Palm kernel cake is a viable alternative for use in cattle feed to reduce production costs. The aim of this study was to evaluate the effects of concentrations in diet dry matter (DM) of palm kernel cake on intake and digestibility of nutrients and performance of cattle finished in a feedlot system. Forty non-castrated crossbred cattle, with an average age of 24 ± 2 months and an average weight of 331.12 ± 36.20 kg, were distributed among four treatments (control 0%, without heart of palm kernel cake in the diet; 8%, 16%, and 24% of palm kernel cake in diet DM). Variance and regression analysis were performed in function of the palm kernel cake concentrations in diet DM (P < 0.05). The dry matter intake decreased linearly (P < 0.05) as the concentrations in diet DM of palm kernel cake in the diet increased. The inclusion of palm kernel cake in the animals’ diet decreased (P < 0.05) on dry matter digestibility. No effects (P > 0.05) of palm kernel cake on average daily gain or feed conversion were observed. The palm kernel cake can be included in the diet of crossbred bulls finished in confinement at concentrations in diet DM of up to 24%, as it has not influenced performance.

棕榈仁饼是用于牛饲料以降低生产成本的可行替代品。这项研究的目的是评估棕榈仁饼的日粮干物质（DM）浓度对养育场系统中牛的营养摄入和养分消化率以及牛性能的影响。40头平均年龄为24±2个月，平均体重为331.12±36.20 kg的未-割的杂种牛被分配到四个处理中（对照组为0％，日粮中没有棕榈仁饼； 8％，16饮食DM中的％和24％的棕榈仁蛋糕）。对日粮DM中棕榈仁饼浓度的函数进行方差和回归分析（P  <0.05）。干物质摄入量线性下降（P <0.05），因为日粮中棕榈仁饼的日粮DM浓度增加。动物饮食中棕榈仁饼的含量降低了 干物质消化率（P <0.05）。没有观察 到棕榈仁饼对平均日增重或饲料转化率的影响（P > 0.05）。棕榈仁饼可以以不超过24％的日粮DM浓度包含在封闭的杂种公牛日粮中，因为它不影响生产性能。