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Registros recuperados: 27
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ACOUSTIC ENVIRONMENT AND GAS PRODUCTION IN DIFFERENT GROWING-FINISHING SWINE FACILITIES REA
Andrade,Rafaella R.; Campos,Alessandro T.; Cecchin,Daiane; Sousa,Francine A.; Amaral,Pedro I. S..
ABSTRACT This study aimed to evaluate gas levels and the acoustic environment (noise) of growing-finishing swine in different facilities, one composed of shallow pool (SP) and another of partially slatted floor (PSF). Sensors and a sound level meter were used to measure gas concentrations (CO2 and NH3) and noise at 1.50 meters above the ground and at animal height. Data on gas concentrations and noise levels were measured at 9am, 12pm, and 3 pm. Results showed differences (P<0.05) between noise levels at animal height and gas concentrations measured in relation to stall type and data collection time. The highest noise values were found in the shallow pool stall, measured at animal level. The highest NH3 (13 ppm) and CO2 (1174.5 ppm) values were observed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ambience; Welfare; Air quality; Noise.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000600953
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Avaliação de parâmetros fisiológicos em diferentes raças de caprinos na Região Nordeste brasileira. Repositório Alice
BARROS JUNIOR, C. P.; SOUSA JUNIOR, S. C. de; CAMPELO, J. E. G.; AZEVEDO, D. M. M. R.; CARVALHO, G. M. C.; SOUSA, P. H. A. A. de..
Com o crescente aumento da necessidade de produtos de origem animal, vem se buscando alternativas para melhorar o índice produtivo nos rebanhos de caprinos, nessa virtude animais adaptados as condições climáticas vêm se destacando no cesário produtivo, de tal forma que esse pequenos ruminantes possam recorrer a seu mecanismos de termotolerância para manter a temperatura corpórea estável. Para que caprinos venham a desenvolver todo o seu potencial produtivo é necessário que as forças do ambiente, manejo e sanidade estejam a seu favor, nesse sentido inúmeros pesquisadores vêm buscando soluções para que esses requisitos venha a se desenvolver com êxito. Desta forma, o objetivo desta revisão é de reunir informações a respeito do conforto térmico de caprinos...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Ambiência; Temperatura retal; Frequência respiratória; Ambience; Rectal temperature; Respiratory frequency.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1089076
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Behavior of beef cattle in silvipastoral systems with eucalyptus R. Bras. Zootec.
Souza,Wander de; Barbosa,Orlando Rus; Marques,Jair de Araújo; Gasparino,Eliane; Cecato,Ulysses; Barbero,Leandro Martins.
It was aimed to verify the effect of the presence of trees and their heights in silvipastoral system on the intake behavior of Nellore heifers in the summer. Ten heifers for the following systems were used: system without shade, silvipastoral system with 8-meter and 18-meter trees. The data were collected in three days during 12 hours, subdivided in morning (7:15 a.m. to 1. p.m.) and afternoon (1:15 p.m. to 7 p.m.). It was evaluated the times and frequency of grazing, rumination, idle and the percentage of time that the animals remained in the shade; black globe-humidity index, whose average and minimum values (86 and 82) were equal for 8-meter tree system and 18-meter tree system; however they were lower when compared to the without shade system (89 and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ambience; Indle; Index; Rumination; Shade; Tree.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000300029
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Broiler breeder hen performance and egg hatchability during rainy season in Brazilian semi-arid region REA
Furtado,Dermeval A.; Tota,Laura D. C. A.; Nascimento,José W. B.; Guimarães,Mércia C. da C.; Lopes Neto,José P..
Henhouse thermal comfort and bird age influence broiler breeder hen productivity; this way, the present research aimed to assess thermal comfort indexes and broiler breeder hen performance during winter in North East semi-arid region from Brazil, using a Cobb Avian 48 broiler strain at the age of 38 and 50 weeks. We measured the following bioclimatic indexes: air temperature and relative humidity, black globe temperature and humidity, CO2 concentration and sound pressure levels at henhouse facility. Data analysis design was complete randomized in a 3 x 3 factorial scheme with three treatments (months) and three replications (week number of collection by month). A number of 25 climatic data were observed. Bioclimatic indexes at the most warm hours...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ambience; Thermal comfort; Egg-laying; Noise.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000300001
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Economic profitability indicators of minitomatoes organic production in greenhouses Horticultura Brasileira
Araújo,Haroldo F; Leal,Paulo AM; Betin,Pâmela S; Nunes,Eduardo F.
