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Sward Structural Characteristics and Performance of Beef Heifers Reared under Rotational Grazing Management on Campos Grassland

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American Journal of Plant Sciences 2014年第7期5卷 1020-1029页

作者： Cezar Wancura Barbieri Fernando Luiz F. de Quadros felipe Jochims émerson Mendes Soares Leandro Bittencourt de Oliveira Régis Maximiliano R. Carvalho Gabriela Machado Dutra felipe xavier de lima Franciele Gusatto Natural Grassland Ecology Research Group (LEPAN-UFSM) Universidade Federal de Santa Maria Animal Science Department Santa Maria Brazil

This study aimed to evaluate the effect of two rest intervals on structural sward characteristics and productive performance of beef heifers reared on Campos grassland managed on rotational grazing. The treatments were two intervals between grazing of 375 and 750 DD (degree days), based on thermal cumulative sum for leaf expansion of native grasses belonging to two functional groups. The experimental design was a randomized complete block design with two treatments and three replications. The tested animals were beef heifers with initial age of 12 months and average weight of 185.2 ± 17.4 kg. Measures in the pasture were: herbage mass, mass of green leaf blades, stem mass, dead material mass and green leaf allowance. The 750 DD rest interval presented higher herbage mass (24%), higher green herbage mass and 19% more leaves in the canopy. This rest interval also presents a high proportion of dead material and stems in the sward structure. In the other way, the 375 DD rest interval presents better chemical characteristics, with 20% more crude protein in the hand plucking samples. Heifers’ dry matter intake was similar between the rest intervals (2.04% of live weight) and the bite mass was also similar (0.22 g DM per bite) but the animal performance was higher in the 375 DD rest interval. The stocking density showed similarity between treatments with an average of 875 kg/LW/ha. The live weight gain per area was higher in 40 kg/LW/ha (P = 0.117) for 375 DD rest interval, reaching 251 kg/LW/ha produced over the 149 experimental days. Based on these results, we can conclude that the treatment of shortest interval between defoliation gave the highest gain individual animals in warm seasons.

关键词： Average Daily Gain Duration of Leaf Expansion Herbage Mass Rotational Grazing Stocking Rate

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Seasonal variation and host sex affect bat–bat fly interaction networks in the Amazonian savannahs

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Integrative Zoology 2024年第3期19卷 400-416页

作者： Paulo MEJIA Gustavo lima URBIETA Bruna da Silva xavier IsaíJorge de CASTRO JoséJúlio de TOLEDO Gustavo GRACIOLLI Lucio AndréVIANA DIAS William Douglas CARVALHO Programa de Pós-Graduação em Biodiversidade Tropical Universidade Federal do Amapá(UNIFAP)MacapáAPBrazil Programa de Pós-Graduação em Ecologia Instituto de BiologiaCentro de Ciências da SaúdeUniversidade Federal do Rio de Janeiro(UFRJ)Rio de JaneiroRJBrazil Laboratório de Mamíferos Instituto de Pesquisas Científicas e Tecnológicas do Estado do Amapá(IEPA)MacapáAPBrazil Programa de Pós-Graduação em Biologia Animal Laboratório de SistemáticaEcologia e Evolução(LSEE)Instituto de BiociênciasUniversidade Federal de Mato Grosso do Sul(UFMS)Campo GrandeMTBrazil Terrestrial Ecology Group(TEG-UAM) Departamento de EcologíaFacultad de CienciasUniversidad Autónoma de MadridMadridSpain Centro de Investigación en Biodiversidad y Cambio Global(CIBC-UAM) Universidad Autónoma de MadridMadridSpain

