检索结果-南通市图书馆

Feeding Calcium Salts of Linseed Oil on Metabolic Status and Reproductive Traits in Grazing Dairy Cows

Open Journal of Animal Sciences 2024年第3期14卷 219-233页

作者： Jesica daniela Iorio Yaliska Moreno González Maria Florencia Olmeda Dino Curletto daniel edgardo scandolo Martin Guillermo Maciel Rafael Alejandro Palladino Mauricio Javier Giuliodori Eloy Eduardo Salado School of Agriculture of the University of Buenos Aires (FAUBA) Buenos Aires Argentina Faculty of Agricultural Sciences National University of Lomas de Zamora (UNLZ) Lomas de Zamora Argentina Rafaela Agricultural Experiment Station National Institute of Agricultural Technology (INTA) Rafaela Argentina Faculty of Veterinary Science La Plata National University (FCV) La Plata Argentina

This experiment aimed to evaluate the effect of calcium salts of linseed oil (rich in alpha-linolenic acid (ALA, C18:3n-3) on metabolic and reproductive traits in high-producing dairy cows under grazing. Thirty-six Holstein dairy cows were randomly assigned, in a complete block design, to receive ALA supplementation (0.85 kg∙day−1 of calcium salts of linseed oil) or to remain as untreated control (CON). The concentrate was formulated to offer the same amount of energy across treatments (CON cows received an extra kg of corn to compensate for the higher energy density of ALA treatment). A PMR + Alfalfa pasture was offered to all cows at the same time. A fixed time artiﬁcial insemination (FTAI) at 80 DIM, preceded by a Presynch plus Ovsynch protocol was implemented for the first service and later, on return to estrus, heat detection and artiﬁcial insemination (AI) were performed. Pregnancy diagnosis was checked at 30, 42, 60, and 90 d after AI. Blood and milk samples were taken biweekly. Treatment affected plasma cholesterol concentration (160.36 vs. 186.70 mg∙dl−1, p = 0.03, for ALA and CON, respectively) and on size of corpus luteum (CL, 17.6 vs. 13.7 mm, p = 0.02, for ALA and CON, respectively). Supplementation tended (p = 0.136) to increase conception rate by 200 DIM (81.69% vs. 55.43% in ALA and CON cows, respectively). However, treatment had no effect (p > 0.05) on body weight (BW), body condition score (BCS), and circulating levels of beta-hydroxybutyrate (BHBA), glucose, insulin, growth hormone (GH) and insulin-like growth factor (IGF-I). Our results suggest that supplementation with calcium salts of linseed oil could enhance ovarian function without affecting energy metabolism in early lactation dairy cows.

关键词： α-Linolenic Acid Supplementation Reproduction Grazing Dairy Cows

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Vegetation Response To Soil And Morphological Properties In An Arid Region Alluvial Fan Landscape. Pre-Andes Of San Juan， Argentina

引用

Journal of Earth Science 2024年

作者： FLORES daniel Germán OCA?A Raúl Emmanuel MELIáN edgardo ORTEG Andrés ESPER ANGILLIERI María Yanina PITTALUGA María Alejandra CIGEOBIO (CONICET-UNSJ) Av.José I.de la Roza y Meglioli Gabinete de Geología Ambiental， INGEO， Universidad Nacional de San Juan， Av.José I.de la Roza y Meglioli

The Monte Desert is characterized by a great diversity of landforms created with fluvial， alluvial which the vegetation patterns are related to. The present work has the following objectives: 1: determine whether topographical attributes， surface characteristics， soil properties and vegetation patterns vary between alluvial landforms， and 2: define whether morphometric， soil and surface properties influence vegetation patterns along alluvial landscape. Morphometric data were obtained by processing a 5 m digital elevation model. The coverage of rock fragments， fine sediments and mulch was quantified. Observations and descriptions of the soil profiles were restricted to the uppermost 50 cm. Vegetation properties were calculated using a Point Quadrat Method. The relationship between variables was evaluated through multivariate statistical analysis. The main results show the presence of 45 plant species distributed in 19 families， where shrubs are dominant. The wind effect， topographic wetness and dissection of the landscape are limiting factors of diversity. The coverage of superficial rock fragments influence vegetation coverage through the distribution and availability of rainwater. Furthermore， the different soil textures reveal that the silt content favors an increase in vegetation coverage. The presence of V horizon could condition the installation and development of vegetation in the early stages of growth.

