Olaquindox as performance-promoting feed additive for growing pigs

Abstract Olaquindox (trade name: Bay-o-nox, Bayer Co.) is a quinoxalin derivative (C 12 H 13 N 3 O 4 ). Its efficacy was tested with particular reference to diets with and without a copper supplement. Olaquindox was included in the diet of pigs up to 54 kg liveweight, but performance was monitored between 18 and 87 kg. The daily gain and feed: gain ratio were significantly improved by supplementing the diet with Olaquindox. The response to copper was not significant. Carcass quality was not affected.