cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.14276942.v1
title: Effects of zinc and selenium supplementation on broilers subjected to cyclic heat stress

description: Broilers raised under heat stress can have reduced antioxidant standard, however supplementation with zinc and selenium can mitigate this effect.In this study, we evaluated the effects of zinc and selenium supplementation, in the organic and inorganic forms, on performance, lipid peroxidation and carcass yield of broilers subjected to cyclic heat stress (HS). A total of 2400 one-day-old male chicks were raised in thermal comfort until the 14th day, then 1200 chicks were subjected to HS. The experiment was arranged in a completely randomized design in a 2 x 5 factorial with 2 environmental conditions [comfort (C) and HS] and 5 supplementation levels [S1) control diet; S2) S1 + 40 mg / kg of inorganic Zn; S3) S1 + 40 mg/kg of organic Zn; S4) S1 + 40 mg / kg of inorganic Zn and 0.2 mg / kg organic selenium and S5) S1 + 40 mg / kg of organic Zn and 0.2 mg / kg selenium organic], totalling 10 treatments with 8 replicates of 30 birds each. The variables evaluated were blood levels of thiobarbituric acid reactive substances (TBARS), cloacal temperature (CT), weight gain, feed intake, feed conversion, live weight and carcass yield and cuts. On the 35th and 42nddays, HS broilers showed increased cloacal temperature. Weight gain, feed conversion and eviscerated carcass were negatively influenced by heat. Environment and supplement levels did not affect breast meat yield with and without bone, drumstick, thigh, and wing. In the environmental and nutritional conditions of this study, there was no need for supplemental addition of organic and inorganic zinc and organic selenium.
DOI: 10.6084/m9.figshare.14276948
title: Antibacterial effect of sweet potato (Ipomoea batatas L.) leaf extracts against food bacteria and correlation with phenolic compounds

description: ABSTRACT Sweet potato (Ipomoea batatas L.) is a widely grown crop in tropical countries as food and feed, and a good source of energy, minerals and vitamins. It is a source of antioxidative polyphenols such as anthocyanins and phenolic acids. In this study, the concentrations of polyphenols, anthocyanins, and the antibacterial activity of alcoholic extracts, infusion and decoction of leaves of two accessions of sweet potato were evaluated against three agents of interest in food, which are standardized inocula of Salmonella Enteritidis (ATCC 11076), Staphylococcus aureus (ATCC 25923) and Escherichia coli (ATCC 11229), in Porto Alegre, RS. Evaluation of antibacterial activity, expressed as intensity of activity of bacterial inhibition (IINIB) and bacterial inactivation (IINAB), was based on tests of dilution in multiple tube system; anthocyanins were determined by differential pH and polyphenols by Folin & Ciocalteu. The alcoholic extracts inhibited and, or inactivated all inocula tested although Staphylococcus aureus were significantly more resistant. Decoction and infusion extracts, in addition to having very low concentrations of anthocyanins and lower polyphenol contents than their corresponding alcoholic extracts, showed no antibacterial activity. The antibacterial activity of the extracts tested was positively correlated to phenolic compounds and, or anthocyanins.
DOI: 10.6084/m9.figshare.14276935.v1
title: Socioeconomic benefits from the new technologies in the açaí cultivation in Pará State

description: ABSTRACT The objective of this study was to calculate the socio-economic benefits generated by the adoption of new technologies in the rational cultivation of açaí in the state of Pará, in the period 2001-2009. We used the results of açaí supply and demand equations estimated by Nogueira (2011) in order to get the price elasticities of supply and demand so as to assess the social and economic returns of adoption of new technologies on the açaí market economy in the state. Results showed that, from 2001 through the adoption of innovative technologies in the rational cultivation of fruit there was a substantial increase in the socioeconomic benefit to Pará population. That benefit reaching a level of R$25.763,79 mil, which represented an increase of 48.78% compared to the benefit obtained before the adoption of the technology, R$13.195,50 mil. Regarding the distribution of benefits, consumers have been the main beneficiaries with 71.86% of the total benefits.
DOI: 10.6084/m9.figshare.14276945.v1
title: Use of kriging techniques to estimate Conilon coffee productivity

