摘要
Para estudar o efeito da substitui o do milho pelo sorgo, com ou sem a adi o do pigmento natural, p芍prica, na ra o de poedeiras comerciais, 160 poedeiras Hy-Line W36, (47 semanas de idade), distribu赤das ao acaso, em duas aves por gaiola de 25 cm, divididas em cinco tratamentos com quatro repeti es de oito aves cada, foram utilizadas. A ra o controle foi 角 base de milho e farelo de soja e as demais substitu赤ram o milho pelo sorgo, de baixo tanino, na propor o de 50 ou 100%. A p芍prica, quando adicionada, foi em 500 g t-1 e 1.000 g t-1 para os n赤veis de sorgo de 50 e 100%, respectivamente. A substitui o do milho por sorgo n o afetou o desempenho na postura, mas reduziu a pigmenta o da gema. A colora o da gema, com a adi o do pigmento natural, em ambas dosagens, foisuperior ao controle, por谷m a dosagem de 1.000 g t-1 reduziu a postura. This study aimed to investigate the effect of the substitution of the corn for sorghum, with or without supplementation of paprika, asnatural pigment, in the diets of laying hens. The experiment was conducted with 160 Hy-Line W36 layer hens (47 weeks of age), kept in cages of 25 cm, distributed in a completely randomized design, with eight birds and four replications. The control diet was on a cornand soybean meal base and the other diets had 50 or 100% of substitution of corn by sorghum, low tannin. The paprika, when supplemented, was added in 500 g t-1 or 1,000 g t-1. to the ration of low or high sorghum levels, respectively. The substitution of the cornby sorghum did not affect the performance of laying hens, but decreased the yolk pigmentation. When the natural pigment was added, in both dosages, the yolk pigmentation was higher than that obtained from the control diet, but the level of 1,000 g t-1. reduced theperformance of layers.