Effect of supplementation with Kapok (Ceiba pentandra) tree foliage and Ivermectin injection on growth rate and parasite eggs in faeces of grazing goats in farmer households

摘要

Theon-farmtrialwasconductedduringan8-monthperiodfromFebruarytoSeptember2004,inLveaEmDistrict,Kandalprovince.FebruarythroughMaywastheendofthedryseason,therainsbeginninginJuneandcontinuingthroughSeptemberwithseverefloodinginthelasttwomonths.Twelvefarmersparticipatedinthetrial.Theywereallocatedto4treatmentsaccordingtoa2*2factorialarrangementwiththreereplications.Thetreatmentswere:G,grazinginthenaturalpastureonly;GI,grazingandivermectininjection;GS,grazingandsupplementationwithkapokfoliage(Ceibapentandra)wshenconfinedintheevening;andGSI,grazing,supplementationwithkapokfoliageandivermectininjection).Eachfarmerwasgiven2malegoats(localbreed).Growthratesweretwiceashighinthedryseason(rangeof98to112g/daythaninthewetseason(24to50g/day),whenmuchofthenaturalgrazingareawasflooded.GrowthrateswereincreasedbysupplementationinthewetseasonbutnotinthedryseasonandwerenotaffectedbyIvermectintreatmentineitherseason.Nematodeeggcountsinfaeceswereinthelowtomediumcategory(200to800EPG).TheywerelessingoatstreatedwithIvermectincomparedwithuntreatedcontrols,butwerenotaffectedbysupplementation.Supplementationwithkapokfoliageappearstobeaviableoptiontoimprovethenutritionalstatusofgoatsduringperiodsoftheyearwhengrazingisrestricted.