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Abstract：
The objective of this study was to determine the ileal digestible energy (IDE), ME, and MEn of rice, broken rice, and rice bran. The birds were fed a standard starter diet from day 0 to 14 and experimental diets from day 15 to 21 after hatching. A total of 336 birds were grouped by BW and assigned to 7 diets, each diet comprised 8 replicates with 6 birds per replicate. The diets comprised a reference diet (RD) and 6 test diets (TD). The TD contained 2 levels of rice, broken rice or rice bran that partly replaced the energy sources in the RD at 120 or 240 g/kg (rice and broken rice) or 150 or 300 g/kg (rice bran). Addition of rice or broken rice to RD linearly increased (P < 0.01) ileal digestibility of DM, energy, as well as total tract metabolizability of DM, energy, and N-corrected energy in the TD. The inclusion of rice bran in the TD linearly decreased (P < 0.01) energy digestibility and utilization in the test diet. Regressions of rice-associated, broken rice-associated, or rice bran-associated IDE, ME, or MEn intake in kcal against rice, broken rice, or rice bran intake were as follows: IDE = Y = 2 (6) + 3,185 (73) × Rice + 3,199 (72) × Broken Rice + 2,562 (61) × Rice Bran, r2 = 0.98; ME = Y = 8 (6) + 3,103 (72) × Rice + 3,190 (71) × Broken Rice + 2,709 (60) × Rice Bran, r2 = 0.98; MEn = Y = 4 (5) + 3,014 (68) × Rice + 3,092 (101) × Broken Rice + 2,624 (57) × Rice Bran, r2 = 0.98; Based on the regression equations, the IDE, ME, MEn values (kcal/kg of DM) of rice were 3,185, 3,103 and 3,014, respectively, while for broken rice, the values were 3,199, 3,190, and 3,092 and for rice bran, the values were 2,562, 2,709, and 2,624, respectively.
摘要：
这项研究的目的是确定回肠可消化能（IDE），我,和米饭，碎米,还有米糠.在孵化后,从第0天至第14天饲喂鸟类标准起始饮食,从第15天至第21天饲喂实验饮食。总共336只鸟按BW分组，并分配给7种饮食，每个饮食包括8个重复，每个重复6只鸟。饮食包括参考饮食(RD)和6种测试饮食(TD)。TD包含2级大米，碎米或米糠，以120或240克/千克（大米和碎米）或150或300克/千克（米糠）部分替代RD中的能源。向RD中添加大米或碎米线性增加（P<0.01）DM的回肠消化率，能源,以及DM的全道代谢性，能源,和TD中的N校正能量。TD中包含的米糠线性降低了测试日粮中的能量消化率和利用率（P<0.01）。水稻相关的回归，碎米相关，或米糠相关的IDE，我,或者MEn对大米的千卡摄入量，碎米,或米糠的摄入量如下：IDE=Y=2（6）3,185（73）×大米3,199（72）×碎米2,562（61）×米糠，r2=0.98;ME=Y=8(6)+3,103(72)×大米+3,190(71)×碎米+2,709(60)×米糠,r2=0.98;MEn=Y=4(5)+3,014(68)×大米+3,092(101)×碎米+2,624(57)×米糠,r2=0.98；根据回归方程，IDE,我,大米的MEn值（kcal/kgDM）分别为3,185、3,103和3,014，而对于碎米，分别为3199,3190,3092,米糠,数值分别为2,562,2,709和2,624.
