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Publications
Publications (78)
Soils in areas under grazing undergo physical changes, of greater or lower intensity, by the action of animal trampling. Thus, the objective of this study was to evaluate the spatial dependence of the physical attributes and associated soil functionalities under trampling by cattle on rotational grazing in the region of Pernambuco, Brazil. The rese...
This study evaluated the environmental conditions in different land occupation types in an urbanized rural area, compared their microclimates, and described their characteristics using a computational algorithm that assigned an environmental quality class for each area. The experiment was carried out in the city of Dourados-MS, Brazil, at the Feder...
The objective of this research was to identify the influence of the evaporative adiabatic cooling system (EACS) on the thermal comfort and productive responses of dairy cattle, through multivariate analysis by principal components (PC), in the summer and winter seasons of the semiarid region of Pernambuco, Brazil. The data came from an experiment t...
The existing water scarcity in the Brazilian semiarid region, associated with anthropic activities, imply in the degradation of the watersheds present in the Caatinga. Therefore, the objective of this study was to characterize water and vegetation cover changes in the Ipanema River Watershed (IRW). IRW is inserted in municipalities that make up the...
The objective of this research is to apply exploratory analysis and modeling associated with abiotic factors, physiological and behavioral variables of swine in the semi-arid region. The experimental design used was completely randomized, in a 3 × 3 factorial scheme, randomly distributed in nine pens, with three animals. The behavior of the animals...
This paper explores the potential of infrared thermography and geostatistics in animal production and presents the results of the application of the combination of these techniques, contributing significantly to efforts to obtain animals’ responses to the environments in which they are located and thereby ensuring improvements in productivity and a...
The objective was to establish a model for the prediction and characterization of vaginal temperature in Holstein cows, based on environmental predictors and thermal comfort indices, through cluster analysis, validation by the cophenetic correlation coefficient, and multiple regression analysis. The micrometeorological characterization of the site...
Brazil is one of the largest vegetable producers, which contributes to the creation of jobs for small and medium-sized producers, with emphasis on family farming. The objective of this work was to evaluate the cherry tomato and chili pepper seedlings development adopting the agroindustrial by-product filter cake enriched with rock dust. Two experim...
Changes in land use and land cover in the Brazilian semiarid region have intensified, due to climate change and anthropic activities, amplifying land degradation and the desertification process. In this scenario, the objective of this study is to evaluate the spatio-temporality of the conditions of loss and gain of land use and land cover in the Br...
The spatiotemporal diagnosis of climate variability and environmental changes in arid and semiarid regions is essential to minimize pressures and impacts on natural ecosystems. Remote sensing techniques and satellite images allow the detection of such changes. The study evaluated spatio-temporally the processes of environmental degradation of veget...
Cherry tomato is one of the most cultivated crops in greenhouse, due to its morphological and organoleptic characteristics. Thus, the objective was to evaluate the morphometric and productive characteristics and the total soluble solids content of the cherry tomato crop, submitted to irrigation depths. The experiment was carried out in a greenhouse...
The coronavirus pandemic has seriously affected human health, although some improvements on environmental indexes have temporarily occurred, due to changes on socio-cultural and economic standards. The objective of this study was to evaluate the impacts of the coronavirus and the influence of the lockdown associated with rainfall on the water quali...
Este artigo apresenta o desenvolvimento de um sistema embarcado capaz de aferir dados de temperatura e umidade relativa através do sensor DHT-22 e calcular índices de conforto térmico, auxiliando na tomada de decisão. O índice de conforto considerado nessa aplicação foi o ITU (índice de temperatura e umidade). Para validar os resultados de captura...
Effective planning animal transport is essential to safeguard animal welfare and reduce production losses. Environmental conditions, specifically extreme temperatures in combination with ranges of relative humidity are highlighted as one of the main risk factors for production losses during transport (e.g., fatalities). The majority of research eva...
The impermeabilization of the soil by concrete and asphalt, resulting from the urbanization process, has caused the loss of natural vegetation. These modifications have contributed to the increase in the emission of greenhouse gases (GHGs), in particular carbon dioxide (CO2). Although it is still portrayed today, it is not new that the global conce...
