RESULTS
Growth Performance Variables
Corn 1. Dietary treatments had no effects (P > 0.05) on performance variables in the starter and finisher phases. In the grower phase, birds fed the XAP diet had higher feed intake (67.4 ± 2.25 g/d per bird; P = 0.050) than the NC diet (61.0 ± 2.25 g/d per bird). Birds receiving the X diet had higher FCR (1.69 ± 0.03; P = 0.039) compared with the NC-fed group (1.59 ± 0.03; data not shown).
Corn 2. Diets had no effect (P > 0.05) on performance of birds in the starter phase except for a higher feed intake (20.5 ± 0.46 g/d per bird; P = 0.040) in birds fed the XAP diet relative to the NC birds (19.1 ± 0.46 g/d per bird). There was also no effect (P > 0.05) of diets in the grower phase. In the finisher phase, birds fed with the XAP diet had higher weight gain (67.7 ± 1.44 g/d per bird; P = 0.036) compared with the NC diet (63.3 ± 1.44 g/d per bird). However, treatments
had no effect on feed intake and FCR relative to the NC diet (data not shown).
Corn 3. In the starter phase, birds fed the XG diet had higher feed intake (20.9 ± 0.52 g/d per bird; P = 0.024) compared with the NC diet (19.1 ± 0.52 g/d per bird). There was no effect of diets on BW gain and FCR. Diets had no effects (P > 0.05) on performance variables in the grower and finisher phases (data not shown).