日粮L-精氨酸添加水平对肉仔鸡生长性能、腹脂率、脂质代谢的影响

发布时间：2021-08-25 19:41

　　本试验旨在评估日粮中添加不同水平L-精氨酸（L-Arg）对21-42日龄肉鸡生长性能、血脂、腹脂率、肌内脂肪和脂质代谢相关基因表达的影响。试验一,从256只21日龄的AA肉鸡中选取192只,随机分为四个处理组,每个处理组8重复,每重复6只鸡,试验期21天。对照组饲喂含低能水平（ME=12.48MJ/kg）的基础日粮,处理组分别在基础日粮中添加0.25%、0.50%和1.00%的L-精氨酸。结果表明：与对照组相比,在低能日粮中添加L-精氨酸对生长性能、腹部脂肪含量、肌内脂肪百分比、血浆甘油三酯、总胆固醇、高密度脂蛋白胆固醇和甲状腺激素浓度无显著影响;而血浆低密度脂蛋白胆固醇显著降低,其中,添加0.25%L-精氨酸时降低程度最大。试验分为4个处理,每处理8重复,每重复6只,分别向同一基础日粮中添加0（对照组）,0.25%,0.50%和1.00%L-Arg。结果表明,饲粮中添加L-Arg对肉鸡平均日增重、日均采食量和饲料转化率无显著影响。饲粮中添加L-Arg不影响腹脂率、肌间脂肪百分率、血浆甘油三酯、总胆固醇、高密度脂蛋白胆固醇、甲状腺激素水平和肝脏甲状腺激素敏感性spotl4a mRNA的... 

【文章来源】：西北农林科技大学陕西省 211工程院校 985工程院校 教育部直属院校

【文章页数】：66 页

【学位级别】：博士

【文章目录】：
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



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