ABSTRACT Financial profitability is a factor as important as quantifying production using new technologies. This study was installed to evaluate short and long term financial viability of organic production of cherry tomatoes. Plants were grown in a greenhouse under diverse technological degrees for partial control of micrometeorological elements. The experiment was carried out at the experimental field FEAGRI/UNICAMP in three greenhouses with automated mechanical ventilation systems, evaporative cooling and thermo reflective screen. We cultivated Carolina cultivar in a spacing of 0.5x0.9 m, each plant conducted with two stems, under organic production and fertilization management. The average of production data of treatments {three greenhouses (A=...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Solanum lycopersicum; Financial profitability; Economic analysis; Ambience.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000200246
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Environmental variables in packing houses and their effects on the quality of grapes AGRIAMBI
Vasconcelos,Osvaldo C.; Dacanal,Cristiane; Turco,Sílvia H. N.; Freitas,Sergio T.; Ramos,Clóvis M. C.; Lima,Paula M. L. de.
ABSTRACT The aim of this study was to characterize the thermal environment in the selection and packing areas of a packing house and its effects on the quality of table grapes produced in the São Francisco Valley, Brazil. The thermal environment was monitored during the winter and summer seasons. The highest value of air temperature (Tair) and the lowest relative humidity (RH) observed in the packing house were 35 °C and 40.0%, respectively, obtained during the summer, for 8 h. After observing the thermal environment data of the packing house, simulations were performed to evaluate the effect of the ideal environmental storage conditions and observed thermal conditions on the postharvest quality of “Thompson” grapes. Grapes were harvested and stored...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ambience; Spatial distribution; Post harvesting.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000200125
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Evaluation of roof slope and exposure with different roofing materials in reduced models of animal production facilities in spring and summer REA
Melo,Thiago V.; Furlan,Renato L.; Milani,Adhemar P.; Buzanskas,Marcos E.; Mota,Diego A..
The present study was conducted at the Department of Rural Engineering and the Department of Animal Morphology and Physiology of FCAV/Unesp, Jaboticabal, SP, Brazil. The objective was to verify the influence of roof slope, exposure and roofing material on the internal temperature of reduced models of animal production facilities. For the development of the research, 48 reduced and dissemble models with dimensions 1.00 × 1.00 × 0.50 m were used. The roof was shed-type, and the models faced to the North or South directions, with 24 models for each side of exposure. Ceramic, galvanized-steel and fibro tiles were used to build the roofs. Slopes varied between 20, 30, 40 and 50% for the ceramic tile and 10, 30, 40 and 50% for the other two. Inside the models,...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Ambience; Heat; Shed.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000600001
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INFLUENCE OF DIFFERENT THERMAL ENVIRONMENTS ON THE PERFORMANCE OF LAYING HENS DURING THE INITIAL STAGE OF REARING REA
Andrade,Rafaella R.; Tinôco,Ilda de F. F.; Baêta,Fernando da C.; Albino,Luiz F. T.; Cecon,Paulo R..
ABSTRACT This study was conducted with the aim of assessing the effects of different ambient temperature values on the performance of laying birds from one to 42 days of age in order to obtain optimal comfort temperatures. A total of 864 laying hens were distributed in four climatic chambers with different temperature ranges. One of the chambers was maintained within the thermal range recommended by the literature and the others were maintained under temperatures that consisted of mild and moderate cold stress and moderate heat stress. The experiment was conducted according to a completely randomized design in a split-plot arrangement and six replications. The data were analyzed by means of the analysis of variance and regression. The final performance of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ambience; Zootechnical performance; Cold stress; Light laying hens; Thermoneutrality.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000100032
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INFRARED THERMOGRAPHY FOR DETERMINING TRAY TEMPERATURE IN LETTUCE PRODUCTION REA
Cavalcanti,Sávio D. L.; Pandorfi,Héliton; Guiselini,Cristiane; Menezes,Dimas; Neto,Luiz A. de A..
ABSTRACT 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 painted gray. Two cultivars (Solaris and Vanda) were used to register crop biometric variables from seedling stage to the final product (46 days). Tray and substrate temperatures were recorded by means of an infrared thermal imager. The experimental design was a completely randomized design in a 4 × 2 factorial scheme with three replications. The conventional polyvinyl chloride tray presented the highest...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ambience; Protected cultivation; Lactuca sativa L.; Seedlings.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000100041
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Integrated multivariate analysis to evaluate effects of pre-slaughter handling on pork quality REA
Machado,Sivanilza T.; Santos,Rodrigo C.; Caldara,Fabiana R.; Gonçalves,Manoel C.; Nääs,Irenilza de A..
