Federal University of Grande Dourados

Dourados, Brazil
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Lima F.V.O.,Federal University of Grande Dourados | Silvestre R.,Federal University of Grande Dourados
Iheringia - Serie Zoologia | Year: 2017

In this paper a current list of the bee species from Mato Grosso do Sul State, Brazil is presented and available in the online database of collections and reported in the literature, besides own collections held in different localities in the state, encompassing different vegetation types. The total number of bee species recorded for Mato Grosso do Sul, including morphospecies, is 386 species, distributed in 107 genera and five subfamilies. The most diverse subfamily is Apinae, followed by Megachilinae, Halictinae, Colletinae and Andreninae. We added new distribution records of 97 species of bees to Mato Grosso do Sul. © 2017, Fundacao Zoobotanica do Rio Grande do Sul. All rights reserved.

Burin P.C.,Federal University of Grande Dourados
Revista Electronica de Veterinaria | Year: 2016

It is of great importance the study of the lipid intake by ruminants and the consequences of different levels in the diet, as this influences the quality of widely consumed products such as meat and milk. The manipulation of rumen is possible by offering diets with different levels and carbohydrate ratios, lipids and proteins in order to change the fatty acid composition of meat and milk. This change can lead to changes in conjugated linoleic acid (CLA), which has shown very positive results on human health in recent research. Sheep compared to other ruminants produce meat and milk with a high composition of conjugated linoleic acid, generally the deposition and composition of fat of these animals is greatly influencing factors such as sex, diet, race and breeding system. Factors that must be handled carefully so as not to interfere negatively on the quality of final products of greatest interest in meat and milk. In this sense the objective of this review is to discuss about what factors affect and how they are related to metabolism, deposition and sheep fat quality and how this can be related to food supply to meet the demand of consumers increasingly concerned about the health.

Burin P.C.,Federal University of Grande Dourados
Revista Electronica de Veterinaria | Year: 2016

The Production System Brazilian offer cutting sheep production scale greater basically three categories, lambs, castrated lambs and sheep. Since the production chain is characteristic difficulties in its structure and operation. In production systems, which excel by meat production standardization is essential and good yield of carcasses and meat cuts , which are well finished with good proportion of bone, muscle and fat. The case of sheep meat, another important requirement directly related to the consumer market is the demand for lean and tender meat from younger animals that fall into the category lambs. Thus should seek strategies and tools to learn and thus improve the performance of animals from production to slaughter, in order to maximize the production of carcasses and meat that meet consumers. Among these tools can mention the management of nutrition, the study and evaluation of carcasses as regards the qualitative and quantitative aspects and the main factors that directly influence these traits in animals and in the final product, points that will be discussed throughout this literature review.

Evaluation of fuel consumption in internal combustion engines (ICE) of agricultural machinery and equipment is important in determining the performance under various operating conditions, especially when using biofuels. This study consisted of experimental evaluation of the gasoline (petrol)/ethanol consumption in a two-stroke 1-cylinder ICE, Otto cycle, functioning as an air blower for agriculture and related applications. A methodology for tests of non-automotive ICE, based on ABNT/NBR technical standards, was considered. The presented results refer to operation with commercial and non-commercial fuel blends. Characteristic curves for the tested equipment are presented, identifying consumption conditions and trend in the whole operating range of angular speeds (RPM), for five fuel blends (gasoline/ethanol). For the operating conditions of minimum and maximum angular speeds, 20 and 30% ethanol blends had the highest and lowest fuel consumptions, respectively. © 2017, Departamento de Engenharia Agricola - UFCG/Cnpq. All rights reserved.

Menegazzo M.L.,Federal University of Grande Dourados | Petenuci M.E.,Federal University of Grande Dourados | Fonseca G.G.,Federal University of Grande Dourados
Food Chemistry | Year: 2014

In this study, crude oil was extracted by heating and filtering of the residual fat obtained from the processing of mechanically separated meats of Nile tilapia (Oreochromis niloticus) and hybrid sorubim (Pseudoplatystoma corruscans × P. fasciatum) for protein concentrate obtaining. The crude oil was refined by the following steps: degumming with 85% phosphoric acid, neutralization with 20% NaOH, washing with hot water at 85 C, drying at 90 C, clarification with activated charcoal and filtration with diatomaceous earth and anhydrous sodium sulfate. The quality of crude and refined oils was verified by acidity, peroxide, iodine, refractive, and saponification indexes, beyond moisture, lipid and free fatty acids contents, and density. The results show that the refining reduced the acidity index of the crude oil, however, favored the oil oxidation, as demonstrated by the increase in peroxide index. In most of the cases there was no change in the identity of the fish oils. © 2014 Elsevier Ltd. All rights reserved.

The aim of this paper is to present aspects about the energy balance of sugarcane crops and its carbon dioxide emissions. We calculate energy used in agricultural, industrial and distribution sectors by five sugarcane mills of Mato Grosso do Sul and we compare the yield with its energy delivery. The energy balance obtained, with an average 6.8, shows that is advantageous to produce ethanol in the lands of that Brazilian state. We have prepared a forecasting of electricity production from bagasse taking into account two types of technology. Finally, we present the potential value of CO2 emitted by the five mills to evaluate greenhouse gas emissions of the ethanol production valor chain. © 2012 Elsevier Ltd.

