不同青贮方式对菠萝茎叶饲用品质的影响.pdf

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1、热带作物学报2014，35(5)：999—1004ChineseJournalofTropicalCrops不同青贮方式对菠萝茎叶饲用品质的影响李梦楚，一，王定发，周汉林，周璐丽1华中农业大学动物科技学院．湖北武汉4300702中国热带农业科学院热带作物品种资源研究所．海南儋州571737摘要分析添加尿素和废糖蜜对青贮菠萝茎叶营养成分的影响．并测定青贮后菠萝茎叶养分的瘤胃降解率。为提高菠萝茎叶的饲料化利用提供理论依据。试验以直接青贮菠萝茎叶为对照组，分别添加10g／kg尿素、20g废糖蜜、10kg尿素+20g／kg废糖蜜为试验组，青贮45d后进

2、行营养成分、养分的瘤胃降解分析。结果表明：与对照组相比，添加10尿素青贮菠萝茎叶可以显著降低单宁含量，提高粗蛋白(CP)、氨态氮(NH3一N)含量(p<0．05)；添加20g／kg废糖蜜，CP、单宁含量显著提高(p

3、解率。关键词菠萝茎叶；青贮；尿素；废糖蜜；瘤胃降解中图分类号$668．3．S816．5文献标识码AEfectsofDifferentSilageMethodsonFeedingValueofPineappleLeavesLIMengchu，WANGDingfa2，ZHOUHanlin，ZHOULuli1CollegeofAnimalScienceandTechnology,HuazhongAgriculturalUniversity,Wuhan，Hubei430070,China2TropicalCropsGeneticResourcesIns

4、titute，CATAS,Danzhou,Hainan57I737，ChinaAbstractTheexperimentwasconductedtoinvestigatetheeffectoftheadditionofureaandwastemolassesonthefeedingvalueofsilagepineappleleaves．Theresultswouldprovideatheoreticalbasisforimprovingtheutilizationofpineappleleaves．Thetreatmentincludedth

5、econtrolgroup(silagedirectly)，silagewith10g／kgurea，silagewith20g／kgwastemolasses．10g／kgureaand20g／kgwastemolassessimuhaneously．Thenutrientscontentandlumendegradationofnutrientswereanalyzedafter45dsilagetreatment．Theresultsshowedthatthesilagequalityincreasedcomparedwiththecon

6、trolgroup．Theadditionof10g／kgureadecreasedthetanninslevel，andimprovedCPandNH3一Ncontent(t9<0．05)．TheCPandtanninscontentsignificantlyimprovedby20g／kswastemolassestreatment(p<0．05)．ThecontentofCPandammoniacalnitrogenfurtherincreasedinthetreatedgroupwiththeadditionof10g／kgureaan

7、d20g／kgwastemolassescomparedwiththecontrol(P<0．05)，andtheaceticacidleveldecreased．ThedegradationrateofDM，CPandNDFat72hinthegroupswiththeadditionofureaandwastemolassesincreasedsignificantlycomparedwiththecontrolgroup(P<0．05)．Theresultssuggestedthattheadditionof10#ksurea+20g／k

8、gwastemolassescouldimprovethesilagequalityandrumendegradationofnutrientssig