description: ABSTRACT Knowing the spatial variability of a coffee-crop helps to understand some phenomena which can be correlated with its productivity. This study aimed estimating the productivity (kg ha-1) of conilon coffee-tree in three consecutive harvests using the cokriging method, considering the number of plagiotropic branches per plant as a covariable. In the center of a coffee-crop we settled a sampling grid with 109 georeferenced points, each point consisted of five plants. Subsequently the vegetative branches were counted for three consecutive growing seasons before performing manual harvesting of coffee beans. The harvested coffee was separated into cherry, yellowish and green and dried to a standard moisture of 12%. The dry cherry productivity (kg ha-1) was then evaluated. The three harvests evaluated showed linear correlation and spatial dependence among productivity and number of vegetative branches. Estimation of productivity by the number of vegetative branches showed similarities in cokriging, indicating that vegetative branches is an efficient covariable to estimate conilon coffee productivity.
DOI: 10.6084/m9.figshare.14276950
title: Genetic divergence for multivariate analysis of phenotypic characters of Anacardium humile (St. Hilaire)

description: ABSTRACT The specie Anacardium humile (St. Hilaire) is a native fruit of the Cerrado, traditionally used for either in natura consumption and the preparation of juices, sweets and jellies, but it is insufficiently explored under the economical viewpoints. Thirty eight genotypes of a population of this species were studied in an area of cerrado campo sujo with transition for cerrado campo rupestre at Patrocínio county, State of Minas Gerais-Brazil. The objective of this study was to evaluate either the phenotypic diversity estimated by multivariate analysis and the morphological characteristics that are promising for improvement programs and conservation. Thus, this study showed satisfactory genetic variability within the population studied, presenting the genotypes 6, 10, 24, 36 and 38 high production of fruits, weighed cashews apples and are genetically distant. As indicated in future breeding programs to be multiplied and used in commercial plantations and conservation of the specie.
DOI: 10.6084/m9.figshare.14276954
title: Gradual correction of phosphorus availability in the no-tillage system

description: ABSTRACT In areas cultivated under no-tillage system, the availability of phosphorus (P) can be raised by means of the gradual corrective fertilization, applying phosphorus into sowing furrows at doses higher than those required by the crops. The objective of this work was to establish the amount of P to be applied in soybean crop to increase content of P to pre-established values at the depth of 0.0 to 0.10 m. An experiment was carried out on a clayey Haplorthox soil with a randomized block experimental design distributed in split-split plot, with four replications. Two soybean crop systems (single or intercropped with Panicum maximum Jaca cv. Aruana) were evaluated in the plots. In addition, it was evaluated four P levels (0, 60, 120 and 180 kg ha-1 P2O5) applied in the first year in the split plots; and four P levels (0, 30, 60 and 90 kg ha-1 P2O5) applied in the two subsequent crops in the split-split plot. Contents of P were extracted by Mehlich-1 and Anion Exchange Resin methods from soil samples collected in the split-split plot. It was found that it is necessary to apply 19.4 or 11.1 kg ha-1 of P2O5, via triple superphosphate as source, to increase 1 mg dm-3 of P extracted by Mehlich-1 or Resin, respectively, in the 0.0 to 0.10 m layer of depth. The soil drain P character decreases as the amount of this nutrient supplied in the previous crops is increased.
DOI: 10.6084/m9.figshare.14276941.v1
title: Quality of Brazil nuts stored in forced aeration silos

description: ABSTRACT The traditional system of collection and storage of Brazil nut compromises seriously the quality of these almonds as it contributes to the high incidence of contaminants, like fungi of the genus Aspergillus, which can produce aflatoxins. In this study, the objective was to evaluate the influence of the storage period in studied conditions, on the physicochemical characteristics and on the microbiological contamination of Brazil nuts. The experimental was designed as completely randomized, considering as treatments the storage period (0 - control, 30, 60, 90, 120 and 150 days) with four replicates of 3 kg of Brazil nuts each. The samples were submitted to physicochemical and microbiological analysis. It was observed that almonds submitted to the storage had their moisture content reduced by 78.2% at 150 days of storage, however, this reduction was not fast enough to avoid surface contamination by filamentous and potentially aflatoxins producing fungi. The critical period of contamination occurred on the first 30 days of storage when there was an increase of the studied fungi, as well as B1 and total aflatoxin. The studied storage conditions were four times more effective in reducing the product moisture content than the traditional methods, however, pre-drying is necessary to avoid contamination of the product.
DOI: 10.6084/m9.figshare.14276948.v1
title: Antibacterial effect of sweet potato (Ipomoea batatas L.) leaf extracts against food bacteria and correlation with phenolic compounds

