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1、PotentialforgreateruseofforagelegumesinUKgrasslandsystemsforimprovedbiodiversity,soilquality,andlivestocknutritionandhealth-for-TheDepartmentfortheEnvironment,FoodandRuralAffairs-by-RosemaryP.CollinsandMichaelFothergillInstituteofBiological,EnvironmentalandRuralSciences,AberystwythUniversity,U

2、K107ContentsHeadingPageSummary………………………………………………………………….3Listofabbreviations…………………………………………………….4Introduction……………………………………………………………….5Chapter1.BiodiversityIntroduction……………………………………………10(i)Plantdiversity…………………………………………11(ii)Invertebratesandbirds………………………………..20(iii)Soilmicrobialdiversity………

3、……………………….41References…………………………………………….43Chapter2.SoilQualityIntroduction…………………………………………..52(i)Nutrientcontent………………………………………53(ii)Soilstructure………………………………………….59(iii)Soilorganicmatter……………………………………64(iv)Microbialcommunities………………………………..66(v)Soilfauna……………………………………………...68References…………………

4、…………………………..69Chapter3.LivestockNutritionandHealthIntroduction…………………………………………..75(i)Productionoftraceablehomegrownprotein…………76(ii)Nutrition,utilisationandyield………………………..79(iii)Proteinprotectionbyphenoliccompounds…………..87(iv)Effectsofsecondarymetabolites………………...……89(v)Phytoestrogens……………………

5、…………………..90(vi)Effectonparasiticdiseases……………………………91(vii)Bloat…………………………………………………..92References……………………………………………..94Chapter4.ConclusionsandRecommendations…………………...101References……………………………………………..106107SUMMARYGrasslandfarmingintheUKisexperiencingaperiodofgreatchangeduetoanarrayofeconomic,soci

6、alandenvironmentalpressures.Thesepressures,togetherwiththecontinuedstrengthoftheorganicsector,plusanincreasingawarenessoftheflexibilityoflegumesforuseinintensivesystemshavedrivencurrentinterestinsustainablegrasslandagriculturebasedonswardscontainingforagelegumes.Maintenanceorimprovementofgrass

7、landbiodiversityandsoilquality,combinedwithreductionsinemissionsfromlivestockproductionandimprovedanimalhealtharepotentialbenefitsofincreaseduseoflegumesinUKgrasslandsystems.Thisstudyevaluatestheevidenceforthesebenefitsandsuggestswaysin