Neves E.F.,Federal University of Grande Dourados
Genetics and molecular research : GMR | Year: 2012

One of the most important attributes that allowed the evolution and maintenance of sociality in insects is their ability to distinguish members of their own colonies. The capacity for individual recognition in social insects is mediated by chemical signals that are acquired soon after the adult emerges, and vary according to the tasks performed by individuals in their colonies. We determined the time when adults of the wasp Mischocyttarus consimilis acquire the chemical signature of their colonies, as well as the variation in the cuticular hydrocarbon profiles of the exoskeleton of individuals, according to their functions in the colony. The method used was Fourier transform infrared photoacoustic spectroscopy directly on the gaster of each individual. Young wasps take three to four days to acquire the colony's chemical signature, with a small change on the fifth day, when the cuticular hydrocarbon profile of the workers is more similar to that of the queens than that of the males, probably because they are of the same sex, but primarily because of the similarity of tasks executed by these two groups of females in the colonies.

Sanjinez-Argandona E.J.,Federal University of Grande Dourados | Chuba C.A.M.,Federal University of Grande Dourados
Revista Brasileira de Fruticultura | Year: 2011

Fruits of the Bocaiuva palm - Acrocomia aculeata (Jacq.) Lodd. ex Mart. - collected at Dourados (MS) and Presidente Epitácio (SP), were analyzed in relation to the biometric characteristics chemical composition and physical characteristics, in order to evaluate the food potential. The Bocaiuva fruits showed no significant differences in the biometric characteristics. The average yield of pulp was 42% compared to the whole fruit, higher than found in the literature for other fruits of palm trees. The physical and chemical characteristics of the fruit pulps from MS and SP regions showed that the pulp was little acid (pH 5.70 to 6.29). Samples from Dourados were sweeter (14.53% of total reducing sugars) and had higher content of vitamin C (34.57 mg.100g -1) than samples from Presidente Epitácio (11.46 mg.100g -1). However, the intensity of the yellow-orange was higher in the pulp from Presidente Epitácio indicating higher content of carotenoids in the later.

Caires A.R.L.,Federal University of Grande Dourados | Lima V.S.,Federal University of Grande Dourados | Oliveira S.L.,Federal University of Mato Grosso do Sul
Renewable Energy | Year: 2012

In a recent paper published by our group (M.D. Scherer et al. J. Fluoresc. 21 (2011) 1027-1031), we showed that fluorescence spectroscopy has a potential to be used to determine the biodiesel content in the diesel/biodiesel blends. However, this method presents some challenges that must be overcome to be successfully applied. For instance, the method must work with biodiesel produced from different vegetable oils and fats. In the present study, we evaluated the ability of fluorescence spectroscopy to quantify the biodiesel concentration in diesel/biodiesel blends prepared from different feedstocks. Four different blends prepared using biodiesel produced from four refined vegetable oils (canola, sunflower, corn, and soybean) were used in the present investigation. For all samples, the fluorescence spectra were collected between 300 and 800 nm when excited at 260 nm. Our results revealed that the four blends presented a similar emission profile with a maximum at 470 nm. Furthermore, the same fluorescence behavior (emission intensity as a function of biodiesel content) was observed for all blends. Therefore, the results showed that fluorescence-based method for quantifying the biodiesel content in the diesel/biodiesel blends is independent of the refined vegetable oil used in the biodiesel production. © 2012 Elsevier Ltd.

De Souza A.C.C.,Federal University of Grande Dourados | Silveira J.L.,São Paulo State University
Renewable and Sustainable Energy Reviews | Year: 2011

Various reports concerning catalytic reaction of glycerol for hydrogen production is available. However, economic analyses of this activity are not found yet. The objective of this work is to evaluate the process of hydrogen production via steam reforming of glycerol obtained through transesterification process of bio-oils. The thermochemical process of steam reforming process was determined due to high efficiency, feasibility and lower cost of design, development, operation and maintenance. These bio-oils come from feedstocks largely encountered in Brazil such as soybean, palm, castor bean, peanut and cotton seed as also come from residues such as defective coffee, tallow beef, wastewater (scum) and others. Various findings were obtained such as potential of production of glycerol utilizing residues (considering available amounts in the Brazilian states) and some vegetable feedstocks (considering production of harvested feedstock per hectare). Subsequently, production of hydrogen via steam reforming of generated glycerol, and foreseen electricity production via fuel cells were also determined. An additional estimation was paid for production of H-BIO, an innovative fuel developed by PETROBRAS (Petróleo Brasileiro S.A.), where hydrogen and bio-fuel are utilized and generates propane as co-product. About this work, it was concluded that high amounts of hydrogen and electricity could be produced considering an enormous potential from each cited feedstock being an attractive alternative as distributed electricity source and as an additional source for some activities, inclusively those that produce their own feedstocks such as abattoirs (beef tallow), and wastewater treatment plants. © 2010 Elsevier Ltd. All rights reserved.

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