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Estimating the geographic range of a threatened shark in a data-poor region： Cetorhinus maximus in the South Atlantic Ocean

引用

Current Zoology 2015年第5期61卷 811-826页

作者： Luis O. LUCIFORA Santiago A. BARBINI edgardo E. DI GIACOMO Juan A. WAESSLE daniel E. FIGUEROA Instituto de Biologia Subtropical - Iguazu Consejo Nacional de Investigaciones Cientificas y Tecnicas Universidad Nacional de Misiones Puerto Iguazu Misiones Argentina Laboratorio de Ictiologia Instituto de Investigaciones Marinas y Costeras Consejo Nacional de Investigaciones Cientificas y Tecnicas Universidad Nacional de Mar del Plata Mar del Plata Provincia de Buenos Aires Argentina Grupo Condros Instituto de Biologia Marina y Pesquera "Almirante Stomi" Universidad Nacional del Comahue San Antonio Oeste Rio Negro Argentina Instituto Nacional de Investigacion y Desarrollo Pesquero Mar del Plata Provincia de Buenos Aires Argentina

The distribution of the planktivorous basking shark Cetorhinus maximus is influenced by zooplankton abundance at small scales and temperature at medium scales in the North Atlantic. Here, we estimate the distribution of basking sharks on South Atlantic continental shelves, and the relative importance of chlorophyll concentration, as a proxy for zooplankton abun- dance, and temperature in determining habitat suitability for basking sharks at large scales. We used maximum entropy （MaxEnt） and maximum likelihood （MaxLike） species distribution modelling to test three hypotheses： the distribution of basking sharks is determined by （1） temperature, （2） chlorophyll concentration, or （3） both chlorophyll and temperature, while considering other factors, such as oxygen and salinity. Off South America, basking shark habitat included subtropical, temperate and cool-temperate waters between approximately 20°S and 55°S. Off Africa, basking shark habitat was limited to cool-temperate waters off Namibia and southern South Africa. MaxLike models bad a better fit than MaxEnt models. The best model included minimum chlorophyll concentration, dissolved oxygen concentration, and sea surface temperature range, supporting hypothesis 3. However, of all variables included in the best model, minimum chlorophyll concentration had the highest influence on basking shark distribution. Unlike the North Atlantic distribution, the South Atlantic distribution of basking sharks includes subtropical and cool-temperate waters. This difference is explained by high minimum chlorophyll concentration off southern Brazil as compared to North Atlantic subtropical areas. Observations in other regions of the world support this conclusion. The highest habitat suitability for basking sharks is located close to nearshore areas that experience high anthropogenic impact [Current Zoology 61 （5）： 811-826, 2015].

关键词： Basking shark Chondrichthyes Geographic range MaxEnt MaxLike Southern Hemisphere

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Biocomposites Based on Thermoplastic Starch and Granite Sand Quarry Waste

引用

Journal of Renewable Materials 2019年第4期7卷 393-402页

作者： María G.Passaretti Mario D.Ninago Cecilia I.Paulo Horacio A.Petit edgardo F.Irassarc daniel A.Vega Marcelo A.Villar Olivia V.López Planta Piloto de Ingeniería Química PLAPIQUI(UNS-CONICET)Camino"La Carrindanga"Km 7Bahía Blanca8000Buenos AiresArgentina Departamento de Ingeniería Química Universidad Nacional del Sur(UNS)Bahía Blanca8000Buenos AiresArgentina Facultad de Ciencias Aplicadas a la Industria(FCAI) Universidad Nacional de Cuyo(UNCuyo)Bernardo de Irigoyen 375San Rafael5600MendozaArgentina Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET) Godoy Cruz 2290Ciudad Autónoma de Buenos AiresC1425FQBBuenos AiresArgentina Facultad de Ingeniería Universidad Nacional del Centro de la Provincia de Buenos Aires(UNCPBA).Centro de Investigaciones en Física e IngenieríaCIFICEN(UNCPBA-CICPBA-CONICET)7400OlavarríaArgentina Instituto de Física del Sur IFISUR(UNS-CONICET)Bahía Blanca8000Argentina

Granite stone is a by-product of the rock crushing *** industrial waste in powder form that causes health problems and environmental *** particles fraction can be used as a partial replacement of sand in concrete *** this work,an alternative exploitation of this waste fraction is *** sand(GS)with particles mean size of ~1μm was employed as thermoplastic starch(TPS)filler at different *** were obtained by melt-mixing and thermo-compression,achieving translucent and easy to handle films.A good GS dispersion within the matrix was evidenced by *** presence induced a shift of starch’s melting point to higher values and a better thermal *** UV absorption capacity was increased ~90% by GS *** increment in TPS Young’s modulus and maximum tensile stress of 5 and 3 times,respectively was observed by adding 5%w/w GS.

关键词： Thermoplastic starch granite sand melt processing final properties

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Feeding Calcium Salts of Linseed Oil on Productive Performance and Milk Fatty Acid Profile in Grazing Dairy Cows

引用

Open Journal of Animal Sciences 2020年第4期10卷 761-781页

作者： Yaliska Moreno González Jesica Iorio María Florencia Olmeda Dino Curletto daniel scandolo Martín Guillermo Maciel Alejandra Cuatrin Rafael Alejandro Palladino Carolina Pérez Eloy Eduardo Salado Faculty of Agriculture University of Buenos Aires Buenos Aires Argentina Faculty of Agricultural Science National University of Lomas de Zamora Buenos Aires Argentina INTA (National Institute of Experimental Agriculture) Research Station Rafaela Rafaela Santa Fe Argentina CONICET (National Research Council of Argentina) Buenos Aires Argentina INTA (National Institute of Experimental Agriculture) Food Technology Institute Castelar Buenos Aires Argentina

