Evaluation of non-conventional agro-industrial by-products

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1、SmallRuminantResearch44(2002)25–35Evaluationofnon-conventionalagro-industrialby-productsassupplementaryfeedsforruminants:invitroandmetabolismstudywithsheepa,*bcbYosephMekasha,AzageTegegne,AlemuYami,N.N.UmunnaaAlemayaUniversity,P.O.Box138,DireDawa,EthiopiabInternationalLivestockResearchInstitute

2、(ILRI),P.O.Box5689,AddisAbaba,EthiopiacEthiopianAgriculturalResearchOrganization(EARO),P.O.Box32,DebreZeit,EthiopiaAccepted31August2001AbstractInvitroandinvivoevaluationofnon-conventionalfeedresourceswascarriedoutintheInternationalLivestockResearchInstitute(ILRI),DebreZeitStation,Ethiopia,using

3、sheep.Tennon-conventionalfeedtypescommonlyusedbyurbanandperi-urbanlivestockfarmerswereobtainedfromthefarmingsystemandevaluatedinvitrofollowingstandardprocedures.Followinginvitrostudies,fivenon-conventionalfeedtypeswereselectedforinvivostudiesbasedontheinvitroresult,availability,andwideusebyfarme

4、rs.Thirtyindigenousramsweighing22:60:97ðmeanSDÞkginitiallywerestratifiedintoweightgroupsandassignedrandomlytotreatments.TreatmentsincludedTelaatella(traditionalbreweryresidue),Katicalaatella(traditionalliquorresidue),lentil(Lensculinaris)hull,roughpea(Lathyrussativa)hull,andfieldpeas(Pisumsativ

5、um)hullbasedonthebasaldietofnativegrasshay(control).InvitrostudyindicatedthatTelaandK.atellahadhigherorganicmatter(97–98%),crudeprotein(CP)(21%),andgrossenergy(GE)(21–22MJ/kgDM)andlowerfiberfractions(neutraldetergentfiber,NDF¼4160%;aciddetergentfiber,ADF¼1121%).Pulsehulls(lentil,roughpeaandfieldp

6、eahulls)hadmediumtohighCP(8–16%),lowerGE(17–19.5MJ/kgDM),andhigherfiberfractions(NDF¼4971%;ADF¼4962%).Amongthepulsehullsconsidered,lentilhullhadthehighestCP(16%),andlowestNDF(49.4%)andADF(48.6%).PoultrylitterandorangepeelhadthehighestCP(30%)andGE(28MJ/kgDM),respectively.Resultsoftheinvivostudy

7、indicatedthatbothatellaandpulsehullsimprovedtotaldrymatter,organicmatter,nitrogen,energyandNDFintakes.Theimprovementwashigherforatellacomparedtopulsehullgroups.Basaldietintakewasreducedwhenpulsehullswerefed.T.atella,K.atellaandlen