?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Issa%2C+S&rft.aufirst=S&rft.aulast=Issa&rft.issn=0121-3784&rft.pages=1-6&rft.atitle=Use+of+sorghum+on+stepwise+substitution+of+maize+in+broiler+feeds+in+Niger&rft.volume=27&rft.issue=10&rft.title=Livestock+Research+for+Rural+Development&rft.date=2015&rft.genre=article