?url_ver=Z39.88-2004&rft_id=10.51227%2FOJAFR.2023.38&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=S.R.A.&rft.au=Bugiwati%2C+S.R.A.&rft.aulast=Bugiwati&rft.date=27+July+2023&rft.issue=4&rft.volume=13&rft.atitle=MORPHOLOGY+CHARACTERISTICS+COMPARISON+OF+F1+AND+F2-+BACKCROSS+OF+LOCAL+AND+PEKIN+DUCKS+IN+INDONESIA&rft.pages=253-258&rft.issn=2228-7701&rft.title=Online+Journal+of+Animal+and+Feed+Research&rft.genre=article