This study evaluated the influence of three plant species and two periods on the amount of carbon stored in the substrate in an extensive green roof. The study was carried out in March and September 2020 at Charles Darwin Business Garage Building, Recife, Pernambuco state, Brazil. A completely randomized design with a split-plot scheme was adopted,...
The aim of the study was i) to determine the spatial variability of the skin temperature of dairy cows in a compost system and ii) to evaluate the thermal comfort conditions of confined animals. Skin temperature (Tskin,°C) was recorded in three animals at 9:00 am (morning) and the measurement was repeated at 3:00 pm (afternoon) using a thermographi...
The characterization of land use and land cover (LULC), as well as the identification of its degradation factors, are necessary for the preservation of the agroecosystem and help in decision making. Therefore, the objective of this research was to evaluate the spatial-temporal dynamics of vegetation cover and soil degradation in the Agreste mesoreg...
O experimento foi conduzido no Setor de Suínos da UFRPE/UAST. Foram utilizados 27 suínos, machos castrados e fêmeas, oriundos de matrizes Pietrain-Duroc, na fase de terminação (71 a 90 kg). O delineamento experimental foi inteiramente casualizado, em arranjo fatorial 3 x 3, cujos 27 animais foram distribuídos aleatoriamente em nove baias com três s...
The objective is to characterize the hydrochemical and qualitative composition of the groundwater of the Beberibe aquifer located in the Northeast of Brazil (NEB) using geostatistical, geoprocessing, and multivariate analysis techniques. The Beberibe aquifer is located in the state of Pernambuco (PE), NEB, and is responsible for supplying water to...
Livestock is responsible for much of the world's land use, and grazing areas are the main livelihood of the world's largest commercial herd. Most of the pasture areas have low productivity because they are at some level of degradation. This study aimed to apply multivariate analysis and remote sensing techniques for to evaluate the influence of soi...
The objective of this study was to evaluate the response of biological activity measured by the Biospeckle Laser technique applied to mangoes (Mangifera indica L.) subjected to mechanical damage at different stages of maturation. The tests were carried out twice a week for twenty-one days, and 40 mangoes of the variety Tommy Atkins were used. The p...
The objective of this research was to use image analysis techniques to extract characteristics of interest and to establish a model of animal thermal comfort, based on the classification of thermal images of 7/8 Holstein-Gir heifers, through geostatistics and multivariate analysis. The thermal images were recorded by an infrared thermographic camer...
This study evaluates the dynamics of heat zones in the load and its relationship with the stress of pigs during transport. Four journeys of 170 km were monitored, recording the physiological variables of 192 animals (48 per journey), namely rectal temperature (RT), body temperature (BT), respiratory rate (RR), blood lactate concentrations and saliv...
This research aimed to analyze the interaction between surface water drainage and the geomorphological risk in the urban area of Garanhuns, PE, Brazil. This region, driven by the national policy of coffee eradication, implemented in 1965 by the Brazilian Institute of Coffee – IBC, has maximized its urban occupation. This constant advance of the u...
The objective of this work was to characterize the spectral responses of soil and plant indicators utilizing the Soil-Adjusted Vegetation Index (SAVI) and Leaf Area Index (LAI) in areas under the cultivation of ‘Orelha de Elefante Mexicana’ forage cactus (Opuntia stricta (Haw.) Haw.) and ‘Miúda’ (Nopalea cochenillifera (L.) Salm-Dyck) in Brazilian...
The objective of this study was to develop a software based on image processing and computer vision techniques for monitoring the feeding/collective behavior of broilers (Cobb) and validate it based on the results obtained from the visual analysis of an expert. The visual analysis was performed based on the observation and quantification of behavio...
The objective of this research was to evaluate the thermal comfort, physiological responses and performance of pigs in the growth phase, subjected to supplemental lighting programs in air-conditioned environments, in semiarid region of Pernambuco state, Brazil. Twenty-seven pigs (3/4 Duroc, ¼ Pietrain) were subjected to pens with no climate control...
