Factors that limit first service pregnancy rate in cows at char management of Bangladesh

摘要

ThisstudywasconductedfromFebruary2009toFebruary2010attheselectedcharareasofriverJamunaofKazipurUpazila(subdistrict)atSirajgonjdistrictofBangladeshtodeterminethefactorsthatlimitthepregnancyratetofirstartificialinsemination(PR/FAI)incows.Anumberof852cowswereselectedconsideringpotentialfactorsofbodyweight,breed,age,parity,season,breedofbullsemenandartificialinsemination(AI)technician.Among852cows,overallpregnancyratewas57.3%(n=488)andfirstAIpregnancyrate42.7%(n=364).Overall1.7AIwasrequiredforeachpregnancy.MultiplelogisticregressionanalysiswasdonetomeasuretheassociationbetweenfirstAIpregnancyrateandpotentialriskfactors.Asignificantly(p0.01)(OR=0.591,95%CI0.413,0.846)lowPR/FAI(34.9%)wasinL×HFcows.Thefirstparitycowswassignificantly(P0.01)considered(OR=0.573,95%CI0.404,0.813)asariskfactorforlow(37.3%)PR/FAI.Asignificantly(P0.05)(OR=1.73,95%CI1.113,2.706)higher(45.5%)PR/FAIwasinspring(March-April)comparedtosummer(43.1%)(May-July).AchanceofpregnancytofirstAIinspring(March-April)wascomparativelymore(1.7times)thansummer(May-July).Thelessskilled/experiencedAItechnicianhadsignificant(P0.05)(OR=0.662,95%CI0.466,0.940)poorperformance(38.6%)comparedtoskilledandwellexperiencedAItechnician,anditwasconsideredasoneoftheriskfactors(P0.05)forPR/FAI.ItissuggestedthattrainingondairyingwithcommunityveterinarycareimprovesthelivelihoodofpoorestpeoplelivingintheislandcharsinBangladesh.