Bats are the second-most diverse group of mammals in the world,and bat flies are their main ***,significant knowledge gaps remain regarding these antagonistic interactions,especially since diverse factors such as seasonality and host sex can affect their network ***,we explore the influence of such factors by comparing species richness and composition of bat flies on host bats,as well as specialization and modularity of bat–bat fly interaction networks between seasons and adult host *** captured bats and collected their ectoparasitic flies at 10 sampling sites in the savannahs of AmapáState,northeastern region of the Brazilian *** female bats being more parasitized and recording greater bat fly species richness in the wet season,neither relationship was statistically *** pooled network could be divided into 15 compartments with 54 links,and all subnetworks comprised>12 *** total number of links ranged from 27 to 48(for the dry and wet seasons,respectively),and female and male subnetworks had 44 and 41 links,*** values were very low for the pooled network and for all *** results revealed higher bat fly species richness and abundance in the wet season,whereas specialization and modularity were higher in the dry ***,the subnetwork for female bats displayed higher specialization and modularity than the male ***,both seasonality and host sex contribute in different ways to bat–bat fly network *** studies should consider these factors when evaluating bat–bat fly interaction networks.

关键词： Amapá Amazon biome bat flies bats interaction networks

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Sagittal abdominal diameter as a marker of visceral obesity in older primary care patients

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Journal of Geriatric Cardiology 2020年第5期17卷 279-283页

作者： Maria Auxiliadora Nogueira Saad Antonio José Lagoeiro Jorge Diane xavier deávila Wolney de Andrade Martins Márcia Maria Sales dos Santos Luciana Thurler Tedeschi Ismar lima Cavalcanti Maria Luiza Garcia Rosa Rubens Antunes da Cruz Filho Fluminense Federal University NiteróiRio de Janeiro StateBrazil

Background Longevity,combined with a higher prevalence of obesity,particularly visceral obesity,has been associated with an increased risk of cardiovascular *** resistance(IR)is an important link between visceral obesity and cardiovascular *** important association has been found between sagittal abdominal diameter,visceral obesity and *** objective of this study is to evaluate sagittal abdominal diameter as a marker of visceral obesity and correlate it with IR in older primary health care *** A cross-sectional study was performed with 389 patients over 60 years of age(70.6±6.9),of whom 74%were *** clinical,anthropometric and metabolic profiles were assessed and their fasting serum insulin level was used to calculate the homeostasis model assessment insulin resistance(HOMA-IR).Sagittal abdominal diameter was measured in the supine position at the midpoint between the iliac crest and the last rib with abdominal *** Sagittal abdominal diameter was significantly correlated with anthropometric measures of general and visceral obesity and with HOMA-IR in both *** was no change in the association between sagittal abdominal diameter and HOMA-IR after adjusting for age,sex,diabetes and *** It is feasible to use sagittal abdominal diameter in older primary care patients as a tool to evaluate visceral obesity,which is an indicator of cardiovascular risk.

关键词： Cardiovascular risk Insulin resistance Primary health care Sagittal abdominal diameter

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determination of PAHs in Surface Waters from the Doce and Piracicaba Rivers in Brazil

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Journal of Water Resource and Protection 2015年第5期7卷 422-429页

作者： Aniel da Costa lima Fernanda Fernandes Heleno Robson José de Cássia Franco Afonso Mauricio xavier Coutrim Federal Center of Technological Education of Minas Gerais Curvelo Brazil department of Agricultural Engineering Federal University of Vicosa Vicosa Brazil Chemistry departament Federal University of Ouro Preto Ouro Preto Brazil

Sixteen polycyclic aromatic hydrocarbons were determined in water samples from the Piracicaba River and the Doce River in the municipality of Ipatinga, Minas Gerais State, Brazil. The polycyclic aromatic hydrocarbons were extracted by solid-phase extraction and were analyzed by high-performance liquid chromatographic with diode-array detector. The limit of detection was as low as 1.3 ng·L-1. All polycyclic aromatic hydrocarbons were found above the limit of quantification in water from at least four of the eight sampling points. Benzo[a]pyrene and chrysene were found at concentrations up to 80% above the limit set by Brazilian and European environmental legislation (0.05 μg·L-1). The isomer ratios of the compounds indicated that crude oil and combustion processes were the main sources of the polycyclic aromatic hydrocarbons.