description: ABSTRACT Sweet potato (Ipomoea batatas L.) is a widely grown crop in tropical countries as food and feed, and a good source of energy, minerals and vitamins. It is a source of antioxidative polyphenols such as anthocyanins and phenolic acids. In this study, the concentrations of polyphenols, anthocyanins, and the antibacterial activity of alcoholic extracts, infusion and decoction of leaves of two accessions of sweet potato were evaluated against three agents of interest in food, which are standardized inocula of Salmonella Enteritidis (ATCC 11076), Staphylococcus aureus (ATCC 25923) and Escherichia coli (ATCC 11229), in Porto Alegre, RS. Evaluation of antibacterial activity, expressed as intensity of activity of bacterial inhibition (IINIB) and bacterial inactivation (IINAB), was based on tests of dilution in multiple tube system; anthocyanins were determined by differential pH and polyphenols by Folin & Ciocalteu. The alcoholic extracts inhibited and, or inactivated all inocula tested although Staphylococcus aureus were significantly more resistant. Decoction and infusion extracts, in addition to having very low concentrations of anthocyanins and lower polyphenol contents than their corresponding alcoholic extracts, showed no antibacterial activity. The antibacterial activity of the extracts tested was positively correlated to phenolic compounds and, or anthocyanins.
DOI: 10.6084/m9.figshare.14276953
title: Adaptability and stability of progenies of Jatropha curcas L. in different regions of Brazil

description: ABSTRACT Physic nut (Jatropha curcas L.) breeding programs have intensified in the past five years, locally selecting plants from various Brazilian regions. The objective of this study was to quantify the genotype x environment interaction of the physic nut grain production and the genetic progress obtained with the selection. From Half-sib progenies selected by Embrapa and EPAMIG, in 2008, three progeny trials were installed in the cities of Planaltina-DF, Nova Porteirinha-MG and Pelotas-RS, using a randomized block design with three replications of five plants per plot. Non-selected plant seeds and genetic material commercialized in Brazil were used as control. The genotype x environment interaction was significant for the J. curcas grain yield expression. We identified eight progenies of broad adaptability, three progenies of low adaptability, two progenies of specific adaptability to favorable environments and two progenies of specific adaptability to unfavorable environments of different Brazilian regions. Estimates of genetic progress indicate mass selection efficiency, with genetic gains of 28%, 76% and 177% in the Planaltina-DF, New Porteirinha-MG and Pelotas-RS, respectively. The genetic gains obtained by the centroid method were more balanced among environments, and therefore, preferable. The new means estimated with the cultivating of the selected progenies are: 2.34 ton.ha-1 in Planaltina-DF, 2.37 ton.ha-1 in Nova Porteirinha- MG and 2.09 ton.ha-1 in Pelotas-RS.
DOI: 10.6084/m9.figshare.14276950.v1
title: Genetic divergence for multivariate analysis of phenotypic characters of Anacardium humile (St. Hilaire)

description: ABSTRACT The specie Anacardium humile (St. Hilaire) is a native fruit of the Cerrado, traditionally used for either in natura consumption and the preparation of juices, sweets and jellies, but it is insufficiently explored under the economical viewpoints. Thirty eight genotypes of a population of this species were studied in an area of cerrado campo sujo with transition for cerrado campo rupestre at Patrocínio county, State of Minas Gerais-Brazil. The objective of this study was to evaluate either the phenotypic diversity estimated by multivariate analysis and the morphological characteristics that are promising for improvement programs and conservation. Thus, this study showed satisfactory genetic variability within the population studied, presenting the genotypes 6, 10, 24, 36 and 38 high production of fruits, weighed cashews apples and are genetically distant. As indicated in future breeding programs to be multiplied and used in commercial plantations and conservation of the specie.
DOI: 10.6084/m9.figshare.14276954.v1
title: Gradual correction of phosphorus availability in the no-tillage system

