本研究旨在探讨生血宝合剂药渣(Shengxuebao Mixture drug residue,SXBR)的抗营养特征及其对新西兰兔生长性能的影响,为其饲料化开发提供基础数据。首先,对SXBR、生血宝合剂组方中的单味药材以及市面上常用饲料原料,进行木质素、木聚糖...本研究旨在探讨生血宝合剂药渣(Shengxuebao Mixture drug residue,SXBR)的抗营养特征及其对新西兰兔生长性能的影响,为其饲料化开发提供基础数据。首先,对SXBR、生血宝合剂组方中的单味药材以及市面上常用饲料原料,进行木质素、木聚糖、果胶、单宁和植酸等抗营养因子的含量测定和对比分析。然后,分别将不同比例SXBR添加至新西兰兔日粮中测定其营养水平,连续饲喂30 d后,对新西兰兔各营养物质表观消化率等生产性能指标进行测定。最后,采用UPLC-TOF-MS技术检测SXBR入血毒性成分,并观察各组肝脏、回肠病理切片。研究结果表明,SXBR木质素含量(9.64%)高于大部分常见饲料原料,仅次于米糠。SXBR中的木质素主要来源于狗脊、女贞子、制何首乌等质地较为坚硬的药材。随着SXBR的添加,饲料营养水平逐步提升。体内实验结果表明SXBR对新西兰兔体重增长无影响,但当兔日粮中添加20%的SXBR后,粗蛋白的表观消化率显著降低(P=0.003)。SXBR血清样品未检出毒性物质,对肝脏和肠道无毒害作用。综上,SXBR作为饲料添加剂安全性良好,但其木质素水平较为突出,对新西兰兔粗蛋白的表观消化率产生较大负面影响,可将减少木质素含量增加饲料蛋白可消化率作为解决该问题的主要方向。展开更多
We report on the first observation of the neutron-rich nucleus^(131)Ag.This isotope was produced via fragmentation reactions of intense secondary radioactive ion beams,including 134,135Sn.The secondary beams were prod...We report on the first observation of the neutron-rich nucleus^(131)Ag.This isotope was produced via fragmentation reactions of intense secondary radioactive ion beams,including 134,135Sn.The secondary beams were produced from induced fission reactions from a stable 238U beam at 345 MeV/nucleon.Secondary reaction residues were selected by the ZeroDegree spectrometer and identified by measuring their magnetic rigidity,time of flight,energy loss,and total kinetic energy.展开更多
文摘本研究旨在探讨生血宝合剂药渣(Shengxuebao Mixture drug residue,SXBR)的抗营养特征及其对新西兰兔生长性能的影响,为其饲料化开发提供基础数据。首先,对SXBR、生血宝合剂组方中的单味药材以及市面上常用饲料原料,进行木质素、木聚糖、果胶、单宁和植酸等抗营养因子的含量测定和对比分析。然后,分别将不同比例SXBR添加至新西兰兔日粮中测定其营养水平,连续饲喂30 d后,对新西兰兔各营养物质表观消化率等生产性能指标进行测定。最后,采用UPLC-TOF-MS技术检测SXBR入血毒性成分,并观察各组肝脏、回肠病理切片。研究结果表明,SXBR木质素含量(9.64%)高于大部分常见饲料原料,仅次于米糠。SXBR中的木质素主要来源于狗脊、女贞子、制何首乌等质地较为坚硬的药材。随着SXBR的添加,饲料营养水平逐步提升。体内实验结果表明SXBR对新西兰兔体重增长无影响,但当兔日粮中添加20%的SXBR后,粗蛋白的表观消化率显著降低(P=0.003)。SXBR血清样品未检出毒性物质,对肝脏和肠道无毒害作用。综上,SXBR作为饲料添加剂安全性良好,但其木质素水平较为突出,对新西兰兔粗蛋白的表观消化率产生较大负面影响,可将减少木质素含量增加饲料蛋白可消化率作为解决该问题的主要方向。
基金the National Basic Research Program of China under Grant No 2013CB834402the National Natural Science Foundation of China under Grant Nos 11035001 and 11275011.
文摘We report on the first observation of the neutron-rich nucleus^(131)Ag.This isotope was produced via fragmentation reactions of intense secondary radioactive ion beams,including 134,135Sn.The secondary beams were produced from induced fission reactions from a stable 238U beam at 345 MeV/nucleon.Secondary reaction residues were selected by the ZeroDegree spectrometer and identified by measuring their magnetic rigidity,time of flight,energy loss,and total kinetic energy.
