Consulta: creatorFacets:"Lima,Renato R. de"
Registros recuperados: 9
Data/hora: 03/06/2024 05:15:21

Technical evaluation of artificial ligthing systems for broiler houses
Provedor de dados: Engenharia Agrícola
Autores: Pereira,Priscilla A.; Yanagi Junior,Tadayuki; Silva,Joaquim P. da; Lima,Renato R. de; Campos,Alessandro T.; Abreu,Lucas H. P.
The spatial distribution of illuminance and the electric consumption of artificial lighting system is one of the main problems related to broiler production. Therefore, the aim of this study was to evaluate the spatial distribution of luminance level and energy efficiency of different lighting systems for broiler houses. Six types of lamps were tested in two different configurations to find the minimum illuminance of 20 and 5 lux. The tested lamps were incandescent (IL) 100 W, compact fluorescent (CFL) 34 W, mixed (ML) 160 W, sodium vapor (SVL) 70 W, T8 fluorescent tube (T8 FTL) 40 W and T5 fluorescent tube (T5 FTL) 28 W. The first four were evaluated with and without reflective light fixture and the latter two without light fixture. It was observed that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial lighting; Spatial variability; Energy efficiency; Aviculture.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000600002

Caracterização espacial do ambiente termoacústico e de iluminância em galpão comercial para criação de frangos de corte
Provedor de dados: Engenharia Agrícola
Autores: Yanagi Júnior,Tadayuki; Amaral,Adriana G. do; Teixeira,Vitor H; Lima,Renato R. de.
A presente pesquisa teve o objetivo de avaliar e espacializar as variáveis termoacústicas e de iluminância no interior de um galpão comercial, com sistema de ventilação convencional e resfriamento evaporativo, destinado à produção de frangos de corte. Os frangos de corte Hybro foram alojados em um galpão subdividido em três regiões (refugos, fêmeas e machos), sendo criados a uma densidade aproximada de 20 aves m-2. O ambiente produtivo foi avaliado por meio do índice de conforto térmico, nível de ruído e de iluminância. Mapas de distribuição espacial destas variáveis foram gerados para o interior do galpão, usando o método da krigagem. Com base nos resultados, pode-se concluir que as aves, de forma geral, estiveram submetidas a condições ambientais...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avicultura; Ambiente de produção; Distribuição espacial.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162011000100001

USE OF PROTECTION SCREEN IN CONVENTIONAL AVIARIES (CALIFORNIAN TYPE) FOR LAYING HENS
Provedor de dados: Engenharia Agrícola
Autores: Lourençoni,Dian; Yanagi Junior,Tadayuki; Oliveira,Daniela D. de; Lima,Renato R. de; Pena,Mariela R. da S.
ABSTRACT The objective of this work was to evaluate the thermal environment inside conventional cages for laying hens, with and without the use of protective screens. This research was conducted in two conventional cages (open cage), where each cage had half of its area surrounded by high density polyethylene mesh (HDPE) with a diameter of 2.0 cm, and the other half was kept fully open. Hyline W-36 and Dekalb Brown laying hens were housed in these cages. The wind speed, dry bulb temperature (tdb), black globe temperature, humidity index (BGHI), and enthalpy (H) were analyzed. The results indicate that the use of the screen reduced the wind speed inside the cage by 0.22 m s−1. The presence of the screen affected tdb, BGHI, and H in some of the evaluated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry farming; Animal welfare; Ambience; Thermal comfort index.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000100048

AN EVALUATION OF THE THERMAL AND LUMINOUS ENVIRONMENT OF LAYING HEN AVIARIES EQUIPPED WITH LIGHT-EMITTING DIODE AND COMPACT FLUORESCENT LAMPS AND THEIR EFFECTS ON PRODUCTION AND EGG QUALITY
Provedor de dados: Engenharia Agrícola
Autores: Ribeiro,Priscilla A. P.; Yanagi Junior,Tadayuki; Lima,Renato R. de; Oliveira,Daniela D. de; Abreu,Lucas H. P.
ABSTRACT The thermal and luminous conditions in aviaries affect the production and quality of eggs. Thus, the aim of the present study was to evaluate the thermal and luminous environment of commercial laying hen aviaries equipped with compact fluorescent (CF) and light-emitting diode (LED) lamps and their influence on egg production and quality. The study was carried out in two commercial laying hen facilities with similar construction features and management. The first facility was illuminated with CF lamps and the second with LED lamps. The thermal environment was assessed via air temperature, air relative humidity, and enthalpy. The evaluated lamps provided a similar thermal environment in both facilities. The aviary equipped with LED lamps showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thermal environment; Artificial lighting; Laying hens.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162021000100001