description: ABSTRACT In areas cultivated under no-tillage system, the availability of phosphorus (P) can be raised by means of the gradual corrective fertilization, applying phosphorus into sowing furrows at doses higher than those required by the crops. The objective of this work was to establish the amount of P to be applied in soybean crop to increase content of P to pre-established values at the depth of 0.0 to 0.10 m. An experiment was carried out on a clayey Haplorthox soil with a randomized block experimental design distributed in split-split plot, with four replications. Two soybean crop systems (single or intercropped with Panicum maximum Jaca cv. Aruana) were evaluated in the plots. In addition, it was evaluated four P levels (0, 60, 120 and 180 kg ha-1 P2O5) applied in the first year in the split plots; and four P levels (0, 30, 60 and 90 kg ha-1 P2O5) applied in the two subsequent crops in the split-split plot. Contents of P were extracted by Mehlich-1 and Anion Exchange Resin methods from soil samples collected in the split-split plot. It was found that it is necessary to apply 19.4 or 11.1 kg ha-1 of P2O5, via triple superphosphate as source, to increase 1 mg dm-3 of P extracted by Mehlich-1 or Resin, respectively, in the 0.0 to 0.10 m layer of depth. The soil drain P character decreases as the amount of this nutrient supplied in the previous crops is increased.
DOI: 10.6084/m9.figshare.14276955
title: AMMI methodology in soybean: Cluster analysis with bootstrap resampling in genetic divergence and stability

description: ABSTRACT This study aimed to propose a clustering methodology with bootstrap resampling using the Additive Main Effects and Multiplicative Interaction Analysis (AMMI) to contribute to better prediction of phenotypic stability of genotypes and environments. It also aims to analyze the genetic divergence in the assessment of soybean lines, identify genotypes with high-yielding characteristics, with control of chewing and sucking insect pests, and cluster similar genotypes for the traits evaluated. A total of 24 experiments were conducted in randomized blocks, with two replications subdivided in experimental groups with common controls. AMMI with principal component analysis indicated that PC1 and PC2 were significant, explaining 83.9% of the sum of squares of the interaction. The first singular axis of AMMI analysis captured the highest percentage of "pattern" and, with subsequent accumulation of the dimensions of the axes, there was a decrease in the percentage of "pattern" and an increase in "noise". The Euclidean distance between genotype scores was used as the dissimilarity measure and clusters were obtained by the hierarchical method of Ward. Genotypes 97-8011, 97-8029, 97-8050 and IAS-5 had the best performance and are promising for recommendation purposes, with the greatest stability and best performance on grain yield.
DOI: 10.6084/m9.figshare.14276956
title: Genotypic variation of agronomic traits as well as concentrations of Fe, Zn, P and phytate in soybean cultivars

description: ABSTRACT The staple diet of most of the world population is provided by cereal, which present levels of iron (Fe) and zinc (Zn) below the nutritional demand of humans. Other factors that may substantially interfere for the low intake of Fe and Zn are the anti- nutritional factors present in the edible parts of plants, such as heavy metals and phytate. Hence, the objective of this study was to evaluate the genotypic variation in terms of yield (kg ha-1), plant height, insertion height of first pod, as well as concentrations of Fe, Zn, phosphorus (P) and the anti-nutrient phytate in grains of 24 soybean cultivars and to identify cultivars with potential for biofortification. The field experiment was conducted in Rio Verde, state of Goiás by the technological center of COMIGO. The experimental design used in the study was a randomized block design with 24 treatments and three replications. The results showed that there is genotypic variation for grain yield (kg ha-1), plant height, and insertion height of first pod, as well as for the concentrations of Zn, Fe, P and concentration of anti-nutient phytate in grains among the soybean cultivars. Non-significant or low correlations were found among the evaluated parameters except for the relationship between P and phytate (r=0.733). The diversity found among soybean cultivars offers genotypes such as 8197RR, M 7908RR and BRS 262 with potential to develop cultivars with better ability to accumulate nutrients in grains.
DOI: 10.6084/m9.figshare.14276957
title: Quality of nectarines produced in the region of subtropical climate