The Caatinga biome is one of the most threatened in Brazil because most of the native forest has been deforested for land use, mainly with pasture, for animal production. The objective of this research was to evaluate the changes caused by agricultural and livestock activities in a region with a predominance of the Caatinga biome, using remote sens...
The ideal illuminance in poultry houses for broiler chickens may lead to improvement in housing efficiency and broiler welfare. In this context, the objective of this research was to evaluate the behavior and welfare of broiler chickens under effect of illuminance by light-emitting diode (LED) in white band (400-760 nm) and blue/green band (470-525...
The objective of this research was to analyze the differences between the food behaviors observed under the factors of production environment, sex and lighting system, using stochastic tools of multivariate analysis. As for the thermal characteristics of the environment, air temperature (T, °C), enthalpy (H, kJ kg-1), and black globe temperature an...
An adequate thermal environment in pig farming facilities is essential to ensure productivity and animal welfare. The objective of this study was to evaluate the behavior and performance of finishing pigs, subjected to climate-controlled environments and supplementary lighting. Twenty-seven pigs (3/4 Duroc, 1/4 Pietrain) were kept in pens with no c...
Resumo O conhecimento dos atributos físicos do solo é fundamental para realização de um manejo apropriado para o cultivo. Esse estudo foi conduzido com o objetivo de avaliar a variabilidade espacial dos atributos físicos do solo em área cultivada com palma forrageira na região de transição do agreste com o sertão pernambucano. O experimento foi con...
The indicators of thermal stress for ruminants are described according to the magnitude of the meteorological elements, physiological, behavioral adjustments, and productive response. This research was conducted to evaluate the ingestive behavior and phenotypic plasticity of Girolando heifers subjected to continuous grazing in the semiarid of Perna...
Spatial variability analysis of meteorological elements and precise identification of possible causes of thermal stress in poultry housing help producers in the decision making process. The objective of this study was to evaluate the internal environment of poultry houses in the downtime (sanitary void) and in the production phase, to characterize...
The objective was to verify possible modifications of the soil structure and the pattern of the spectral response of pasture vegetation cover to animal trampling. The study was carried out on a farm in the Agreste region of Pernambuco, Brazil in an area with continuous grazing by heifers. Soil samples were collected at 36 regular points, before and...
Brazil is the largest producer and exporter of sugarcane in the world, and the sugar and ethanol sector has invested in the development of new technologies and methods of planting to meet the market demand. Thus, the aim of this study was to evaluate the performance of sugarcane at the acclimation phase and under field conditions, from pre-sprouted...
The aim of this study was to employ the principal component technique to physiological data and environmental thermohygrometric variables correlated with detection of clinical and subclinical mastitis in dairy cattle. A total of 24 lactating Girolando cows with different clinical conditions were selected (healthy, and with clinical or subclinical m...
The spatial distribution of soil physical attributes related to feed production has a relevant impact on agricultural management techniques. The objective of this study was to investigate the spatial variability of soil physical attributes in forage palm cultivation area and its influence on crop development. The study was conducted in the Agreste...
A difusão de tecnologias voltadas a diversificação da matriz energética nacional, torna-se necessário para suprir a sazonalidade e a disponibilidade de energia elétrica. Objetivou-se com este estudo, identificar por meio de práticas extensionistas o uso de energia solar por pequenos produtores rurais e o nível de conhecimento sobre o uso desta font...
A mastite é uma doença que acomete o gado leiteiro e provoca muitas perdas econômicas, com comprometimento da produção de leite e depreciação da qualidade do produto final. Nesse sentido, a principal medida para minimização dos impactos negativos da mastite é a detecção precoce da doença em seu estágio inicial. Uma das alternativas mitigadoras é o...
A banana é uma das frutas mais importantes do mundo, tanto no que se refere à produção quanto à comercialização. O objetivo do estudo é analisar economicamente a produção de banana nos municípios de Iguatu e Cariús-CE. Utilizaram-se dados obtidos por meio de questionário aplicado a 20 produtores da região. Partindo da análise da receita mensal tota...
