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81篇 您的检索式:作者名="Cook K F"
    题名 作者 年代 出处 被引量
1高羊茅干草部分替代玉米和紫花苜蓿青贮饲料对奶牛消化、泌乳性能的影响显示文摘试验旨在研究高羊茅干草替代玉米或紫花苜蓿青贮对奶牛中性洗涤纤维(NDF)消化率、泌乳性能的影响。选取初产哺乳荷斯坦奶牛(产奶75±35 d)24头,经产荷斯坦奶牛(产奶68±19 d)40头,随机分成4组,共设置32个进料闸门,记录采食量。每组8个进料阀门,以1头牛为1个试验单位,每头牛试验过程中可接触8个进料闸门。试验用高羊茅干草(TF)取代玉米青贮饲料(CS)或紫花苜蓿青贮饲料(AS),试验设计为:33%AS和67%CS(空白组)、60%TF和40%AS(试验1组)、60%TF和40%CS(试验2组)、33%TF和67%CS(试验3组)。试验进行7周,前2周进行预饲。试验结果表明,各组间牛奶产量无显著差异,平均值为40.4 kg·d^(-1)。各组间牛奶中脂肪含量和浓度、蛋白质含量和浓度均无显著差异,平均值为1.58 kg·d^(-1)和3.94%、1.28 kg·d^(-1)和3.15%。与试验1组(22.1 kg·d^(-1))、试验3组(22.7 kg·d^(-1))相比,空白组的干物质摄入量最高,为24.5kg·d^(-1)。各组间总的干物质消化率无显著差异,平均值为66.2%。与试验2组(44.4%)、试验3组(45.3%)相比,空白组的NDF消化率较低,为37.8%,与试验1组(42.4%)相近。各组间奶牛体内NDF消化率(42.3%)与预估的NDF消化率(42.6%)相近。试验结果表明,饲喂高羊茅干草可提高饲料中NDF消化率,部分替代玉米和紫花苜蓿时对产奶量无显著影响,在市场价格较低时,可作为经济实用的奶牛饲料。Bender R W Lopes F Cook D E Combs D K 2016饲料博览2016,0,8:2
2Avian pneumovirus infection of laying hens:experimental studies显示文摘Cook J K Chesher J Orthel F 0,,06:1
3Soil-dependentwetting from trickle emitters : Implications for system de-sign and management 显示文摘Thorburn P J Cook F J Bristow K L 2003Irrigation Science2003,22,34:1
4Xenon purity analysis for exo-200 via mass spectrometry 显示文摘Dobi A Hall C Slutsky S Yen Y R Aharmin B Auger M Barbeau P S Benitez-Medina C Breidenbach M Cleveland B Conley R Cook J Cook S Counts I Craddock W Daniels T Davis C G Davis J Devoe R Dixit M Dolinski M J Donato K Fairbank Jr W Farine J Fierlinger P Franco D Giroux G Gornea R Graham K Gratta G Green C Hagemann C Hall K Hallman D Hargrove C Herrin S Hughes M Hodgson J Juget F Karelin A Kaufman L J Kuchenkov A Kumar K Leonard D S Lutter G Mackay D Maclellan R Marino M Mong B Montero Diez M Morgan P MUller A R Neilson R Odian A Oullivan K Piepke A Pocar A Prescott C Y Pushkin K Rivas A Rollin E Rowson P C Sabourov A Sinclair D Skarpaas K Stekhanov V Strickland V Swift M Twelker K Vuilleumier J L Vuilleumier J M Weber M Wichoski U Wodin J Wright J D Yang L 2012Nuclear Instruments and Methods in Physics Research Section A: Accelerators Spectrometers Detectors and Associated Equipment2012,675,:1
5Comparison of autofocus methods for automated microseopy显示文摘Cook F L Culp K Talsania K 1991Cytometry1991,12,:1
6Peirce, Fallibilism, and the Science of Mathematics 显示文摘Cooke K F 2003Philosophia Mathematics2003,,3:1
7Restaurant consumer acceptance of beef loin strip steaks tenderized with calcium chloride显示文摘Hoover L C Cook K D Miller M F 1995J Anim Sci1995,73,:1
8Tree-ring reconstructed megadroughts over North America since AD 1300显示文摘Stahle D W Fye F K Cook E R 2007Climatic Change2007,83,12:1
9Development and validation of Patient Reported Impact of Spasticity Measure (PRISM)显示文摘Cook K F Teal C R Engebretson J C 0,,03:1
10The nature and practice of biological control of plant pathogens 显示文摘Cook R J Baker K F 1983Physiopathology1983,32,:1
11Enhanced sensitivity to neutralizing antibodies in a variant of equine infectious anemia virus is linked to amino acid substitutions in the surface unit envelope glycoprotein显示文摘 Berger S L Rushlow K E 1995J Virol1995,69,3:1
12Several fibroblast growth factors are expressed during pre-attachment bovine conceptus development and regulate interferon-tau expression from trophec-toderm显示文摘COOKE F N T PENNINGTON K A YANG Q et a1 2009Reproduction2009,137,:1
13Soil-dependent wetting from trickle emitters:implications for system design and management显示文摘Thorburn P J Cook F J Bristow K L 2003Irrigation Science2003,22,34:1
14The growth of YBCO films with high critical current at reduced pressures using the BaF2 ex situ process显示文摘YOO J LEONARD K J HSU H S HEATHERLY L LIST F A LEE D F GAPUD A A MARTIN P M COOK S PARANTHAMAN M GOYAL A KROEGER D M 2004Superconductor Science and Technology2004,17,:1
15A comparison of three polytomous item response theory models in the context of testlet scoring显示文摘Cook K F Dodd B G Fitzpatrick S J 1998Journal of outcome measurement1998,3,1:1
16Role of proline isomerization in folding of ribonuclease A at low temperatures显示文摘COOK K H SCHMID F X BALWIN R L 1979Proc Natl Acad Sci USA1979,76,12:1
17Ecosystem response ofpasture soil communities tofiimigation-induced microbial diversityreductions: an examination of thebiodiversity-ecosystemfunctionrelationship 显示文摘Griffiths B S Ritz K Bardgett R D Cook R Christensen S Ekelund F Sorensen SJ Baath E Bloen J de Ruiter P C DolfingJ Nicolardot B 2000Oikos2000,90,2:1
18Effect of pH on the reaction of 2, 4-dinitrophenylhydrazine with formaldehyde and acetaldehyde 显示文摘Bicking M L Cooke W M Kawahara F K 1988J Chromatogr1988,455,:1
19Simulation of wake vortex effects for UAVs in close formation flight显示文摘Saban D Whidborne J F Cooke A K 2009Aeronautical Journal2009,113,11:1
20An Association between Atheroselerosis and Venous Thrombosis显示文摘Duggirala M K Cook D A Mauck K F 2003N Engl J Med2003,349,4:1
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