description: ABSTRACT The fruits of nectarine trees usually have small, firm flesh, good aroma and flavor accented. Knowledge of available cultivars in relation to quality as well as its adaptation to local cultivation are extremely important as they allow the choice of materials with better market potential. Thus, the present study aimed to evaluate the nectarine cultivars 'Josefina' and 'Rubro- Sol' grown under subtropical conditions in Viçosa-MG. The experiments were carried out at the Universidade Federal de Viçosa for three seasons and conducted in split plots within the randomized design. Thirty fruits of each cultivar were harvested and the characteristics fruit weight, longitudinal and transverse diameters, firmness, soluble solids, titratable acidity and ascorbic acid contents and carotenoids were evaluated. There were significant differences between the means of years of avaliation as to the firmness and levels of ascorbic acid and carotenoids. The cultivar 'Rubro-sol' stood out for greater firmness and 'Josefina' by higher soluble solids and lower titratable acidity, with the sweetest fruits.
DOI: 10.6084/m9.figshare.14276960
title: Different propagules and auxin concentration on rooting of passionflower sandbank

description: ABSTRACT Passiflora mucronata Lam. is resistant to Fusarim oxysporum f. passifloraceae and therefore can be used as rootstock for the species Passiflora edulis Sims. f. flavicarpa. The rootstocks in this case can be vegetatively propagated through cuttings. The objective of this study was to evaluate the effect of different types of cuttings and different concentrations of indole-3-butyric acid (IBA) on the adventitious rooting of P. mucronata. The experiments were arranged in a completely randomized design with four replications of 16 cuttings each. In Experiment 1, the treatments consisted of the different types of cuttings from mother plants grown in protected environment: shoot tips; two leaves and two nodes; one leaf and one node; leafless with two nodes; leafless with one node. In Experiment 2, the cuttings were taken from field plants and treated with the following IBA concentrations: 0; 1000 mg kg-1 (0.0036456 mol L-1); 1500 mg kg-1 (0.0054684 mol L-1) and 2000 mg kg-1 (0.0072912 mol L-1). The characteristics evaluated in the experiments 1 and 2 were: survival (1 and 2); budding (1 and 2); shoot number (2), shoot length (2), number of shoot leaves (2);shoot dry mass (2); callusing (1); rooting (1 and 2); root number (1 and 2), largest root length (1 and 2), root volume (1 and 2), and root dry mass (1 and 2). We found that, instead the shoot tips, the cuttings of the type leafless with two nodes are the best for P. mucronata rooting. Neither the cuttings from greenhouse plants nor the cuttings from field plants require growth regulators for rooting of P. mucronata cuttings of the type leafless with two nodes.
DOI: 10.6084/m9.figshare.14276965
title: Gluten-free bread added with babassu ( Orbignya phalerata )mesocarp flour: physical, chemical and sensorial evaluation

description: ABSTRACT The acceptance of a gluten-free diet as in the case of celiac disease is not easy due to the food monotony, among others. On the other hand, the potential of use of babassu mesocarp flour (BMF) as human food is high. The present work evaluated the physical, chemical and sensorial properties of a gluten-free bread added of different percentages (F0 - control, F1 - 5% and F2 - 10%) of BMF. In the physical evaluation, the values of mass and diameter before and after baking, height, apparent volume, specific volume, expansion factor and heat factor were determined. The chemical evaluation was carried out in accordance with the official methods. In the sensorial evaluation, 50 untrained panelists of both sexes performed the affective sensory test of 9- point hedonic scale. Acceptability of samples was evaluated for the attributes general appearance, color, aroma, flavor and texture. The formulation F1 presented the best results, showing values of diameter before and after baking between F0 and F2 and the highest values of height, apparent volume, and specific volume. The BMF also improved the nutritional value of the breads, increasing the soluble fibers content and decreasing total carbohydrates. It still significantly increased the minerals content of F2. The pH of the samples was significantly different. However, the acid value of all formulations was acceptable. The sensory evaluation showed that the formulations added of BMF were well accepted by the panelists in all evaluated attributes. Therefore, the BMF showed to be a promising alternative for the development and enrichment of gluten-free breads.