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372篇 您的检索式:作者名="FENG J N"
    题名 作者 年代 出处 被引量
1全颗粒饲料对奶牛生产性能的影响显示文摘饲料中的中性洗涤纤维(NDF)含量和饲料颗粒直径是影响瘤胃功能的重要因素。试验评估了以颗粒饲料为主的奶牛瘤胃健康情况、NDF消化率和生产性能。选取8头荷斯坦母牛(336±30 d,体重346±35 kg),随机分配到交叉重复试验组中,奶牛安置于牛栏,自由采食。试验期为3周,前两周是适应期,最后一周为数据收集期。各组饲粮原料相同,但物理形式不同,分为全混合日粮(TMR)和颗粒料(直径=8 mm)。两组间物理有效NDF(pe NDF)不同,TMR组为39.8%,颗粒料组为11.8%。在试验过程中,干物质采食量(DMI)、饮水量、瘤胃反刍时间、瘤胃温度和pH情况均记录。3周后收集粪样,确定潜在的可消化NDF总消化率(pdNDF)。每阶段结束后计算平均日增重和饲料转化率。颗粒料组的DMI、DMI/体重和饮水量更高。而两组间平均日增重和饲料转化率无显著差异。颗粒料组的瘤胃反刍时间为241 min·d-1低于TMR组的507 min·d-1。饲料的不同物理外形对瘤胃温度、瘤胃pH无显著影响。TMR组的pdNDF总消化率为90.25%高于颗粒料组的86.82%。试验结果表明,动物易接受完整的颗粒饲料,DMI较高,且反刍时间减少,但瘤胃pH无显著变化。TMR组的pdNDF消化率显著增加。尽管两组奶牛在DMI和纤维消化方面表现不同,但总体表现相似,两组饲料的保存时间与其物理形式有关。在短期内,提供能满足NDF需求的完全颗粒饲料可改善瘤胃健康状况和动物生产性能,而较长时间的数据则需要进一步试验。Wang J Yang M Cao M Lin Y Che L Q Duraipandiyan V Al-Dhabi N A Fang Z F Xu S Y Feng B Liu G Wu D Bonfante E Palmonari A Mammi L Canestrari G Fustini M Formigoni A 2016饲料博览2016,0,12:2
2Influence of Eutrophication on the Distribution of Total Mercury and Methylmercury in Hydroelectric Reservoirs显示文摘Meng Bo Feng X B Chen C X Qiu G L Sommar J Guo Y N Liang P Wan Q 2010EN2010,,5:2
3Triblock copolymer syntheses of mesoporous silica with periodic 50 to 300 angstrom pores显示文摘ZHAO D FENG J HUO Q MELOSH N FREDRICKSON G H CHMELKA B F STUCKY G D 1998Science1998,279,5350:1
4Transient rotordynamic mo-deling of rolling element bearing systems显示文摘Liew A Feng N Hahn E J 2002ASME Journal of Engineering for Gas Turbines and Power2002,124,:1
5A Locally Adaptive Filter of Interferometric Phase Images显示文摘Wu N Feng D Z Li J 2006Geoscience and Remote Sensing Letters IEEE2006,3,:1
6Effect of Bi203 on physical, optical and structural properties of boron silicon bismuthate glasses 显示文摘GAO G HU L L FAN H Y WANG G N LI K F FENG S Y FAN S J CHEN H Y 2009Optical Materials2009,32,:1
7Design and assembly of antiCD16 ScFv antibody with two different linker peptides 显示文摘Feng J Xie Z Guo N 2003J Immunol Methods2003,282,12:1
8Study of making casting gradealuminum silicon alloy with coarse aluminum silicon alloyproduced by carbothcrmal reduction of aluminous ore 显示文摘Wang Y W Feng N X You J 2007LightMetals2007,,6:1
9Numerical earthquake response analysis of the Liyutan earth dam in Taiwan显示文摘FENG Z Y TSAI P H LI J N 2010Natural Hazards and Earth System Sciences2010,10,6:1
10The protein data bank显示文摘Berman H M Westbrook J Feng Z K Gilliland G Bhat T N Weissig H Shindyalov L N Bourne P E 0,,01:1
11Recombinant canine distem- per virus serves as bivalent live vaccine against rabies and ca- nine distemper显示文摘Wang X J Feng N Ge J Y 2012Vaccine2012,30,34:1
12Light and electron microscopy of the leucocytes of Crassostrea virginica( Mollusca: Pelecypoda) 显示文摘FENG S Y FENG J S BURKE C N 1971Zeitschrift For Zellforschung und Mikroskopische Anatomie1971,120,2:1
13Thermodynamic and kinetic investigations on the reaction of O(3P) with HNO显示文摘Du B N Zhang W C Feng C J 2004Journal of Molecular Structure (Theochem)2004,712,:1
14Localized deformation of SiC-Al composites 显示文摘Arsenault R J Shi N Feng C R 1991Mater Sci Eng A1991,131,:1
15Dynamic performance and control of squeeze mode MR fluid damperrotor system显示文摘WANG J MENG G FENG N 2005Smart Materials and Structures2005,14,4:1
16Pore Evolution Model of Ceramic Membrane during Constrained Sintering显示文摘QIU M H FENG J FAN Y Q XU N P 0,,03:1
17Robust multihop localization for wireless ser/sor networks with unreliable beacons 显示文摘Feng R J Guo X L Yu N 2012International Journal of Distributed Sensor Networks2012,13,2:1
18Role of extracellular protein in the formation and stability of aerobic granules 显示文摘Zhang L Feng X Zhu N Chen J 2007Enzyme and Microbial Technology2007,41,5:1
19A new surgical innovation forchronic constipation ( Jinling Procedure) : 2 years followup 显示文摘Li N Jiang J Feng XB 2011Am J Gastroenterol2011,106,2:1
20Transparent cap improves patients' tolerance of colonoscopy and shortens examination time by inexperienced endoscopists显示文摘Dai J Feng N Lu H 2010J Dig Dis2010,11,6:1
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