The aim of this study was to investigate the effect of pre-slaughter handling on the occurrence of PSE (Pale, Soft, and Exudative) meat in swine slaughtered at a commercial slaughterhouse located in the metropolitan region of Dourados, Mato Grosso do Sul, Brazil. Based on the database (n=1,832 carcasses), it was possible to apply the integrated multivariate analysis for the purpose of identifying, among the selected variables, those of greatest relevance to this study. Results of the Principal Component Analysis showed that the first five components explained 89.28% of total variance. In the Factor Analysis, the first factor represented the thermal stress and fatiguing conditions for swine during pre-slaughter handling. In general, this study indicated the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Transport operation; Ambience; PSE meat; Multivariate analysis.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000300007
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Microclimate and feeding behavior of beef cattle in integrated crop-livestock-forest systems with Brachiaria brizantha. Repositório Alice
ALVES, F. V.; VOLPI, D.; ARGUELHO, A. S.; ALMEIDA, R. G. de; ZOPOLLATTO, M..
2016
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Ambience; Thermal comfort; Agroforestry; Animal welfare; Grazing.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1061026
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Natural shading and productivity index of broiler chickens REA
Souza,Fernando A.; Milani,Adhemar P..
The appropriate use of natural resources in the design of broiler houses provides a reduction in farming operating costs and optimization of production conditions. Therefore, the natural shading around the broiler house can be an alternative for improving internal conditions of comfort. This study verified the efficiency of natural shading in the broiler productivity index (PI) in East-West oriented commercial housings. The PI of 32 commercial broiler houses in five flocks divided throughout a year was compared. The sheds had the same management, density and the same structural features, except from tree shading: on the North face; on the South face; on both faces and without shading. It was observed that broiler house in East-West direction with shading...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tree-shading; Ambience; Broiler houses; Broiler industry.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000300601
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Physiological responses of caprines raised under different types of covering REA
Kawabata,Celso Y.; Jesus,Lindalva de A. de; Silva,Ana Paula V. da; Sousa,Thiago V. R. de; Cruz,Luis F. B. da.
Thermal discomfort inside facilities is one of the factors responsible for low productivity of caprines in the Brazilian Northeast region, because inadequate weather conditions can cause elevated rectal temperature, increased respiratory rate, decreased food ingestion and reduced production. The present paper aimed to study the behavior of physiological thermoregulation of the animals (respiratory rate - RR and rectal temperature - RT) at four different times of the day (8 a.m., 11 a.m., 2 p.m. and 5 p.m.) and their relation to bioclimatic indexes (Temperature Humidity Index - THI, Black Globe Humidity Index - BGHI and Radiant Heat Load - RHL) in order to determine whether the type of covering used in the animals facilities (ceramic covering - CC, asbestos...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ambience; Respiratory rate; Rectal temperature; Thermoregulation.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000500003
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Prediction of mean surface temperature of broiler chicks and load microclimate during transport REA
NAZARENO,AÉRICA C.; SILVA,IRAN J. O. DA; FERNANDES,DANIELLE P. B..
ABSTRACT This study aimed to determine a model to predict mean surface temperature of broiler chicks and live load microclimate conditions during transport by using neural networks. The research was conducted in the state of São Paulo, Brazil, by monitoring nine shipments with different density of boxes using an air-conditioned truck with an average capacity of 380 boxes. Fourteen chick boxes were chosen on each shipment, assessing five chicks per box. The mean surface temperature of chicks (MST) was measured with an infrared thermometer in both loading and unloading. By assessing the container microclimate (center and inside boxes), air temperature (T), relative humidity (RH) and specific enthalpy (h) were recorded; thereby, seventeen data loggers were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Poultry; Ambience; Neural networks; Air-conditioned truck.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000400593
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Productive losses on broiler preslaughter operations: effects of the distance from farms to abattoirs and of lairage time in a climatized holding area R. Bras. Zootec.
Vieira,Frederico Márcio Corrêa; Silva,Iran José Oliveira da; Barbosa Filho,José Antonio Delfino; Vieira,Afrânio Márcio Corrêa.
This work aimed to assess the effects of preslaughter lairage time on the welfare and mortality of broilers transported in different farm-abattoir distances. It was evaluated 215 poultry transport trucks from a commercial poultry slaughterhouse from 2006 to 2007. Data were obtained from the holding area acclimatized through fans and water misting in the mornings, afternoons and at night. The thermal variables (temperature and relative humidity), distance, lairage time and density of birds per cage were considered in the analysis. The effects of distance and lairage time were important in the variation of rectal temperature of the animals and on the number of dead animals per truck. Two models were developed (mean and dispersion), for each response variable...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ambience; Poultry production; Preslaughter handling; Slaughterhouse.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001100021
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Shading effect on microclimate and thermal comfort indexes in integrated crop-livestock-forest systems in the brazilian Midwest. Repositório Alice
KARVATTE JUNIOR, N.; KLOSOWSKI, E. S.; ALMEIDA, R. G. de; MESQUITA, E. E.; OLIVEIRA, C. C. de; ALVES, F. V..
