本試驗(yàn)旨在評估日糧中添加不同水平L-精氨酸（L-Arg）對21-42日齡肉雞生長性能、血脂、腹脂率、肌內(nèi)脂肪和脂質(zhì)代謝相關(guān)基因表達(dá)的影響。試驗(yàn)一,從256只21日齡的AA肉雞中選取192只,隨機(jī)分為四個(gè)處理組,每個(gè)處理組8重復(fù),每重復(fù)6只雞,試驗(yàn)期21天。對照組飼喂含低能水平（ME=12.48MJ/kg）的基礎(chǔ)日糧,處理組分別在基礎(chǔ)日糧中添加0.25%、0.50%和1.00%的L-精氨酸。結(jié)果表明：與對照組相比,在低能日糧中添加L-精氨酸對生長性能、腹部脂肪含量、肌內(nèi)脂肪百分比、血漿甘油三酯、總膽固醇、高密度脂蛋白膽固醇和甲狀腺激素濃度無顯著影響;而血漿低密度脂蛋白膽固醇顯著降低,其中,添加0.25%L-精氨酸時(shí)降低程度最大。試驗(yàn)分為4個(gè)處理,每處理8重復(fù),每重復(fù)6只,分別向同一基礎(chǔ)日糧中添加0（對照組）,0.25%,0.50%和1.00%L-Arg。結(jié)果表明,飼糧中添加L-Arg對肉雞平均日增重、日均采食量和飼料轉(zhuǎn)化率無顯著影響。飼糧中添加L-Arg不影響腹脂率、肌間脂肪百分率、血漿甘油三酯、總膽固醇、高密度脂蛋白膽固醇、甲狀腺激素水平和肝臟甲狀腺激素敏感性spotl4a mRNA的... 

【文章來源】：西北農(nóng)林科技大學(xué)陜西省 211工程院校 985工程院校 教育部直屬院校

【文章頁數(shù)】：66 頁

【學(xué)位級別】：博士

【文章目錄】：
摘要
ABSTRACT
ACKNOWLEDGEMENTS
LIST OF TABLES
LIST OF FIGURES
CHAPTER 1. REVIEW OF LITERATURE
    1.1 INTRODUCTION
    1.2 History of Arginine
    1.3 Arginine and poultry nutrition
        1.3.1 Arginine and immune response
        1.3.2 Arginine and stress
        1.3.3 Arginine and egg production
        1.3.4 Arginine and carcass yield
        1.3.5 Arginine and growth performance
        1.3.6 Arginine toxicity
CHAPTER 2. Effect of dietary L-arginine supplementation on growth performance, bloodthyroid hormone levels and thyroid hormone responsive spotl4a gene expression in broilerchickens
    2.1 INTRODUCTION
    2.2 MATERIALS AND METHODS
        2.2.1 Experimental birds, housing and management
        2.2.2 Experimental design
        2.2.3 Experimental diets
        2.2.4 Measurements
        2.2.5 Statistical analysis
    2.3 RESULTS AND DISCUSSION
CHAPTER 3. Dietary L-arginine supplementation reduces abdominal fat content bymodulating lipid metabolism in broiler chickens
    3.1 INTRODUCTION
    3.2 MATERIALS AND METHODS
        3.2.1 Experimental birds, housing and management
        3.2.2 Experimental design
        3.2.3 Experimental diets
        3.2.4 Measurements
        3.2.5 Statistical analysis
        3.2.6 RESULTS AND DISCUSSION
SUMMARY
REFERENCES



本文編號：3362732