Sugarcane is a grass species that stands out worldwide in the production of ethanol. Brazil is the world’s largest producer and leader in exports, responsible for more than 50% of the products that are marketed worldwide. The objective of this study was to investigate the effect of photo-selective nets on micrometeorological variables and on sprout...
Sugarcane is considered one of the main alternatives for biofuel production and an important product of Brazilian agriculture, so it is indispensable to adopt new techniques for its cultivation and management. Thus, the present study aimed to evaluate the effect of the quality of supplemental lighting, based on light-emitting diode (LED), on the ac...
This study evaluated the response of several physical properties and the organic carbon (OC) content in a sandy soil before and after grazing in Northeastern Brazil. Three Girolando heifers with a mean weight of 300 ± 5 kg were kept under a continuous grazing system in an experimental area of 40 × 40 m for 21 days. Soil cores were sampled before an...
The joint analysis about cattle positioning and activity in pasture associated to soil attributes, become important for making decisions and forage management. In this work, the prototype of an electronic sensing device based on global positioning system (GPS) was developed with the objective of monitoring dairy cattle position in pasture and assoc...
Brazil is the world’s largest producer of sugarcane (Saccharum officinarum L.) and research aimed at propagation has promoted higher quality in production. The objective of this study was to investigate the effect of the variation of micrometeorological elements on the survival and quality of pre-sprouted sugarcane plantlets. The study was carried...
The objective of this study was to evaluate the thermal effect on the behavioral and physiological changes of Girolando heifers by means of principal components analysis. The research was conducted in the Agreste region of the state of Pernambuco, Brazil. Three heifers submitted to the continuous grazing system were used. For the determination of t...
A temperatura do substrato nas bandejas é um fator variável no tempo e no espaço, que assume relevante importância nos processos físicos e nas trocas de energia com a atmosfera. Esta grandeza física interfere na germinação, crescimento radicular, absorção de água e nutrientes. Dessa forma, o conhecimento da dinâmica da temperatura do substrato é fu...
This research was carried out in Recife, PE, Brazil, and aimed to assess the variation of the surface temperature of trays and substrate in the production of lettuce seedlings and its influence on the final product. Trays consisted of expanded polystyrene, conventional polyvinyl chloride, polyvinyl chloride painted white, and polyvinyl chloride pai...
Soils under pastures suffer physical modifications, in greater or lesser intensity, via the action of animal trampling. Thus, the aim was to evaluate the spatial dependence of soil physical attributes under bovine trampling. The trial was performed at Roçadinho Farm, Agreste of Pernambuco, Brazil, in a 40 x 40 m paddock that was managed with contin...
The objective of this research was to assess the spatial variability pattern concerning udder surface temperature in dairy cows that were healthy and in those with mastitis. A total of 24 animals were selected - eight healthy, eight with subclinical mastitis, and eight with clinical mastitis. Images were taken with a Flir i60 thermographic camera -...
Green roof is a technology that consists of the use of soil and vegetation installed in the roof of buildings, being a great solution to combat heat islands. Thus, this study aimed to compare micrometeorological changes and their effect on the energy balance of non-vegetated (slab) and vegetated building roofs by means of a simulation model calcula...
The objective of this study was to evaluate the thermal comfort and performance of broilers in their initial stage of development utilizing two different heating systems. The experiment was conducted in two sheds placed on a commercial farm. The heating systems were: indirect heating furnace and radiation heating drums. At the beginning of the heat...
The goat and sheep meat producer chain has developed in last years, thus, it is imperative to organize and structure the supply chain and to adopt reliable policies for products' traceability, as a tool to achieve these requirements. The study aimed to make a management program with a traceability model for goat and sheep meat production, with emph...
The objective of this research was to characterize the efficiency and convenience of sheep identification system and its implementation costs. Therefore we quantified the time for implementation, reading and data transfer to a management program in a manual system (earrings) and electronic system (subcutaneous transponders). Furthermore, it was eva...
