能够显著提高肉仔鸡小肠食糜中消化酶活性,并促进小肠黏膜的发育。试验结果表明,饲料中添加艾蒿水提物对糜蛋白酶、胰蛋白酶、淀粉酶的活性都有很好的提高作用,总体来说以添加量为500 mg/kg时效果最好；试验前期,添加量为1000和2000 mg/kg时回肠绒毛高度显著高于对照组,添加水平为2000 mg/kg时十二指肠隐窝深度和添加水平为1000和2000 mg/kg时空肠隐窝深度显著小于对照组,综合来看,与对照组相比,当艾蒿水提物添加量为1000和2000 mg/kg时十二指肠和回肠的绒毛高度和隐窝深度比值显著增大。试验后期,添加量为1000与2000 mg/kg时空肠隐窝深度显著低于对照组,其它指标不显著。(4)艾蒿水提物能够增加肉仔鸡的瘦肉率,并提高肉品质。试验结果表明,添加量为2000 mg/kg时瘦肉率显著增加；添加量为500、1000 mg/kg时肉色L*显著降低；添加量为500 mg/kg时熟肉率显著降低。(5)艾蒿水提物能够显著增加法氏囊指数,并显著提高免疫球蛋白M (IgM)、免疫球蛋白G (IgG)含量(P0.05)。
[Abstract]:The effects of different levels of water extract of Artemisia argyi on the performance and immune function of broilers were studied in this paper. In order to provide theoretical basis for the scientific application of Artemisia annua water extract in broiler diet, 192 healthy AA broilers with similar body weight of 1 day were selected and randomly divided into 4 treatments with 6 replicates each. The experimental diets were prepared by adding water extract of Artemisia argyi (0 ~ 500 ~ 1000 mg/kg) to the basal diet for 42 days, divided into two periods, 21 days each. The results were as follows: 1: 1) in comparison with the control group. In the test group, the daily gain increased significantly at the dosage of 500 ~ 1000g / 2000 mg/kg, and the increment was 8.5g / kg and 7.3N / 7.7respectively, which indicated that the water extract of Artemisia argyi could improve the growth performance of broilers. The water extract of Artemisia annua had an effect on nutrient metabolism of broilers when the dosage was 500 mg/kg. The apparent digestibility of dry matter and crude protein was significantly increased by adding water extract of Artemisia argyi, and the metabolic rate of calcium was significantly higher than that of control group at 2 000 mg/kg.) the activity of digestive enzyme in small intestine chyme of broilers was significantly increased by water extract of Artemisia argyi. The results showed that the water extract of Artemisia argyi had a good effect on the activities of chymotrypsin, trypsin and amylase. The villi height of ileum was significantly higher at 1 000 and 2 000 mg/kg, the depth of duodenal crypt and space time crypt at 2 000 mg/kg and 1 000 mg/kg and 2 000 mg/kg were significantly lower than those in control group. The villus height and crypt depth ratio of duodenum and ileum increased significantly when the water extract of Artemisia argyi was added at 1 000 and 2 000 mg/kg, and the depth of intestinal crypt at 1 000 and 2 000 mg/kg was significantly lower than that in control group. Other indexes were not significant. (4) the water extract of Artemisia annua could increase the lean meat rate and improve the meat quality of broilers. The results showed that the lean meat rate increased significantly when the dosage was 2 000 mg/kg, and the meat color L* decreased significantly when the addition amount was 500 ~ 1 000 mg/kg. The water extract of Artemisia argyi significantly increased the bursa index of bursa of Fabricius, and also increased the content of immunoglobulin (IgM) and immunoglobulin G (IgG) in Artemisia wormwood at a dosage of 500 mg/kg.
【学位授予单位】：内蒙古农业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：S831.5

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