关键词： Monitoring Polycyclic Aromatic Hydrocarbons Water Quality

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Changes of Estuarine Sedimentation Patterns by Urban Expansion: The Case of Middle Capibaribe Estuary, Northeastern Brazil

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International Journal of Geosciences 2017年第4期8卷 514-535页

作者： Roberto lima Barcellos Rubens César Lopes Figueira Elvis Joacir Franç a Carlos Augusto Schettini Diego de Arruda xavier departament of Oceanography Federal University of Pernambuco Recife Brazil Oceanographic Institute Universityof S&atilde o Paulo S&atilde o Paulo Brazil departament of Environmental Analysis Regional Center Nuclear Science of Northeast Rio de Janeiro Brazil

The aim of this study is to describe the sedimentary evolution occurred during the last 200-years in the middle Capibaribe Estuary by mean of the sedimentary analysis (magnetic susceptibility, grain size, calcium carbonate, total organic matter—TOM) and geochemical parameters (sedimentation rates, heavy metal concentrations, enrichment and contamination factor) along a core. The core recorded four units and the measured sedimentation rate was 0.52 cm cm·y﹣1. The first unit, dating before 1812, showed environmental characteristics of mangrove with predominance of fine sediments, high total organic matter percentages and heavy metal concentrations probably from natural sources. The second unit, from 1812 to 1937, showed a slight increase in sand percentages and decrease in fine fraction, TOM contents and heavy metals concentrations. These characteristics may be associated with the urban expansion processes and the presence of monoculture of sugar cane occurred in the middle Capibaribe Estuary. The third unit, from 1937 to 2004, showed the highest sand percentages of the core, characterizing a unit exclusively of sand with low fine fractions percentages, total organic matter contents and heavy metals concentrations. This unit represented the intensification of the urban processes expansion of Recife City. The fourth unit showed increases in fine fraction sedimentation, TOM contents and heavy metals concentrations. This new change in sedimentation probably is consequence of rebirth of marginal estuarine banks by mangrove vegetation, due to environmental projects carried out by Recife Prefecture in the early 2000’s. It was not possible to register the anthropic contamination to middle estuary area probably due to the Barreiras Formation influences in the metal concentration records, masking the anthropic contamination inputs in estuarine region. Although, lead and arsenic showing an enrichment level indicating anthropic contamination.

关键词： Sedimentary Evolution Grain Size Heavy Metals Sedimentation Rate

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Electrochemical Evaluation of Aminoguanidine Hydrazone derivative with Potential Anticancer Activity:Studies of Glassy Carbon/CNT and Gold Electrodes Both Modified with PAMAM

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Journal of Biomaterials and Nanobiotechnology 2020年第1期11卷 33-48页

作者： Marilya Palmeira Galdino da Silva Ygor Mendes de Oliveira Anna Caroline lima Candido Joao xavier de Araujo-Junior Erica Erlanny da Silva Rodrigues Kadja Luana Chagas Monteiro Thiago Mendonca de Aquino Fabiane Caxico de Abreu Institute of Chemistry and Biotechnology Federal University of AlagoasMaceioALBrazil Institute of Pharmaceutical Sciences Federal University of AlagoasMaceioALBrazil

Aminoguanidine hydrazones (AGHs) are a class of compounds that have interesting pharmacological activities. They are derived from the same chemical group as aminoguanidine, so it has mixed properties (receptor and donor) in the formation of hydrogen bonds. Its anticancer agent properties were recently highlighted, but the molecules of this class have solubility in aqueous solutions that can be considered low. The identification of this class, by a simple, sensitive and low-cost technique, such as electrochemistry, which also allows the evaluation of its solubilization process through agents such as PAMAM dendrimer is the main objective of the work described here. The electrochemical response of the LQM10 (AGH derivative) was evaluated, as well as its behavior in different electrochemical sensors. Electrochemical experiments were performed in buffered (phosphate at pH 7.02 and acetate at 4.5). LQM10 has a reversible oxidation peak with a potential of +0.22 V. It was efficiently detected in different electrodes tested (glass carbon/CNT, glass carbon/CNT/PAMAM), which proves the viability of the electrodes for various analyses and has the determination of the apparent constant association, indicating its interaction with the analysis that is higher in the presence of the PAMAM encapsulating agent. This was corroborated by the results for the modified gold electrode with MUA and PAMAM. The sum of the results shows the possibility of electrochemically evaluating the Aminoguanidine hydrazone derivative, the viability of electrodes employed and the greater solubilization of LQM10 in the presence of the PAMAM dendrimer.