Computational simulations of mass and energy flow help in implementing alternative cooling systems in protected environments. The aim of this study was to model and simulate the interaction between external and internal environments of a protected environment by means of computational fluid dynamics (CFD) techniques and validate micrometeorological...
This research aimed to assess Girolando calves’ concentrate intake and performance when placed in shelters with distinct roofing materials and programs of supplementary lighting during the milk-feeding stage. In order to so, we used a completely randomized design with a 3×3 factorial arrangement, with three replications. Females Girolando calves (n...
The instability of heliconia flower stem production may be related to climatic variation. Therefore, that information is very important for planning the species production throughout Brazil, mainly in northeast region. The objective of this work was analyzed the previous effects of photoperiod, air temperature and precipitation in the flower stem p...
This study aimed to investigate the applicability of artificial neural networks (ANNs) in the prediction of evapotranspiration of sweet pepper cultivated in a greenhouse. The used data encompass the second crop cycle, from September 2013 to February 2014, constituting 135 days of daily meteorological data, referring to the following variables: Temp...
Objetivou-se, com esta pesquisa, avaliar a eficiência térmica de materiais de cobertura em abrigos individuais, durante a fase de aleitamento de bezerras da raça Girolando. A pesquisa foi conduzida em uma fazenda, localizada na região Agreste do Estado de Pernambuco, Brasil. O delineamento foi o inteiramente casualizado, com 27 bezerras mestiças Ho...
Objetivou-se, com este trabalho, avaliar o conforto térmico proporcionado por diferentes tipos de cobertura, com base nas análises térmicas e nos índices de conforto térmico humano e zootécnico. A pesquisa foi realizada no período de 20 de março a 29 de maio de 2014, na UFRPE, no município de Recife, PE. Os tipos de cobertura analisados foram: telh...
The objective of this study was to determine the energy balance of the poultry-shed system and its effect on broiler performance during the production cycle. The experimental design was completely random with sub-divided blocks. The blocks were composed of five different types of sheds and the sub-blocks of the evaluation times (00:00 h to 23:00 h)...
The objective of this study was characterized the types of broilers' facilities in the Wasteland region of the state of Pernambuco. The constructive characteristics of poultry houses in the region were studied. We studied 68 sheds on 27 farms from May 2012 to April 2013. Based on these results, 90% of facilities was oriented east - west, with a sli...
The objective of this research was to evaluate the influence of heating systems in poultry houses on the characteristics of the psychrometric air and litter quality (moisture and pH) in winter conditions in the western Santa Catarina State, Brazil. The experiment was conducted in three properties of the integrated poultry farms Perdigão with three...
This study aimed to analyse the global solar radiation, temperature and their effects on the growth and development of seedlings of sugarcane under acclimatization in two types of coverages in a protected environment. The study was conducted in the experimental area at the Center for Strategic Technologies in the Northeast - Igarassu, PE. The green...
This study was conducted with the objective of identifying the insertion of Precision Animal Production in the current pig production model and its potential to the improvement of the production system, based on engineering principles processes, as well as animals physiological, physical and biological parameters in the text the technological princ...
The objective of this research was to evaluate different times of exposure of animals to cooling in the waiting pen on the comfort index, physiological parameters and milk production of girolando 7/8 cows. As treatments, four times of exposure of animals to adiabatic evaporative cooling system (AECS), 0, 10, 20 and 30 min were considered. The exper...
Objetivou-se, com este trabalho, avaliar os efeitos da climatização na pré-ordenha sobre o acondicionamento térmico, fisiologia, produção de leite e relação custo/benefício do sistema de resfriamento adiabático evaporativo (SRAE). Utilizaram- -se 16 vacas com produção de 18 kg de leite d-1, adotando-se delineamento em quadrado latino 4 x 4 e compar...
This research was carried out in the gestation facility, with 24 gilts, 12 females housed in individual cages
and 12 housed in collective pens, to evaluate different housing systems (individual cages, collective pens) for pregnant sows, aiming to describe quantitative and qualitative aspects of environment and the characteristics that influence the...
