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1142篇 您的检索式:作者名="Hansen F"
    题名 作者 年代 出处 被引量
1高产奶量的母猪有更高的采食量和体动员显示文摘选择能哺育更大窝产仔数的超高产母猪以提高产仔数,但是综合考虑这些现代母猪产奶量、采食量和体动员相互之间联系的研究还很有限。试验旨在研究什么样的母猪产奶量高、窝产仔数多,不同胎次有何影响,以及哺乳期生产性能对下一胎繁殖性能有何影响。选择565头1~4胎母猪,试验期从产前7 d至断奶。产后第2天每窝仔猪统一调整为14头。产前7 d、产后第2天和断奶时测定母猪体重和背膘厚度。产后第2天和断奶时称取仔猪窝重。计算变量之间的皮尔森相关系数,建立回归模型。母猪的平均日采食量(6.1±1.1)kg,仔猪每天窝增重(2.92±0.53)kg,每头母猪的平均断奶仔猪数(13.0±1.1)头。总的来讲,与2~4胎母猪相比,1胎母猪平均日采食量和产奶量更低,下一胎总产仔数也下降,这可能是因为初产母猪相比经产母猪会动用更多体储。仔猪每窝平均日增重与母猪的采食量、窝产仔数和体重损失呈正相关。1~4胎母猪整个哺乳期日采食量每提高1 kg,仔猪窝日增重提高220~440 g,母猪哺乳期体重下降6.6~13.9 kg。但是每天平均产奶量提高1 kg,第4胎母猪哺乳期体重损失减少4.3~21.0 kg。下一胎总产仔数与上一胎产仔数呈正相关。总之,高采食量和高体动员是高产奶量的先决条件。母猪可能已经非常接近他们身体饲料摄取的生理极限,因此,未来的研究应着眼于优化哺乳期超高产母猪的饲粮能量和营养浓度以及初产母猪和经产母猪之间的区别。Strathe A V Bruun T S Hansen C F 李元凤 2017养猪2017,,4:8
2含有菊粉但不含羽扇豆的饲粮有助预防实验诱导的猪痢疾显示文摘猪痢疾是一种传染性黏膜出血的腹泻疾病,由定植于肠道的猪痢疾短螺旋体引起,能够诱发盲肠和结肠发炎。据报道饲料中添加菊苣根和甜羽扇豆可预防猪痢疾。本试验旨在验证是菊苣根中的菊粉而不是羽扇豆中的半乳糖起到保护作用的假设。Hansen C F Phillips N D La T.(等) 闫轶洁(译) 2010养猪2010,,6:2
3Detection of cesarean scars by transvaginal ultrasound显示文摘Vanessa Armstrong Wendy F Hansen Bradley J Van Voorhis Craig H Syrop 2002Obstetrics & Gynecology2002,,1:2
4Crisis in corporate America:The role of strategy 显示文摘HANSEN F D SMITH M C 2003Business Horizons2003,15,1:1
5Two step swelling process of polymer particles giving an enormous increase in absorption capacity显示文摘UGELSTAD J KAGGERUD K L HANSEN F K 1979Macromolecular Chemistry and Physics1979,180,:1
6Cyclic AMP induced neuronal differentiation via activation of p38 mitogen-activated protein kinase显示文摘Hansen T O Rehfeld J F Nielsen F C 2000J Neurochem2000,75,5:1
7Early on-treatment prediction of response to peginterferon alfa-2a for HBeAg-negative chronic hepatitisB using HBsAg and HBV DNA levels 显示文摘Rijckborst V Hansen BE Cakaloglu Y Ferenci P Tabak F Akdogan M Simon K Akarca US Flisiak R Verhey E Van Vuuren AJ Boucher CA ter Borg MJ Janssen HL 2010Hepatology2010,52,2:1
8Lake restoration by dosing aluminum relative to mobile phosphorus in the sediment 显示文摘Reitzel K Hansen J Andersen F O 2005Environmental Science & TechnoLogy2005,39,11:1
9Design and control of an LCL-filter based three-phase active rectifier显示文摘Liserre M Blaabjerg F Hansen S 2005IEEE Transac- tions on Industry Applications2005,41,5:1
10Autogenous deformatim and change of the relalive humidity in silica fume-modified cement paste显示文摘JENSON 0 M HANSEN P F 1996ACI Materials Journal1996,93,6:1
11Isolation of Lactococcus lactis nonsense suppressors and construction of a food-grade cloning vector显示文摘Dickely F Nilsson D Hansen E B 1995Mol Microbiol1995,15,5:1
12Validating Firewalls Using Flow Logics 显示文摘Nielson F Nielson H R Hansen R R 2002Theoretical Computer Science2002,283,2:1
13Detection of cesarean scars by transvaginal ultrasound 显示文摘Armstrong V Hansen W F Van Voorhis B J 2003Obstet Gyneeol2003,101,1:1
14Measurements of the wind stress, heat flux, and turbulence intensity during storm con- ditions over the North Sea显示文摘Geernaert G L Larsen S E Hansen F 1987Journal of Geophysical Research1987,92,13:1
15Capture of benzotriazole based Mannieh electrophiles by CH-acidic corn pounds显示文摘Monbaliu J C M Beagle L K Hansen F K 2013RSC Advances2013,3,13:1
16Real-lime illustration of vascular structures 显示文摘Ritter F Hansen C Dicken V 2006IEEE Transactions on Visualization and Computer Graphics2006,12,5:1
17Phenotypic reversion or death of cancer cells by altering signaling pathways in threedimensional contexts 显示文摘 Hansen RK Radisky D 2002J Natl Cancer Inst2002,94,19:1
18Phenotypic reversion or death of cancer cells by altering signaling pathways in threedimensional contexts显示文摘WANG F HANSEN PK RADISK D 2002J Natl Cancer Inst2002,94,19:1
19Particle interaction effects in antiferromagnetic NiO nanoparticles 显示文摘Bodker F Hansen M F Bender Koch C 2000Journal of Magnetism and Magnetic Materials2000,,221:1
20Abstract Interpretation of Mobile 显示文摘Nielson F Hansen R R Nielson H R 2003Science of Computer Programming2003,47,2:1
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