The objective of this paper was to perform a microclimate evaluation and determine the indexes of thermal comfort indexes, in sun and shade, in integrated crop-livestock-forest systems with different arrangements of eucalyptus and native trees, in the Brazilian Midwest. The experiment was conducted at Embrapa Beef Cattle in Campo Grande, state of Mato Grosso do Sul, Brazil, from July to September 2013. The evaluations were conducted on four consecutive days, from 8:00 a.m. to 5:00 p.m., local time (GMT?4:00), with 1 hour intervals, recording the microclimate parameters: air temperature (°C), black globe temperature (°C), wet bulb temperature (°C), relative humidity (%), and wind speed (m.s?1), for the subsequent calculation of the Temperature and Humidity...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Ambience; Native trees; Animal welfare; Eucalyptus; Shade; Thermal stress.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1061031
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Simulation of the internal environment of a post-harvest installation and a solar dryer of coffee AGRIAMBI
Osorio H.,Robinson; Guerra G.,Lina M.; Tinôco,Ilda F. F.; Martins,José H.; Souza,Cecília de F.; Osorio S.,Jairo A..
ABSTRACT This study aimed to make a simulation of the internal environment of an installations for coffee post-harvest and a parabolic solar dryer, specifically analyzing the effect of natural ventilation on the temperature and relative humidity inside these buildings. The ventilated coffee-processing plant and the solar dryer with the largest natural ventilation area showed the best results to preserve the quality of coffee grain.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ambience; Bioclimatic; Coffee quality; Wet processing of the coffee bean.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000200163
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Spatial variability of enthalpy in rabbit house with and without ridge vent AGRIAMBI
Ferraz,Patrícia F. P.; Ferraz,Gabriel A. e S.; Damasceno,Flavio A.; Moura,Raquel S. de; Silva,Maria A. J. G.; Rodrigues,Rodrigo de L..
ABSTRACT The profitability of a rabbit farming system must consider the rabbit’s breed, nutrition, management, sanitation and mainly the thermal environment that the animal will be exposed during the productive period. The aim of this study was to compare the internal thermal environment of two rabbit houses, one with ridge vent and the other without ridge vent. Geostatistical technique was used to evaluate the spatial variability of enthalpy. Data were collected at 48 points in each house during eight days at the end of summer season 2016. Measurements of dry-bulb temperature, relative humidity and wind speed were made for 1 min at three times a day at 7:00 a.m., 12:00 a.m. and 5:00 p.m. In addition, the enthalpy was calculated and a data analysis was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ambience; Welfare; Rabbit breeding; Geostatistics; Mapping.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000200126
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TECHNICAL FEASIBILITY OF THE ACCLIMATIZATION SYSTEM IN AVIARY OF POSTURE: A CASE STUDY REA
Pereira,Danilo F.; Kodaira,Vanessa; Bueno,Leda G. de F.; Soares,Nilce M.; Salgado,Douglas D'Alessandro.
ABSTRACT: The objective of this study was to compare the performance of laying hens between automated aviaries, one with and another without acclimatized system. On a daily basis it was registered in each aviary the mortality, the egg production, and the feed consumption. The variables of the dry bulb temperature, relative humidity and black globe temperature were registered every 30 minutes using the thermos hygrometer. Every 28 days ninety eggs from each aviary were collected randomly and the variables egg weight, shell weight, shell thickness and Haugh Unit were registered. The consumption and quality of the electrical energy supply were monitored every 30 minutes using registers of electrical magnitude. The results showed that the acclimatization...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ambience; Electrical energy; Mortality; Egg production; Precision animal science.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000500855
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Temperature mapping of trucks transporting fertile eggs and day-old chicks: Efficiency and/or acclimatization? AGRIAMBI
Nazareno,Aérica C.; Silva,Iran J. O. da; Vieira,Frederico M. C.; Santos,Rofson F. S..
The aim of this study was to evaluate the thermal profiles of trucks used for transporting fertile eggs and day-old chicks. This study was carried out in a broiler hatchery in the State of Sao Paulo. The experiment was conducted during three months, in which six egg loads and 11 chick loads were observed. Thermal profile assessments were performed in an environmental controlled trucks with thermal control and following dimensions: 7.5 x 2.6 x 2.5 m for eggs, and 8.0 x 2.5 x 2.5 m for chicks. The maximum transport capacities were approximately of 592 boxes of eggs and 630 boxes of chicks, distributed all over the lorry. The thermal profiles were assessed at five-minutes-interval for eggs and in ten-minutes-interval for chicks, using thermal variables such...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aviculture; Ambience; Pre-gate environment; Egg transport; Day-old chicks transport.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015000200134
Registros recuperados: 27
Primeira ... 12 ... Última
 

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