Viabilidade da produção de leite a pasto para vacas de alto potencial leiteiro

O presente trabalho foi realizado na Granja VB, no município de Eldorado do Sul, RS, no verão de 2001, com o objetivo de determinar o consumo e a produção de animais de alto potencial em pastagens de qualidade e a relação custo/benefício do sistema de produção. Foram utilizadas 12 vacas da raça holandesa,multíparas, selecionadas pelo potencial produtivo (31,26 ± 3,3kg de leite/dia), peso vivo (PV) (576 ± 54,20kg) e dias de lactação (128 ± 46,5) e distribuídas aleatoriamente entre os dois tratamentos: T1 – animais mantidos sobpastagem consorciada de milheto (Pennisetum americanum (L.) Leeke) e feijão miúdo (Vigna unguiculata L.) sem suplementação; e T2 – Testemunha: mesmo tipo de pastagem com suplementação diária. A disponibilidade deforragem possibilitou um consumo médio de forragem de 3,13% do PV para o T1 e 4,25% para o T2. A produção média foi de 19,56 e 23,40kg de leite/vaca/dia, respectivamente, para o T1 e o T2, diferindo significativamente.Em relação ao ganho de peso houve variação positiva em ambos os tratamentos. Na análise econômica houve diferenças significativas no custo por litro de leite (R$0,19 e R$ 0,306), na margem líquida por litro de leite (R$0,31 e R$ 0,194) e na margem líquida por vaca (R$6,05 e R$ 4,54) para T1 e T2, respectivamente

Identification of Central Points in Road Networks using Betweenness Centrality Combined with Traffic Demand

Abstract-This paper aims to identify central points in road networks considering traffic demand. This is made with a variation of betweenness centrality. In this variation, the graph that corresponds to the road network is weighted according to the number of routes generated by the traffic demand. To test the proposed approach three networks have been created, which are Porto Alegre and Sioux Falls cities and a regular 10 × 10 grid. Then, trips were microscopically simulated and the results were compared with the proposed method

Comparative Analysis of the Chemical Composition, Antimicrobial and Antioxidant Activity of Essential Oils of Spices Used in the Food Industry in Brazil

There are many food-borne pathogens in the wild and they are considered the cause of serious public health problems in both developed and developing countries. The use of natural products, such as antimicrobial compounds, has been increasing, in an attempt to control bacteria present in foods, mainly pathogens resistant to conventional antibiotics. This chapter is intended to provide the antimicrobial and antioxidant activity of essential oils of Cinnamomum zeylanicum (cinnamon), Origanum vulgare (oregano), Zingiber officinale (ginger), Rosmarinus officinalis (rosemary), Citrus latifolia (tahiti lemon) and Curcuma longa (saffron) as well as to determinate its chemical composition. The oils had been extracted by hydrodistillation with a Clevenger type apparatus and the antimicrobial activity was performed against standard strains Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus. The antioxidant activity was carried out using the ABTS [2,2-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid)] method. The essential oils presented a mixture of mono- and sesquiterpenes. The best minimum inhibitory concentration was determined to C. zeylanicum against S. aureus. O. vulgare antioxidant activity presented inhibition of 90.74% and EC50 of 14 μg mL−1. These results demonstrate that the essential oils analyzed presented efficient antibacterial activity and antioxidant action being able to satisfy the demand of use as control of microorganisms in the food

Alternative Treatment for Leishmaniasis

Leishmaniasis remains as one of the most important neglected diseases in the world and, after all these years, its treatment is still a problem, mainly because of the side effects caused by the first- and second-line drugs and the indiscriminate treatment, which leads to increasing cases of parasite resistance. The search for alternative therapies for the treatment of leishmaniasis is extremely important. In this context, the use of natural products arises as a promising alternative, combining the empirical knowledge disseminated in the population with researches that aim to scientifically prove the therapeutic effects of plants. Based on this, the use of medicinal plants is considered a desirable and accessible tool in the treatment of these diseases and considered by pharmacognosy as a valuable source for the development of new drugs and as adjuvant for conventional therapies

Perfil clínico e diagnósticos de enfermagem de pacientes em risco para úlcera por pressão

