摘要
The experiment was carried out to evaluate the performance of broilers in 1-7 and 8-21 days of age, using metabolizable energy values of corn, soybean meal and soybean oil previously determined for each phase in another metabolism trial. Two trails were conducted, divided into phases according to ages: pre-starter (1-7 days) and starter (8-21 days). At each trial were used 924 broiler chicken randomly distributed into 42 experimental units in a completely randomized design with six treatments and seven replications. Treatments consisted of five diets using the values of apparent metabolizable energy corrected for nitrogen balance of corn, soybean meal and soybean oil determined in different metabolism trials, and one diet with the metabolizable energy values of these same ingredients, published on the literature. At the end of each stage, the animals and feed leftover were weighted to determine feed intake, weight gain and feed conversion ratio. Diets with higher soybean oil inclusion, showed superior performance at different stages. At pre-starter only feed conversion ratio was significant (P<0.05). In the initial phase, there was a significant difference (P<0.05) for feed conversion ratio, daily and average weight gain
摘要译文
进行实验以评价在1-7肉鸡和年龄8-21天的性能，使用玉米的代谢能值，豆粕和豆油先前确定为在另一个代谢trialTwo步道每一个阶段进行的，分为按年龄阶段：预起动器（1-7天），起动器（8-21天）在每次试验中，使用924肉鸡随机分成42试验单位在完全随机设计具有6个处理和七个重复治疗包括使用在不同的代谢试验所确定的玉米，豆粕和豆油的氮平衡校正的表观代谢能值5的饮食，和一种饮食与这些相同成分的代谢能值，对literatureAt公布每个阶段的最后，动物和饲料剩进行了加权，以确定采食量，体重增加和具有较高豆油列入饲料转化ratioDiets，显示在不同的阶段性能优越在预启动仅饲料转化率为显著（P 0In的初始阶段，有一个显著差异（P 0饲料转化率，每天平均增重
SCHNEIDERS, José Luiz et al.. Performance of broiler chickens at pre starter and starter phases using diets with different metabolizable energy values of ingredients, at different ages.[J]. Ciencia Rural, 2016,46(10): 1846-1851