关键词： Drug delivery Aminoguanidine Hydrazone Modified Electrode PAMAM

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Three Different Doses of Intrathecal Morphine as Part of a Multimodal Regimen for Post-Cesarean delivery Analgesia: A Randomized Double-Blinded Trial

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Open Journal of Obstetrics and Gynecology 2018年第9期8卷 780-789页

作者： Marcio Luiz Benevides Rubens Jardim Nochi Jr. Carlos Eduardo Solcia Valter Moreira xavier Júnior Adalberto Francisco Buss lima department of Anesthesiology Hospital Geral Universitário Cuiabá Brazil

Brazil is one of the countries that carry out cesarean delivery in the world. The pain after cesarean delivery (CD) is one of the main concerns of parturient. Intrathecal Morphine (ITM) is widely used for the treatment of pain after CD;however, the optimal dose with minimal side effects is to be established. Objectives: To compare the analgesia and side effects resulted by three different doses of ITM as part of a multimodal regimen for post-cesarean delivery analgesia. Methods: One hundred ninety-four patients were sampled in this randomized, double-blinded, three-arm study (group 0.075: ITM 0.75 mg;group 0.1: ITM 0.1 mg and group 0.15: ITM 0.15 mg). All patients received intravenous dexamethasone, dipyrone and ketoprofen. The primary endpoint was pain intensity measured at rest and on movement, while the secondary endpoint was overall satisfaction with pain relief, the incidence of nausea and vomiting, intensity of pruritus, and the use of additional tramadol, antipruritic and antiemetic use within 24 hours after postoperation. Results: The three groups showed similar pain intensity at rest and on movement. The pain intensity on movement was significantly higher than at rest in the groups (p 0.001). There were no significant differences among the groups regarding secondary endpoint. Conclusions: Our findings suggest that in cases of an elective CD, 0.075 mg of ITM produces postoperative analgesia of similar quality that provided by 0.1 or 0.15 mg ITM. The patients should have a multimodal analgesia approach that includes: ITM, anti-inflammatory agents and access to additional systemic analgesic if necessary.

关键词： Spinal Anesthesia Cesarean delivery Intrathecal Morphine Postoperative Pain Multimodal Analgesia

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孕期母猫和新生幼猫的营养学综述

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畜牧产业 2022年第2期 56-61页

作者：张云阳(译) 米雁(译) Francisco Antonio Félix xavier Júnior Karen denise da Silva Macambira Steffi lima Araujo 亘泰集团上海吉宠(上海)国际贸易有限公司上海不详

猫营养学知识及其影响动物健康有关知识是兽医学的一大实际内容。由于日粮管理可防止许多器官系统的某些疾病的发展,并有助于治疗某些胃肠道疾病和其他疾病,因此人们在日粮管理领域的投资日益增多。因为猫的日粮会根据其生理阶段和营养... 详细信息

猫营养学知识及其影响动物健康有关知识是兽医学的一大实际内容。由于日粮管理可防止许多器官系统的某些疾病的发展,并有助于治疗某些胃肠道疾病和其他疾病,因此人们在日粮管理领域的投资日益增多。因为猫的日粮会根据其生理阶段和营养需求存在差异,因此猫营养界定很重要。众所周知,不同生理阶段的营养差异甚至比同一生理阶段不同物种的差异更明显。与犬相比,猫的营养管理方面有着很多不同之处。由于日粮中蛋白质和脂质的含量取决于必需维生素和矿物质含量,了解猫科动物的营养需求对于配制营养均衡、健康的日粮至关重要,从而可为动物提供更长的预期寿命和高质量生活。本研究旨在对家猫最重要的营养方面进行文献综述,重点介绍在其不同生理阶段对日粮进行妥善管理的需求。

关键词：小动物营养猫新生幼崽

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Can the Ucides cordatus Fishing and the Crassostrea gasar Creation on the Amazon Coast Make up the Curriculum of Rural Schools