This cross-sectional study characterizes patients at risk of Pressure Ulcers (PUs) and identifies their corresponding Nursing Diagnoses (NDs). The sample consisted of 219 hospitalizations of adult patients at risk for developing a PU established through the Braden Scale. Data concerning the results of the application of the Braden Scale were retrospectively collected from the patients medical files and statistically analyzed. Most patients were elderly women hospitalized for an average of nine days, affected by cancer, cerebrovascular, lung, cardiovascular and metabolic diseases. The most frequent NDs were Risk for infection, Self-care deficit syndrome, Bathing/hygiene self-care deficit, Impaired physical mobility, Imbalanced nutrition: less than body requirements, Ineffective breathing pattern, Impaired tissue integrity, Acute pain, Impaired urinary elimination, Impaired skin integrity, and Risk for impaired skin integrity. We conclude that most NDs are common in clinical nursing practice.Se trata de un estudio transversal con objetivos de caracterizar a los pacientes en riesgo de contraer úlcera por presión (UP) e identificar sus diagnósticos de enfermería (DEs). La muestra consistió de 219 hospitalizaciones de pacientes adultos en riesgo de contraer UP, determinado por la Escala de Braden. Los datos fueron recolectados retrospectivamente en registros de la Escala de Braden en ficha electrónica y, analizados estadísticamente. La mayoría de los pacientes fueron mujeres, ancianos, con tiempo de internación promedio de nueve días y portadores de enfermedades cerebrovasculares, pulmonares, cardiovasculares, metabólicas y neoplásicas. Los DEs más frecuentes fueron Riesgo de infección, Síndrome de déficit en el autocuidado, Déficit en el Autocuidado: baño/higiene, Movilidad física perjudicada; Nutrición desequilibrada: menos que las necesidades corporales, Estándar respiratorio ineficaz, Integridad tisular perjudicada, Dolor agudo, Alteración en la eliminación urinaria, Integridad de la piel perjudicada, Riesgo para perjuicio de la integridad de la piel. Se concluye que estos DEs, en la mayoría, son comunes a la práctica clínica de enfermería.Estudo transversal, cujos objetivos foram caracterizar os pacientes em risco para úlcera por pressão (UP) e identificar os seus diagnósticos de enfermagem (DEs). A amostra consistiu de 219 hospitalizações de pacientes adultos em risco para UP, determinado pela escala de Braden. Os dados foram coletados, retrospectivamente, em registros da escala de Braden e em prontuário eletrônico e, após, analisados estatisticamente. A maioria dos pacientes era de mulheres, idosos, com tempo de internação mediano de nove dias e portadores de doenças cerebrovasculares, pulmonares, cardiovasculares, metabólicas e neoplásicas. Os DEs mais frequentes foram risco para infecção, síndrome do déficit no autocuidado, déficit no autocuidado: banho/higiene, mobilidade física prejudicada, nutrição desequilibrada: menos do que as necessidades corporais, padrão respiratório ineficaz, integridade tissular prejudicada, dor aguda, alteração na eliminação urinária, integridade da pele prejudicada, risco para prejuízo da integridade da pele. Conclui-se que esses DEs, na maioria, são comuns à prática clínica de enfermagem

Ginger (<em>Zingiber officinale</em>) Antimicrobial Potential: A Review

Zingiber officinale Roscoe, commonly known as gengibre, ajengibre, jengibre dulce (Brazil, Argentina, and Spain), ginger (United States and England), and gingembre (France), is a perennial herbaceous plant that produces a fleshy and articulated rhizome, with rough brownish epidermis. As a medicinal plant, ginger is one of the oldest and most popular in the world. Several properties of the ginger have been verified in scientific experiments, with emphasis to the antimicrobial activity. Ginger essence oil has been investigated by several in vitro microbiological techniques, in which most of its essential oils presented antimicrobial activity against all selected bacteria. The antimicrobial effect is attributed mainly to several phytochemicals, such as camphene, phellandrene, zingiberene, and zingerone. This review provides an overview of the experimental evidence for the antimicrobial potential of Z. officinale

The Use of Plants’ Natural Products in Breast Cancer: Have We Already Found the New Anticancer Drug?

The importance of a new anticancer drug for breast cancer is well established. Natural compounds that can prevent this disease or be used as an adjuvant treatment associated with conventional drugs could be the solution for this. This chapter is an overview of agents extracted from plants with outstand results in the last six years. Green tea, berberine, thymoquinone and cannabidiol are compounds isolated from medicinal plants. These agents showed action through induction of apoptosis, down regulation of inflammation, epigenetics, hormonal modulation, among other. In vitro effect against cancer cells, in vivo experiments mainly with murine model and clinical trials reassured their efficacy against breast cancer. A protective effect against recurrence cases and chemosensitization to standard drugs was also successful. The use of nanotechnology provided a optimize delivery of these therapeutical molecules. Taken together this information led us to acknowledgement that we do probably have the natural agents for a future adjuvant treatment against breast cancer

1,4-disubstituted-1,2,3-triazole compounds induce ultrastructural alterations in leishmania amazonensis promastigote: An in vitro antileishmanial and in silico pharmacokinetic study

Funding Information: This research was funded by the Coordination for the Improvement of Higher Education Personnel (Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior do Brazil; CAPES) grant number Finance Code 001; and the Carlos Chagas Filho Foundation for Research Support of the State of Rio de Janeiro (Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro; FAPERJ) grant number E-26/010.001759/2019. The APC was funded by the Oswaldo Cruz Institute (Instituto Oswaldo Cruz; IOC). Dr. Fernando Almeida-Souza is a postdoctoral researcher fellow of CAPES grant number 88887.363006/2019-00. Dra. Ana Lucia Abreu-Silva is a research productivity fellow of National Scientific and Technological Development Council (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico; CNPq) grant number 309885/2017-5.The current standard treatment for leishmaniasis has remained the same for over 100 years, despite inducing several adverse effects and increasing cases of resistance. In this study we evaluated the in vitro antileishmanial activity of 1,4-disubstituted-1,2,3 triazole compounds and carried out in silico predictive study of their pharmacokinetic and toxicity properties. Ten compounds were analyzed, with compound 6 notably presenting IC50: 14.64 ± 4.392 µM against promastigotes, IC50: 17.78 ± 3.257 µM against intracellular amastigotes, CC50: 547.88 ± 3.256 µM against BALB/c peritoneal macrophages, and 30.81-fold selectivity for the parasite over the cells. It also resulted in a remarkable decrease in all the parameters of in vitro infection. Ultrastructural analysis revealed lipid corpuscles, a nucleus with discontinuity of the nuclear membrane, a change in nuclear chromatin, and kinetoplast swelling with breakdown of the mitochondrial cristae and electron-density loss induced by 1,4-disubstituted-1,2,3-triazole treatment. In addition, compound 6 enhanced 2.3-fold the nitrite levels in the Leishmania-stimulated macrophages. In silico pharmacokinetic prediction of compound 6 revealed that it is not recommended for topical formulation cutaneous leishmaniasis treatment, however the other properties exhibited results that were similar or even better than miltefosine, making it a good candidate for further in vivo studies against Leishmania parasites.publishersversionpublishe