發(fā)布時(shí)間：2021-02-19 03:59

　　玉米是一種重要的糧食作物,也是畜禽飼料中主要的大宗原料。自從2017年以來(lái),我國(guó)面臨著玉米去庫(kù)存的問(wèn)題。大量的陳化玉米進(jìn)入到畜禽配合飼料,但陳化玉米對(duì)畜禽生產(chǎn)性能的影響規(guī)律及其可能機(jī)理目前還不清楚。因此,本論文通過(guò)4個(gè)試驗(yàn),系統(tǒng)研究了陳化玉米與油脂種類、油脂水平以及油脂品質(zhì)及其互作對(duì)肉鴨生產(chǎn)性能、屠宰性能、產(chǎn)品品質(zhì)、機(jī)體抗氧化能力及腸道生理的影響,為陳化玉米在肉鴨飼糧中的合理應(yīng)用提供技術(shù)支撐。試驗(yàn)1陳化玉米與大豆油對(duì)肉鴨生產(chǎn)性能、肉品質(zhì)及機(jī)體抗氧化能力的影響本試驗(yàn)旨在研究在不同水平陳化玉米飼糧中添加或不添加大豆油對(duì)肉鴨生產(chǎn)性能、肉品質(zhì)及機(jī)體抗氧化能力的影響。選擇768只1日齡櫻桃谷肉鴨隨機(jī)分為6個(gè)處理,每個(gè)處理8個(gè)重復(fù),每個(gè)重復(fù)16只鴨。試驗(yàn)采用2×3設(shè)計(jì),2是指不添加或添加3%大豆油,3是指陳化玉米按0,50%和100%替代正常玉米。試驗(yàn)期為35d,分為1-14d和15-35d兩個(gè)階段。結(jié)果表明,陳化玉米和大豆油對(duì)肉鴨試驗(yàn)期間的體重和體增重?zé)o影響（P>0.05）,但陳化玉米100%替代正常玉米顯著降低（P<0.05）了肉鴨15-35d采食量,添加3%大豆油增加了（P<... 

【文章來(lái)源】：四川農(nóng)業(yè)大學(xué)四川省 211工程院校

【文章頁(yè)數(shù)】：147 頁(yè)

【學(xué)位級(jí)別】：博士

【文章目錄】：
中文摘要
ABSTRACT
ABBREVIATIONS
CHAPTER Ⅰ
    1.INTRODUCTION
    2.LITERATURE REVIEW
        2.1 China's corn status
        2.2 Nutritional changes during corn storage
        2.3 Standard of aging corn
        2.4 Effect of aging corn on animal
        2.5.Soybean oil（SBO）and Rice bran oil（RBO）
    3.PROBLEMS AND RESEARCH QUESTIONS
    4.OBJECTIVES AND RESEARCH CONTENTS
    5.TECHNICAL ROUTE OF RESEARCH
CHAPTER Ⅱ
    1.Introduction
    2.MATERIALS AND METHODS
        2.1 Physical and chemical properties of aging corn and normal corn
        2.2 Experimental designs,birds’management and diet
        2.3 Sampling collection
        2.4 Measurements
        2.5 Statistical analysis
    3.RESULTS
        3.1 Effect of oil supplementation on growth performance in meat ducks fed diets containing various levels of aging corn
        3.2 Effect of oil supplementation on carcass traits in meat ducks fed diets containing various levels of aging corn
        3.3 Effect of oil supplementation on relative organ weight in meat ducks fed diets containing various levels of aging corn
        3.4 Effect of oil supplementation on Intestinal pH in meat ducks fed diets containing various levels of aging corn
        3.5 Effect of oil supplementation on Meat quality in meat ducks fed diets containing various levels of aging corn
        3.6 Effect of oil supplementation on antioxidant status in meat ducks fed diets containing various levels of aging corn
    4.DISCUSSION
    5.CONCLUSIONS
CHAPTER Ⅲ
    1.Introduction
    2.Materials and Methods
        2.1 Physical and chemical properties of aging corn,feed and fresh rice bran oil
        2.2 Experimental designs,birds’management,and diet
        2.3 Sampling collection
        2.4 Measurements
        2.5 Statistical analysis
    3.RESULTS
        3.1 Effect of FRBO supplementation on growth performance of meat ducks
        3.2 Effect of FRBO supplementation on slaughter performance
        3.3 Effect of the FRBO supplementation on relative organ weight of meat ducks
        3.4 Effect of the FRBO supplementation on intestinal length and pH
        3.5 Effect of FRBO supplementation on meat quality
        3.6 Effects of FRBO levels on serum lipid metabolism of duck
        3.7 Effects of FRBO levels on antioxidative status in ducks
        3.8 Effects of FRBO levels on ileum histomorphology in ducks fed with aging corn diet
        3.9 Effects of FRBO levels on short chain fatty acid in caecal digesta
        3.10 Effect of FRBO on DNA sequence coverage and microbial community structure in caecal microbiota
        3.11 Nutrient utilization
    4.Discussion
    5.Conclusion
CHAPTER Ⅳ
    1.Introduction
    2.Material and methods
        2.1 Physical and chemical properties of aging corn,feed and oxidative rice bran oil
        2.2 Experimental designs birds’management and diet
        2.3.Sampling collection
        2.4 Measurement
        2.5 Statistical analysis
    3.Results
        3.1 Effect of aging corn and ORBO on ducks growth Performance
        3.2 Effect of aging corn and ORBO on ducks carcass traits
        3.3 Effect of aging corn and ORBO on ducks relative organ weight
        3.4 Effect of aging corn and ORBO on ducks intestinal length,realtive intestinal length and pH
        3.5 Effect of aging corn and ORBO on ducks Meat quality
        3.6 Effect of aging corn and ORBO on serum lipid metabolism
        3.7 Effect of aging corn and ORBO on antioxidant status
        3.8 Effect of aging corn and ORBO on ileum morphology
        3.9 Effect of aging corn and ORBO on SCFA in caecal digesta
        3.10 Effect of aging corn and ORBO on DNA sequence coverage and microbial community structure in caecal digesta
        3.11 Nutrient utilization
    4.DISCUSSION
    5.CONCLUSION
CHAPTER Ⅴ
    1.Introduction
    2.Material and Methods
    3.Results
        3.1 Effect of FRBO and ORBO on growth performance in meat ducks
        3.2 Effect of FRB Oand ORBO on slaughter performance in meat ducks（Carcass Characteristics）
        3.3 Effect of FRBO and ORBO on relative organ weight in meat ducks
        3.4 Effect of FRBO and ORBO on intestinal length（cm）and pH in meat ducks at14 d
        3.5 Effect of FRBO and ORBO on meat quality in meat ducks
        3.6 Effect of FRBO and ORBO on serum lipid metabolism of duck at14 and35 days
        3.7 Effect of FRBO and ORBO on antioxidant status
        3.8 Effect of FRBO and ORBO on ileum histomorphology
        3.9 Effect of FRBO and ORBO on short chain fatty acid in caecal digesta of duck
        3.10 Effect of FRBO and ORBO on DNA sequence coverage and microbial community structure in cecal digesta
        3.11 Nutrient utilization
    4.DISCUSSION
    5.CONCLUSION
CONCLUSIONS AND FUTURE APPLICATIONS
REFERENCES
ACKNOWLEDGEMENTS
DEDICATION
ABOUT AUTHOR
LIST OF PUBLICATION



本文編號(hào)：3040567