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Effects of organic chromium supplementation to finishing lambs diet on growth performance, carcass characteristics and meat quality

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Journal of Integrative Agriculture 2015年第3期14卷 567-574页

作者： Laura Moreno-Camarena Ignacio Domínguez-Vara José Bórquez-Gastelum juan Sánchez-Torres juan pinos-rodríguez Antonia Mariezcurrena-Berasain Ernesto Morales-Almaráz Abdelfattah Z M Salem Faculty of Veterinary Medicine and Animal Science Autonomous University of the State of Mexico Center of Biosciences University Autonomous of San Luis PotosiPalma of the Cruz Soledad of Graciano Sánchez 78321Mexico

The objective of this study was to evaluate supplemental organic chromium（Cr） to finishing lambs on growth performance, carcass characteristics, and meat quality. Eighteen Suffolk lambs（age（4.5±0.2） mon;（25.8±3.6） kg body weight（BW）） were randomly assigned to three levels of supplemental organic Cr（0.0, 0.2 and 0.4 mg kg^–1 dry matter（DM）） in a complete random design. Growth performance was evaluated for 70 d, and then lambs were slaughtered to study carcass characteristics and chemical composition of meat. Orthogonal contrasts were performed（contrast one-average level 0.2 ppm Cr vs. average level 0.4 ppm Cr; contrast two-level 0 vs. average levels（0.2＋0.4） ppm Cr）. Orthogonal polynomials were used to estimate the linear and quadratic effects of Cr concentrations. Growth and carcass performance were not affected by supplemental organic Cr. Muscle conformation and leg perimeter linearly increased（P〈0.05） as organic Cr level increased in the diet. Kidney fat decreased linearly（P〈0.05） as supplemental Cr increased. In Longissimus dorsi（LD）, the ash content decreased linearly, and shear force（kg cm^–2） increased（P〈0.05） as organic Cr level increased in the diet. It is concluded that organic Cr did not affect growth performance, but it improved positively the muscle conformation, reduced kidney fat, whereas in LD there was an increment in shear force in finishing carcass lambs.

关键词： carcass finishing lambs Longissimus dorsi organic chromium

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Performance assessment of two-dimensional hydraulic models for generation of flood inundation maps in mountain river basins

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Water Science and Engineering 2019年第1期12卷 11-18页

作者： juan pinos Luis Timbe Department of Water Resources and Environmental Sciences University of Cuenca

Hydraulic models for the generation of flood inundation maps are not commonly applied in mountain river basins because of the difficulty in modeling the hydraulic behavior and the complex topography. This paper presents a comparative analysis of the performance of four twodimensional hydraulic models (HEC-RAS 2D, Iber 2D, Flood Modeller 2D, and PCSWMM 2D) with respect to the generation of flood inundation maps. The study area covers a 5-km reach of the Santa B-arbara River located in the Ecuadorian Andes, at 2330 masl, in Gualaceo. The model's performance was evaluated based on the water surface elevation and flood extent, in terms of the mean absolute difference and measure of fit. The analysis revealed that, for a given case, Iber 2D has the best performance in simulating the water level and inundation for flood events with 20- and 50-year return periods, respectively, followed by Flood Modeller 2D, HEC-RAS 2D, and PCSWMM 2D in terms of their performance. Grid resolution, the way in which hydraulic structures are mimicked, the model code, and the default value of the parameters are considered the main sources of prediction uncertainty.

关键词： Two-dimensional hydraulic models Flood modeling Flood extent Water surface elevation High mountain river Ecuador

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Effects of maternal dietary omega-3 polyunsaturated fatty acids and methionine during late gestation on fetal growth,DNA methylation,and mRNA relative expression of genes associated with the inflammatory response,lipid metabolism and DNA methylation in placenta and offspring’s liver in sheep

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Journal of Animal Science and Biotechnology 2021年第2期12卷 611-625页

作者： Milca Rosa Velazquez Fernanda Batistel juan Manuel pinos rodriguez Alejandro Enrique Relling Facultad de Medicina Veterinaria y Zootecnia Universidad Veracruzana91710 VeracruzMexico Department of Animal Science Ohio Agricultural Research and Development Center(OARDC)The Ohio State University114 Gerlaugh Hall1680 Madison AveWoosterOH 44691USA Department of Animal Dairy and Veterinary SciencesUtah State UniversityLoganUT 84322USA

Background:Omega-3 PUFA or methionine(Met)supply during gestation alters offspring ***,the effect of both nutrients on fetal development has not been *** objective was to determine the effects of supplementation of these two nutrients during late gestation on fetal growth,DNA methylation,and mRNA expression of genes associated with the inflammatory response,and DNA ***(n=5/treatment)were fed from day 100 to 145 of gestation one of the following treatments:1)basal diet(NS)without fatty acids(FS)or methionine(MS)supplementation;2)FS(10 g/kg Ca salts,source omega-3 PUFA);3)MS(1 g/kg rumen protected methionine);and 4)FS and MS(FS-MS).On day 145,ewes were euthanized,and data from dams and fetus was ***(cotyledon),fetal liver,and blood samples were ***:A treatments interaction on fetal liver weight,ewe body weight and body condition score(BCS)was observed;FS-MS were heavier(P<0.01)than FS and MS,and FS-MS ewes had a better(P=0.02)BCS than *** increased(P=0.03)ewe plasma glucose *** liver global DNA methylation increased(P<0.01)in FS and *** treatments modify the mRNA relative expression on some of the genes *** the fetal liver,FS increased(P=0.04)the mRNA relative expression of arachidonate-5-lipoxygenase-activatingprotein and tended to decrease(P=0.06)***,MS decreased(P=0.04)DNA-methyltransferase-1 and tended to decrease(P=0.08)free-fatty-acid-receptor-1 mRNA relative ***,FS-MS decreased mRNA relative expression of tumor-necrosis-factor-alpha(P=0.05),peroxisomeproliferator-activated-receptor-delta(P=0.03)and gamma(P=0.04),tended to decrease(P≤0.09)interleukin-6,fatty-acid-transport-protein-1,and delta-5-desaturase,and increased adenosylhomocysteinase(P=0.04)mRNA relative *** cotyledon,FS tended to decrease fatty acid binding protein 4(P=0.09)mRNA relative ***:Omega-3 PUFA and Met s

