State University of Southwest Bahia, Itapetinga, Bahia, 45700-000, Brazil.
Federal University of Bahia, Salvador, Bahia, 40170-110, Brazil.
Trop Anim Health Prod. 2020 Nov 25;53(1):45. doi: 10.1007/s11250-020-02460-x.
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.
油棕仁饼是一种可行的牛饲料替代品，可以降低生产成本。本研究旨在评估日粮干物质（DM）中不同浓度油棕仁饼对育肥牛采食量、养分消化率和生产性能的影响。40 头非去势杂交公牛，平均年龄 24±2 个月，平均体重 331.12±36.20kg，分为 4 个处理组（对照组 0%，日粮中不含棕仁饼；8%、16%和 24%的棕仁饼）。在日粮 DM 中棕榈仁饼浓度（P<0.05）的函数下进行方差和回归分析。干物质采食量随日粮 DM 中棕榈仁饼浓度的增加而线性下降（P<0.05）。在动物日粮中添加棕榈仁饼降低了干物质消化率（P<0.05）。棕榈仁饼对平均日增重或饲料转化率没有影响（P>0.05）。在育肥期，油棕仁饼可按日粮 DM 浓度高达 24%的水平添加到杂交公牛的日粮中，因为其对生产性能没有影响。