The objective of this study was to determine the effect of supplying calcium salts of linseed oil (Ca-FA) rich in omega-3 (α-linolenic acid) on the production and chemical composition of milk and its nutraceutical value in dairy cows in early lactation. The trial lasted 12 weeks (2 weeks for adaptation to lipids and 10 weeks of data collection). A total of 36 Holstein dairy cows with 58.0 ± 17.0 days in milk (DIM), 594.1 ± 92.4 kg BW, 2.6 ± 1.5 parity and 38.9 ± 9.3 kg milk day-1 were used in a randomized complete block design. The treatments were: 1) Omega-3 (O3): 5.2 kg DM day-1 of concentrate including 0.7 kg DM of Ca-FA + 13.5 kg DM day-1 of partial mixed ration (PMR) + 12 kg DM day-1 of alfalfa pasture (Medicago sativa) and 2) Control (C): diet similar to O3 but lipid supplementation was replaced by cracked corn grain so that the diets were isoenergetic. No treatment effect was detected (P > 0.05) for any milk production and composition variables, except for urea in milk that was slightly higher in O3 (P = 0.02). The treatment × week interaction was significant (P ·day-1 and 3.86% vs. 3.23% for fat yield and content, respectively). Total DMI and PMR were similar (P > 0.05) between treatments. Concentrate intake was higher (P < 0.01) in C compared with O3. Pasture DMI tended (P = 0.06) to be greater for cows that

关键词： Dairy Cow Calcium Salts of Linseed Oil α-Linolenic Acid Nutraceutical Value

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

卫生系统知证政策指导：指导制定的基本原理和挑战

引用

中国循证医学杂志 2014年第7期14卷 777-782页

作者： Xavier Bosch-Capblanch John N. Lavis Simon Lewin Rifat Atun John-Arne Rottingen daniel Droesche Lise Beck edgardo Abalos Fadi El-Jardali Lucy Gilson Sandy Oliver Kaspar Wyss Peter Tugwell Regina Kulier Tikki Pang Andy Haines 王琪(译) 吴琼芳(译) 陈耀龙(审校) 杨克虎(审校) Swiss Tropical and Public Health Institute BaselSwitzerland University of Basel BaselSwitzerland McMaster Health Forum Centre for Health Economics and Policy AnalysisDepartment of Clinical Epidemiology and Biostatisticsand Department of Political ScienceMcMaster UniversityHamiltonOntarioCanada Norwegian Knowledge Centre for the Health Services OsloNorwayand Health Systems Research UnitMedical Research Council of South AfricaCape TownSouth Africa Global Fund to Fight AIDS Tuberculosis and MalariaGenevaSwitzerland Harvard Kennedy School CambridgeMassachusettsUnited States of America Centro Rosarino de Estudios Perinatales RosarioArgentina Department of Health Policy and Management American University of BeirutBeirutLebanonand McMaster Health ForumMcMaster UniversityHamiltonOntarioCanada School of Public Health University of Cape Town and Department of Global Health and DevelopmentLondon School of Hygiene and Tropical MedicineUnited Kingdom EPPI-Centre Social Science Research UnitInstitute of EducationLondonUnited Kingdom Centre for Global Health Institute of Population HealthUniversity of OttawaOttawaOntarioCanada Innovation InformationEvidence and ResearchWorld Health OrganizationGenevaSwitzerland Departments of Social and Environmental Health Research and of Nutrition and Public Health Research London School of Hygiene&Tropical MedicineLondonUnited Kingdom 兰州大学循证医学中心/中国GRADE中心兰州大学基础医学院兰州730000 甘肃省循证医学与临床转化重点实验室兰州730000

本文是《PLoS Medicine》关于卫生系统知证政策指导三篇系列文章的第一篇,阐述了应如何将证据转化为指导,以形成卫生系统政策,并促进临床和公共卫生干预的实施。其要点如下:①薄弱的卫生系统阻碍了有效干预的实施,加强此系统的政策需要... 详细信息

本文是《PLoS Medicine》关于卫生系统知证政策指导三篇系列文章的第一篇,阐述了应如何将证据转化为指导,以形成卫生系统政策,并促进临床和公共卫生干预的实施。其要点如下:①薄弱的卫生系统阻碍了有效干预的实施,加强此系统的政策需要基于当前可得的最佳证据;②卫生系统证据最好以政策制定过程参考的指导的形式呈现,但目前卫生系统指导制定质量较差;③将问题、干预及实施相关的研究转化为影响卫生系统组织方式的决策和政策是卫生系统指导制定面临的一个挑战;④制定及时且适用于广大卫生系统利益相关者的指导,并确定评价卫生系统指导质量的方法是另一个挑战;⑤改编现有方法(如用于临床指南的那些方法)制定有意义的建议来应对卫生系统、政策系统及背景的复杂性,尚需进一步研究。

关键词：卫生系统政策指导卫生干预最佳证据临床指南利益相关者 PLoS 制定过程

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：