Pereira L F P, Adeola O
Department of Animal Sciences, Purdue University, West Lafayette, IN 47907 Department of Animal Science, Federal University of Minas Gerais, Belo Horizonte, Brazil.
Department of Animal Sciences, Purdue University, West Lafayette, IN 47907
Poult Sci. 2016 Sep 1;95(9):2081-9. doi: 10.3382/ps/pew089. Epub 2016 Mar 14.
The energy and phosphorus values of sunflower meal (SFM) and rice bran (RB) were determined in 2 experiments with Ross 708 broiler chickens from 15 to 22 d of age. In Exp.1, the diets consisted of a corn-soybean meal reference diet (RD) and 4 test diets (TD). The TD consisted of SFM and RB that partly replaced the energy sources in the RD at 100 or 200 g/kg and 75 or 150 g/kg, respectively, such that the equal ratios were maintained for all energy containing ingredients across all experimental diets. In Exp.2, a cornstarch-soybean meal diet was the RD and TD consisting of SFM and RB that partly replaced cornstarch in the RD at 100 or 200 g/kg and 60 or 120 g/kg, respectively. Addition of SFM and RB to the RD in Exp.1 linearly decreased (P < 0.01) the digestibility coefficients of DM, energy, ileal digestible energy (IDE), metabolizability coefficients of DM, nitrogen (N), energy, N correct energy, metabolize energy (ME), and nitrogen-corrected ME. Except for RB, the increased levels of the test ingredients in RD did affect the metabolizability coefficients of N. The IDE values (kcal/kg DM) were 1,953 for SFM and 2,498 for RB; ME values (kcal/kg DM) were 1,893 for SFM and 2,683 for RB; and MEn values (kcal/kg DM) were 1,614 for SFM and 2,476 for RB. In Exp.2, there was a linear relationship between phosphorus (P) intake and ileal P output for diets with increased levels of SFM and RB. In addition, there was a linear relationship between P intake and P digestibility and retention for diets with increased levels of SFM. There were a quadratic effect (P < 0.01) and a tendency of quadratic effect (P = 0.07) for P digestible and total tract P retained, respectively, in the RB diets. The P digestibility and total tract P retention from regression analyses for SFM were 46% and 38%, respectively.
在两项试验中，对15至22日龄的罗斯708肉鸡测定了葵花籽粕（SFM）和米糠（RB）的能量和磷值。在试验1中，日粮由玉米-豆粕基础日粮（RD）和4种试验日粮（TD）组成。试验日粮分别由葵花籽粕和米糠组成，它们以100或200克/千克以及75或150克/千克的比例部分替代基础日粮中的能量来源，从而使所有试验日粮中所有含能量成分的比例保持相等。在试验2中，玉米淀粉-豆粕日粮为基础日粮，试验日粮由葵花籽粕和米糠组成，它们分别以100或200克/千克以及60或120克/千克的比例部分替代基础日粮中的玉米淀粉。在试验1中，向基础日粮中添加葵花籽粕和米糠使干物质、能量、回肠可消化能量（IDE）的消化率系数以及干物质、氮（N）、能量、氮校正能量、代谢能（ME）和氮校正代谢能的代谢率系数呈线性下降（P<0.01）。除米糠外，基础日粮中试验成分水平的增加确实影响了氮的代谢率系数。葵花籽粕的IDE值（千卡/千克干物质）为1953，米糠为2498；ME值（千卡/千克干物质），葵花籽粕为1893，米糠为2683；MEn值（千卡/千克干物质），葵花籽粕为1614，米糠为2476。在试验2中，随着葵花籽粕和米糠水平增加的日粮，磷（P）摄入量与回肠磷排出量之间存在线性关系。此外，随着葵花籽粕水平增加的日粮，磷摄入量与磷消化率和保留量之间存在线性关系。在米糠日粮中，磷可消化率和全肠道磷保留量分别存在二次效应（P<0.01）和二次效应趋势（P=0.07）。通过回归分析得出，葵花籽粕的磷消化率和全肠道磷保留率分别为46%和38%。
