本實(shí)驗(yàn)旨在研究干草的消化率,消化率及體外產(chǎn)氣量之間的關(guān)系,從而開(kāi)發(fā)價(jià)廉、方便的飼料原料。干草由苜蓿和羊草鮮草制得,不含有毒草籽,或引起瘤胃鼓脹物質(zhì)；上述兩種干草原料能夠提高營(yíng)養(yǎng)利用率和肌肉品質(zhì)；苜蓿和羊草的飼喂能夠產(chǎn)生較少的廢棄物,從而提高利用效率,減少對(duì)環(huán)境的污染。苜蓿和羊草的附加價(jià)值能夠幫助人們進(jìn)行更有效的動(dòng)物生產(chǎn)。 在肉用反芻動(dòng)物飼養(yǎng)中多有使用鹽霉素添加劑,本文旨在研究苜蓿干草和羊草干草為粗料的情況下,添加不同濃度鹽霉素對(duì)在體外發(fā)酵過(guò)程中的某些指標(biāo)如有機(jī)物體外消化率,pH,產(chǎn)氣率,中性洗滌纖維,酸性洗滌纖維及可揮發(fā)性脂肪酸(VFA)的影響。實(shí)驗(yàn)在苜蓿干草和羊草干草中分別加入0mg/L(對(duì)照組),50mg/L和100mg/L不同濃度鹽霉素,鹽霉素及各脂肪酸分別通過(guò)體外產(chǎn)氣法和氣相色譜法進(jìn)行檢測(cè)。結(jié)果表明：與對(duì)照組相比,不同濃度鹽霉素能夠減少氣體的產(chǎn)生,并提高pH。隨著苜蓿干草和羊草干草中鹽霉素的增加,體外有機(jī)消化率有降低的趨勢(shì)。另外,中性洗滌纖維和酸性洗滌纖維的含量在高劑量鹽霉素組(100mg/L)有所提高�？偪蓳]發(fā)性脂肪酸并未受到影響,但隨著鹽霉素的增加,丙酸含量提高,丁酸含量...

【文章頁(yè)數(shù)】：76 頁(yè)

【學(xué)位級(jí)別】：碩士

【文章目錄】：
摘要
ABSTRACT
Chapter 1 Introduction
Chapter 2 Review of literature
    1 Effect of alfalfa hay and Chinese wildrye hay with salinomycin on the digestibility of ruminants
    2 Effect of salinomycin on in vitro digestibility with different diets
    3 Effects of different type of feeds for the determination of gas, pH, volatile fatty acids, neutral detergent' fiber, acid detergent fiber and organic matter
    4 Effects of different type of feed additives with salinomycin on the determination of volatile fatty acids, gas, pH value, dry matter, neutral detergent fiber, and acid detergent fiber
    5 Effect of salinomycin, with other grasses on digestibility, and control of diseases in animals
Chapter 3 Effects of salinomycin sodium with alfalfa on rumen fermentation in vitro
    Abstract
    1 Introduction
    2 Materials Methods.
        2.1 Experimental design
        2.2 Preparation of Buffer
        2.3 Collection of Rumen Fluid
        2.4 In vitro digestibility
        2.5 Samples collection and analysis
        2.6 Chemical Analysis
        2.7 Statistical analysis
    3 Results and discussion
        3.1 In vitro organic matter digestibility (IVOMD)
        3.2 Gas production
        3.3 pH
        3.4 NDF & ADF
        3.5 Volatile fatty acid (VFA)
Chapter 4 Effects of Salinomycin sodium with Chinese wildrye on rumenfermentation in vitro
    ABSTRACT
    1 Introduction
    2 Materials and Methods
        2.1 Experimental Design
        2.2 Preparation of Buffer
        2.3 In vitro digestibility
        2.4 Samples collection and analysis
        2.5 Chemical Analysis
        2.6 Statistical analysis
    3 Results and discussion
        3.1 In vitro organic matter digestibility (IVOMD)
        3.2 Gas production
        3.3 pH
        3.4 Neutral detergent fiber and acid detergent fiber
        3.5 Volatile fatty acid (VFA)
SUMMARY AND CONCLUSION
RECOMMENDATIONS
REFFERENCES
APPENDIX1
APPENDIX2
ACKNOWLEDGEMENTS



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