Fig. 2From: Progress towards reduced-crude protein diets for broiler chickens and sustainable chicken-meat productionQuadratic relationship (r = 0.935; P = 0.00009) between ratio of ammonia-N to [ammonia-N plus uric acid-N] in excreta and FCR from 7 to 21 days post-hatch where y = 1.331 + 0.022×ratio + 0.910×ratio2. Adapted from Hofmann et al. [42]Back to article page