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Journal of Fisheries Science 2021年第1期3卷 37-46页

作者： Ivaney dos Santos Cardoso Elaine Vasconcelos Bezerra Alves Leandro Lopes Rodrigues Ana Célia Barbosa Guedes LuãCaldas de Oliveira Manoel Luciano Aviz de Quadros Débora Tatyane Oliveira xavier Altevir Signor Fabricio Nilo lima da Silva Instituto Federal de Educação Ciência e Tecnologia do Pará(IFPA)Campus Avançado VigiaRodovia PA-140Km 55próximo ao trevo de São CaetanoVigiaPará68.780-000Brasil Universidade da Amazônia(UNAMA) Campus Alcindo Cacela.Avenida Alcindo Cacela287-UmarizalBelémPará66060-000Brasil Instituto Federal de Educação Ciência e Tecnologia do Pará(IFPA)Campus Breves.Rua Antônio Fulgêncio da Silvas/n-Bairro:Parque UniversitárioBrevesPará68.800-000Brasil Faculdade Católica Paulista.Avenida Cristo Rei n 305 17515-200MaríliaSão PauloBrasil Universidade Estadual do Oeste do Paraná(UNIOESTE) Campus Toledo.Rua da Faculdade645-Jardim La Salle85903-000ToledoParanáBrasil

The fishing and ostreiculture activities practiced in the coast of the Eastern Amazon in the state of Pará,Brazil,became important to be inserted in rural ***,this literature review aimed to realize a brief theoretical discussion about the important aspects of rural education in promoting the development of fishing and *** the accomplishment of the literary research it was sought to explain the definition in education;rural education and valorization of the rural environment;environmental education as a transversal theme;fishing and aquaculture as a teaching strategy;considerations of fishing and ostreiculture;challenges and perspectives of the teaching of fishing and aquaculture in education;and booklet as a pedagogical tool in *** conclusion,the use of fishing and ostreiculture as a strategy for rural schools through environmental education is important to foster fishing activity in communities,as well as the sustainable use of natural resources.

关键词： Fishing resources Ostreiculture Environmental education Brazil

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Parasite Fauna of Lutjanus synagris Commercialized in the Fish Market from Bragança-PA,Brazil

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Journal of Zoological Research 2019年第3期1卷 1-4页

作者： Natalino da Costa Sousa Daiana Silva dos Santos Silmara Rosa Silva Alexandre Vaz da Silva Jucimauro de Araújo P.Junior João Vitor Antunes Miranda Pedro Rodrigo Nery de Souza Matheus Carvalho de Melo Fagner de Melo xavier Wellington lima da Silva Junior Fabricio Ramos Menezes Márcia Valeria Silva do Couto Federal University of Pará(UFPA) Campus BragançaAlameda Leandro RibeiroBragança68600-000PABrazil Federal University of Pará(UFPA) Campus Tucuruí-ParáBrazil Federal University of Sergipe(UFS) Departamento de Pesca e Aquicultura.Aracaju-SergipeBrazil Instituto Federal do Pará(IFPA) Campus de Cametá-ParáBrazil

Studies about the parasite fauna of marine fish highlights as an important problem for public health with zoonotic parasites or affecting the fish ***,this study evaluated the parasite fauna of Lutjanus synagris commercialized in the fish market from Braganç*** laboratory,58 fish were measured,weighted and conducted to parasitological analysis to determine parasitological indexes and relative *** parasite was fixed and identified until to the lowest taxonomic *** the parasitological analysis,it found Cymothoidae,Digenea,Cucullanus *** Procamallanus(Spirocamallanus)sp.,with total prevalence 67.24%.Digenea showed the highest prevalence and mean intensity *** nematode,Cucullanus *** the greater prevalence and relative dominance,while Procamallanus(Spirocamallanus)*** the greater mean intensity and *** showed the lowest prevalence and mean intensity *** conclusion,the parasite fauna of *** has been noted with low diversity,reporting the nematode occurrence Procamallanus(Spirocamallanus).

关键词： Cymothoidae Parasite Marine fish

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