本文選題：杜仲葉 + 益生素��； 參考：《西北農林科技大學》2015年碩士論文

【摘要】：高度集約化、規(guī)模化的畜禽養(yǎng)殖,限制了動物的正�；顒�,容易導致動物脂肪代謝異常,隨之產生動物脂肪代謝異常的代謝類疾病。如何通過營養(yǎng)途徑生產低脂肪動物畜產品,改善動物脂肪代謝異常所導致的健康問題,是近年來業(yè)界關注的熱點問題之一。本試驗通過比較研究在蛋雞日糧中添加杜仲葉粉、益生素對蛋雞生產性能、蛋品質及脂肪代謝的影響效應,為杜仲葉粉在家禽生產中的應用提供依據(jù)。試驗將540只23周齡海蘭(褐)商品蛋雞隨機分為3個處理,每處理6個重復,每個重復30只蛋雞。三個處理分別為基礎日糧對照組(Ⅰ組)、0.5%益生素(Ⅱ組)和0.5%杜仲葉粉(Ⅲ組)。預飼期1周、試驗期8周。測定蛋雞生產性能和蛋品質指標、血清脂肪代謝相關生化指標—膽固醇(TC)、甘油三酯(TG)、高密度脂蛋白(HDL-C)和低密度脂蛋白(LDL-C)、雞蛋中蛋黃膽固醇和脂肪酸含量、蛋雞肝臟載脂蛋白(APO-A1)基因mRNA的相對表達量、蛋雞的腹脂率和肝臟器官指數(shù)。試驗結果如下:1.日糧添加0.5%杜仲葉粉、0.5%益生素可顯著提高產蛋雞產蛋率(P0.05)、降低平均日采食量(P0.05)、降低料蛋比(P0.05),但益生素和杜仲葉粉二者之間的比較效應差異不顯著(P0.05);對平均蛋重無顯著影響(P0.05)。2.日糧添加0.5%杜仲葉粉、0.5%益生素對雞蛋蛋殼強度、蛋殼厚度、蛋形指數(shù)、蛋白高度、哈氏單位、蛋黃色澤均無顯著影響(P0.05)。3.日糧添加0.5%杜仲葉粉、0.5%益生素均能夠顯著著降低血清中TC、TG、LDL-C水平,提高HDL-C水平(P0.05)。且杜仲葉組的效果優(yōu)于益生素組。4.日糧添加0.5%杜仲葉能夠顯著著降低蛋黃膽固醇濃度(P0.05),但對雞蛋脂肪酸的含量無顯著影響(P0.05);日糧添加0.5%益生素對雞蛋膽固醇和脂肪酸無顯著影響(P0.05)。5.日糧添加0.5%杜仲葉、0.5%益生素能顯著提高蛋雞肝臟載脂蛋白(APO-A1)基因mRNA表達量(P0.05),其中杜仲葉組效果優(yōu)于益生素組。6.日糧添加0.5%杜仲葉、0.5%益生素,試驗終期產蛋雞腹脂率有所降低,肝臟指數(shù)有所上升,但與對照組差異不顯著(P0.05)。結論1.日糧添加杜仲葉和益生素能顯著提高蛋雞生產性能,但對蛋品質無顯著影響;2.日糧添加杜仲葉和益生素能顯著調節(jié)蛋雞血液脂肪代謝功能,且杜仲葉能顯著著降低蛋黃膽固醇濃度,其調節(jié)脂肪代謝的效果優(yōu)于益生素。杜仲葉和益生素這種效應可能與其能改善蛋雞血清脂肪代謝指標和調控蛋雞肝臟APO-A1基因的mRNA表達有關。
[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，

本文編號：1754394