?url_ver=Z39.88-2004&rft_id=10.36380%2Fjwpr.2020.51&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=El-Kholy%2C+K.+H.&rft.aufirst=K.+H.&rft.aulast=El-Kholy&rft.issue=3&rft.volume=10&rft.issn=2322455X+(ISSN)&rft.pages=443-450&rft.date=25+September+2020&rft.title=Journal+of+World's+Poultry+Research&rft.atitle=Physical+Performance+of+Broiler+Chickens+Affected+by+Dietary+Biological+Additives&rft.genre=article