Adjust of regression models to estimate the rectal temperature of broilers for the first 14 days of life
Provedor de dados: Engenharia Agrícola
Autores: Ponciano,Patrícia F.; Yanagi Junior,Tadayuki; Lima,Renato R. de; Schiassi,Leonardo; Teixeira,Vitor H.
The broiler rectal temperature (t rectal) is one of the most important physiological responses to classify the animal thermal comfort. Therefore, the aim of this study was to adjust regression models in order to predict the rectal temperature (t rectal) of broiler chickens under different thermal conditions based on age (A) and a meteorological variable (air temperature - t air) or a thermal comfort index (temperature and humidity index -THI or black globe humidity index - BGHI) or a physical quantity enthalpy (H). In addition, through the inversion of these models and the expected t rectal intervals for each age, the comfort limits of t air, THI, BGHI and H for the chicks in the heating phase were determined, aiding in the validation of the equations and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thermal environment; Poultry; Thermal comfort; Mathematical modeling; Physiological responses.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000100002

Spatial variability of noise level in agricultural machines
Provedor de dados: Engenharia Agrícola
Autores: Yanagi Junior,Tadayuki; Schiassi,Leonardo; Rossoni,Diogo F.; Ponciano,Patrícia F.; Lima,Renato R. de.
The knowledge of the spatial variability of noise levels and the build of kriging maps can help the evaluation of the salubrity of environments occupied by agricultural workers. Therefore, the objective of this research was to characterize the spatial variability of the noise level generated by four agricultural machines, using geostatistics, and to verify if the values are within the limits of human comfort. The evaluated machines were: harvester, chainsaw, brushcutter and tractor. The data were collected at the height of the operator's ear and at different distances. Through the results, it was possible to verify that the use of geostatistics, by kriging technique, made it possible to define areas with different levels for the data collected. With...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Human environment; Acoustic comfort; Occupation health; Geostatistics.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000200002

PERFORMANCE OF FUZZY INFERENCE SYSTEMS TO PREDICT THE SURFACE TEMPERATURE OF BROILER CHICKENS
Provedor de dados: Engenharia Agrícola
Autores: Bahuti,Marcelo; Abreu,Lucas H. P.; Yanagi Junior,Tadayuki; Lima,Renato R. de; Campos,Alessandro T.
ABSTRACT This study aimed to compare fuzzy systems with different configurations to predict the surface temperature (ts) of broiler chickens subjected to different intensities and durations of thermal challenges in the second week of life. Data on the ts of broiler chickens aged 8 to 11 days were acquired by infrared thermography and subjected to combinations of four dry-bulb temperatures (tdb) (24, 27, 30, and 33 °C) and four durations of thermal challenges (DTC) (1, 2, 3, or 4 days). The input variables of the fuzzy systems were tdb and DTC, and the output variable was ts. The Mamdani inference method involving five defuzzification methods [center of gravity (centroid), bisector of the area (bisector), largest of maximum (lom), middle of maximum (mom),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pertinence functions; Fuzzy logic; Defuzzification methods; Fuzzy inference methods; Chicks; Infrared thermography.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000600813

Avaliação de diferentes materiais para recobrimento de camas em baias de galpão modelo free-stall
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Cecchin,Daiane; Campos,Alessandro T.; Pires,Maria de F. A.; Lima,Renato R. de; Yanagi Junior,Tadayuki; Souza,Myriam C. M.
Objetivou-se, com o presente trabalho, comparar o uso de cama de colchão de borracha e de areia no recobrimento da superfície de baias para confinamento tipo free-stall. Foram monitoradas 18 vacas holandesas confinadas em galpão modelo free-stall cujas baias foram recobertas com camas de areia e colchão de borracha (tratamentos). O delineamento experimental foi em blocos casualizados. Os parâmetros comportamentais estudados foram os tempos despendidos nas atividades: deitada em ócio e deitada ruminando, em pé em ócio sobre a cama, em pé ruminando sobre a cama, registrados a cada 10 min. As variáveis ambientais e temperatura da superfície das camas foram registradas a cada hora. Houve maior preferência dos animais pela cama de areia para os comportamentos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Comportamento; Conforto; Gado de leite; Confinamento; ConstruÃ§Ãµes rurais.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014000100014

Ambiente acústico e aéreo em galpão comercial para poedeiras Dekalb Brown cercados por tela PEAD
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Lourençoni,Dian; Yanagi Junior,Tadayuki; Campos,Alessandro T.; Oliveira,Daniela D.; Lima,Renato R. de.
RESUMODevido às ocorrências dos vírus de influenza aviária (H5N1 e H7N2), estudos relacionados à biosseguridade têm sido intensificados em que uma das soluções discutidas é o uso de tela para cercar a área dos galpões evitando o contato das galinhas poedeiras alojadas com outras aves. Neste contexto objetivou-se, com o presente trabalho, avaliar e comparar a utilização de tela para cercar o perímetro de um galpão visando à criação de galinhas poedeiras, sobre o ambiente acústico e aéreo no interior da instalação. Esta pesquisa foi realizada em um galpão comercial do tipo californiano para criação de galinhas poedeiras da linhagem Dekalb Brown. Metade da área do galpão foi cercada por tela de polietileno de alta densidade (PEAD) e a outra metade foi mantida...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biosseguridade; Ruído; Amônia; Dióxido de carbono.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015000900882