杜仲叶与益生素对蛋鸡脂肪代谢影响的比较研究

发布时间：2018-04-15 13:52

  本文选题：杜仲叶 + 益生素　； 参考：《西北农林科技大学》2015年硕士论文

【摘要】：高度集约化、规模化的畜禽养殖,限制了动物的正常活动,容易导致动物脂肪代谢异常,随之产生动物脂肪代谢异常的代谢类疾病。如何通过营养途径生产低脂肪动物畜产品,改善动物脂肪代谢异常所导致的健康问题,是近年来业界关注的热点问题之一。本试验通过比较研究在蛋鸡日粮中添加杜仲叶粉、益生素对蛋鸡生产性能、蛋品质及脂肪代谢的影响效应,为杜仲叶粉在家禽生产中的应用提供依据。试验将540只23周龄海兰(褐)商品蛋鸡随机分为3个处理,每处理6个重复,每个重复30只蛋鸡。三个处理分别为基础日粮对照组(Ⅰ组)、0.5%益生素(Ⅱ组)和0.5%杜仲叶粉(Ⅲ组)。预饲期1周、试验期8周。测定蛋鸡生产性能和蛋品质指标、血清脂肪代谢相关生化指标—胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白(HDL-C)和低密度脂蛋白(LDL-C)、鸡蛋中蛋黄胆固醇和脂肪酸含量、蛋鸡肝脏载脂蛋白(APO-A1)基因mRNA的相对表达量、蛋鸡的腹脂率和肝脏器官指数。试验结果如下:1.日粮添加0.5%杜仲叶粉、0.5%益生素可显著提高产蛋鸡产蛋率(P0.05)、降低平均日采食量(P0.05)、降低料蛋比(P0.05),但益生素和杜仲叶粉二者之间的比较效应差异不显著(P0.05);对平均蛋重无显著影响(P0.05)。2.日粮添加0.5%杜仲叶粉、0.5%益生素对鸡蛋蛋壳强度、蛋壳厚度、蛋形指数、蛋白高度、哈氏单位、蛋黄色泽均无显著影响(P0.05)。3.日粮添加0.5%杜仲叶粉、0.5%益生素均能够显著著降低血清中TC、TG、LDL-C水平,提高HDL-C水平(P0.05)。且杜仲叶组的效果优于益生素组。4.日粮添加0.5%杜仲叶能够显著著降低蛋黄胆固醇浓度(P0.05),但对鸡蛋脂肪酸的含量无显著影响(P0.05);日粮添加0.5%益生素对鸡蛋胆固醇和脂肪酸无显著影响(P0.05)。5.日粮添加0.5%杜仲叶、0.5%益生素能显著提高蛋鸡肝脏载脂蛋白(APO-A1)基因mRNA表达量(P0.05),其中杜仲叶组效果优于益生素组。6.日粮添加0.5%杜仲叶、0.5%益生素,试验终期产蛋鸡腹脂率有所降低,肝脏指数有所上升,但与对照组差异不显著(P0.05)。结论1.日粮添加杜仲叶和益生素能显著提高蛋鸡生产性能,但对蛋品质无显著影响;2.日粮添加杜仲叶和益生素能显著调节蛋鸡血液脂肪代谢功能,且杜仲叶能显著著降低蛋黄胆固醇浓度,其调节脂肪代谢的效果优于益生素。杜仲叶和益生素这种效应可能与其能改善蛋鸡血清脂肪代谢指标和调控蛋鸡肝脏APO-A1基因的mRNA表达有关。
[Abstract]:Highly intensive and large-scale livestock farming restricts the normal activities of animals and easily leads to abnormal fat metabolism of animals, which leads to metabolic diseases of abnormal fat metabolism in animals.In recent years, how to produce low fat animal animal products and improve the health caused by abnormal fat metabolism is one of the hot issues in the industry.The effects of adding Eucommia leaf powder and probiotics on performance, egg quality and fat metabolism of laying hens were studied in order to provide evidence for the application of Eucommia ulmoides powder in poultry production.540 23 week-old Hailan (Brown) commercial layers were randomly divided into 3 treatments, 6 replicates per treatment and 30 layers per replica.The three treatments were basal diet control group (group 鈪，

本文编号：1754394