关键词： Fat supplementation Fetal programming Maternal nutrition Nutrients Rumen protected methionine

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Appraisal of CO2 storage potential in compressional hydrocarbon-bearing basins: Global assessment and case study in the Sichuan Basin(China)

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Geoscience Frontiers 2020年第6期11卷 2309-2321页

作者： Xiaolong Sun juan Alcalde Enrique Gomez-Rivas Lucía Struth Gareth Johnson Anna Travé Department of Mineralogy Petrology and Applied GeologyUniversity of BarcelonaMartíi Franquès s/nBarcelona08028Spain Department of Structure and Dynamics of the Earth Institute of Earth Sciences Jaume AlmeraICTJA-CSICLluis Sole i Sabaris s/nBarcelona08028Spain Department of Civil and Environmental Engineering University of StrathclydeGlasgowG11XZUnited Kingdom

Carbon capture and storage(CCS)has been proposed as a potential technology to mitigate climate ***,there is currently a huge gap between the current global deployment of this technology and that which will be ultimately *** CO2 can be captured at any geographic location,storage of CO2 will be constrained by the geological storage potential in the area the CO2 is *** geological storage potential can be evaluated at a very high level according to the tectonic setting of the target *** date,CCS deployment has been restricted to more favourable tectonic settings,such as extensional passive margin and post-rift basins and compressional foreland ***,to reach the adequate level of deployment,the potential for CCS of regions in different tectonic settings needs to be explored and assessed ***,the potential of compressional basins for carbon storage has not been universally evaluated according to the global and regional carbon emission ***,we present an integrated source-to-sink analysis tool that combines comprehensive,open-access information on basin distribution,hydrocarbon resources and CO2 emissions based on geographical information systems(GIS).Compressional settings host some of the most significant hydrocarbon-bearing basins and 36% of inland CO2 emissions but,to date,large-scale CCS facilities in compressional basins are concentrated in North America and the Middle East *** source-to-sink tool allows identifying five high-priority regions for prospective CCS development in compressional basins:North America,north-western South America,south-eastern Europe,the western Middle East and western *** present a study of the characteristics of these areas in terms of CO2 emissions and CO2 storage ***,we conduct a detailed case-study analysis of the Sichuan Basin(China),one of the compressional basins with the greatest CO2 storage *** results indicate that c

关键词： CO2 storage Compressional basins CO2 emissions Sichuan Basin

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趋化因子Fractalkine协同M2型巨噬细胞对胰腺癌细胞株生物学功能的影响

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肿瘤 2019年第12期39卷 985-992,1010页

作者：刘惠娟谢娟黄李雅宁夏医科大学临床医学院宁夏银川750004 宁夏医科大学总医院消化内科宁夏银川750004

目的:探讨趋化因子Fractalkine(FKN)联合肿瘤相关M2型巨噬细胞对人胰腺癌PANC-1细胞增殖、侵袭和迁移等生物学功能的影响。方法:将含FKN基因序列的重组慢病毒HBLV-h-FKN-GFP-PURO感染人胰腺癌PANC-1细胞,同时用佛波酯及白细胞介素4序贯... 详细信息

目的:探讨趋化因子Fractalkine(FKN)联合肿瘤相关M2型巨噬细胞对人胰腺癌PANC-1细胞增殖、侵袭和迁移等生物学功能的影响。方法:将含FKN基因序列的重组慢病毒HBLV-h-FKN-GFP-PURO感染人胰腺癌PANC-1细胞,同时用佛波酯及白细胞介素4序贯诱导人白血病单核细胞THP-1成为M2型巨噬细胞,然后通过Transwell小室系统建立胰腺癌细胞与M2型巨噬细胞非接触式共培养模型。共培养后收集胰腺癌细胞,采用CCK-8法检测PANC-1细胞的增殖情况,Transwell小室法和划痕愈合实验分别检测细胞的侵袭和迁移能力。结果:HBLV-h-FKN-GFP-PURO感染人胰腺癌细胞PANC-1后,FKN蛋白表达水平较未感染对照组和空病毒感染组明显升高(P值均pinos<0.01)。过表达FKN后,PANC-1细胞趋化共培养M2型巨噬细胞的能力明显增强(P <0.001)。FKN过表达后,PANC-1细胞的增殖、侵袭和迁移能力均增强(P值均<0.001);而与M2型巨噬细胞共培养后,PANC-1细胞的增殖、侵袭和迁移能力均更加显著地增强(P值均<0.01);依据析因设计资料的双向分组方差分析结果提示,FKN与M2型巨噬细胞之间存在交互作用(P增殖<0.01,P侵袭<0.01,P迁移<0.05)。结论:趋化因子FKN能促使人胰腺癌PANC-1细胞趋化募集M2型巨噬细胞。FKN和M2型巨噬细胞均可增强PANC-1细胞的增殖、侵袭和迁移能力,且二者之间具有交互协同作用。

关键词：胰腺肿瘤趋化因子Fractalkine M2型巨噬细胞共同培养技术

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