RESUMO Objetivou-se avaliar a utilização de óleo de copaíba ou sucupira na ração de frangos de corte, sobre o desempenho e saúde intestinal. Foram utilizados 600 pintos de corte machos, da linhagem Cobb500 com um dia de idade, distribuídos em delineamento inteiramente casualizado, com quatro tratamentos e seis repetições com 25 aves cada. Com o objetivo de aumentar o desafio, as aves foram criadas sobre cama reutilizada. Os tratamentos consistiram de: ração controle; ração com antibiótico melhorador de desempenho avilamicina; ração com 2.000 mg/kg de óleo de copaíba e ração com 500 mg/kg de óleo sucupira. Os dados foram submetidos à análise de variância e teste Tukey (5%). A adição de 500 mg/kg do óleo de sucupira resultou em queda do desempenho das aves no período de 21, 33 e 40 dias de idade, já a adição do óleo de copaíba proporcionou resultados de desempenho semelhantes ao antibiótico. A suplementação com óleo de copaíba ou sucupira não promoveu alterações no epitélio intestinal dos frangos avaliados. A adição do óleo de sucupira foi prejudicial ao desempenho das aves. O óleo de copaíba pode ser utilizado em dietas para frangos como melhorador de desempenho.

SUMMARY The aim of this study was to evaluate the effect of supplemental copaiba or sucupira oils on broiler performance and intestinal health. A total of 600 one-day old Cobb 500 male broilers were distributed in a completely randomized design with four treatments and six replicates with 25 broilers each. To increase the health challenge, the broilers were reared on reused litter. The treatments consisted of: control diet; diet with a performance enhancing antibiotic (avilamycin); diet with 2,000 mg/kg copaiba oil and a diet with 500 mg/kg sucupira oil. Data were submitted to analysis of variance and Tukey test (5%). The addition of sucupira oil at 500 mg/kg decreased broiler performance at 21, 33, and 40 days of age, whereas the addition of copaiba oil resulted in similar performance relative to the antibiotic. Dietary supplementation of copaiba or sucupira oils did not change the intestinal epithelium of broilers. The addition of sucupira oil negatively affected broiler performance. Copaiba oil can be used in broiler diets as a performance enhancer.

ABSTRACT Two experiments were conducted to evaluate combinations of different storage periods and temperature of hatching eggs of breeder quails in two stages of the production cycle (24 and 43 weeks) on hatchability, quail neonate quality, and Bursa of Fabricius characteristics. In each experiment, a total of 1.050 Japanese quail eggs were incubated in a randomized block design in a factorial arrangement of 2 × 5 × 2, with two breeder ages (24 and 43 weeks), five storage periods (one, three, six, nine, and twelve days), and two storage temperatures (28 and 14 °C), totaling 20 treatments with 52 eggs each. Quantitative data were subjected to ANOVA and means were compared by Tukey's test. Qualitative data were subjected to Friedman's test. Polynomial regression analysis was performed in relation to the storage period of the eggs. Hatchability of 43-week-old breeders worsened as the storage period increased at 28 °C, while at 14 °C, hatchability was not affected. Yolk-free body weight was influenced only by storage period; therefore, the group stored for 12 days had the lowest yolk-free body weight. Twelve days of storage reduced the absorption of yolk residue and physical quality score and also affected neonate quail immunity. Fertile eggs from Japanese quails that are destined for incubation should be stored at 14 °C to maintain physical and immunological quality of the progeny. Moreover, eggs from older breeders originate lower-quality quails when eggs are not stored in a refrigerated environment.