Consulta: subjectFacets:"Artificial lighting"
Registros recuperados: 7
Data/hora: 13/06/2024 22:13:01

Technical evaluation of artificial ligthing systems for broiler houses
Provedor de dados: 70
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

Light emitting diode (LED) use in artificial lighting for broiler chicken production
Provedor de dados: 70
Autores: Santana,Mayara R. de; Garcia,Rodrigo G.; Naas,Irenilza de A.; Paz,Ibiara C. de L. A.; Caldara,Fabiana R.; Barreto,Bruna.
Light emitting diode (LED) has been used in commercial poultry industry by presenting superior energy savings and providing feasibility on production process. The objective of this research was to evaluate performance and carcass yield of broiler chickens exposed to different LED colors compared with fluorescent lamps. For that, two experiments (E1 and E2) were performed and 2,646 Cobb® chickens were used. In experiment E1, male birds were exposed to 20 lux artificial lighting with red, yellow, blue, and white LED bulbs; and fluorescent bulb. In experiment E2, male and female birds were exposed to 15 lux artificial lighting with red and blue LED bulbs; and fluorescent bulb. Cumulative weight gain (kg), feed intake (kg), feed conversion, hot carcass weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry; Production; Artificial lighting.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000300005

Technical and economic analysis of replacing artificial lighting system to induction of photoperiod effect in begonia's seedlings in greenhouse
Provedor de dados: 70
Autores: David,Eduardo; Rossi,Luiz Antonio; Pagliardi,Odail.
The type of artificial light used for inducing photoperiod effect in begonia's seedlings at greenhouse has fundamental importance in the growth and development of these plants and directly reflects in the electrical energy consumption used in this production process. The objective of this research was to analyze the technical and economic feasibility of replacing the current technology of artificial lighting used by the producers (incandescent lamps), by the technology of discharge lamps with the purpose of inducing photoperiod in a greenhouse. The analysis results indicate that the discharge lamp of 32 W Tubular Fluorescent discharge lamp was the one that presented the lower peak demand and lower average energy consumption of 85.01% compared to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Energy efficiency; Artificial lighting; Rural energy; Photoperiod induction.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000400005

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: 70
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

Technical-economic analysis of different lighting systems for broiler poultry
Provedor de dados: 70
Autores: Ribeiro,Priscilla A. P.; Yanagi Junior,Tadayuki; Silva,Joaquim P. da; Yanagi,Sílvia de N. M; Campos,Renato S.
ABSTRACT Broiler poultry is highly dependent on artificial lightening. Power consumption costs of artificial lighting systems is the second largest expense related to broiler industry, second only to feed expenses. Therefore, the current study focused to analyze technical and economic feasibility of replacing incandescent lamps already used in aviaries with other lamp types. Costs related to power consumption, implementation and maintenance of the lighting systems were evaluated with the aid of financial mathematics using net present value, return over investment and payback. Systems composed of six lamp types were analyzed in two different configurations to meet the minimum illuminance of 5 and 20 lux and for use in conventional sheds and dark house. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Economic analysis; Poultry farming; Energy efficiency; Artificial lighting.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000200242

The use of light-emitting diodes (LED) in commercial layer production
Provedor de dados: 89
Autores: Borille,R; Garcia,RG; Royer,AFB; Santana,MR; Colet,S; Naas,IA; Caldara,FR; Almeida Paz,ICL; Rosa,ES; Castilho,VAR.
Artificial lighting is one of the most powerful management tools available to commercial layer producers. Artificial light allows anticipating or delaying the beginning of lay, improving egg production, and optimizing feed efficiency. This study aimed at comparing the performance of commercial layers submitted to lighting using different LED colors or conventional incandescent lamps. The study was carried out in a layer house divided in isolated environments in order to prevent any influenced from the neighboring treatments. In total, 360 Isa Brown layers, with an initial age of 56 weeks, were used. The following light sources were used: blue LED, yellow LED, green LED, red LED, white LED, and 40W incandescent light. Birds in all treatment were submitted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial lighting; Commercial layers; Egg weight; Haugh units.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200009

Monochromatic light-emitting diode (LED) source in layers hens during the second production cycle
Provedor de dados: 91
Autores: Borille,Rodrigo; Garcia,Rodrigo G.; Nääs,Irenilza A.; Caldara,Fabiana R.; Santana,Mayara R.
ABSTRACTLight is an important environmental factor for birds, allowing not only their vision, but also influencing their physiological responses, such as behavioral and reproductive activity. The objective of this experiment was to evaluate the impact of different colors of monochromatic light (LED) sources in laying hens production during the second laying cycle. The study was conducted in an experimental laying house during 70 days. A total of 300 laying hens Isa Brown® genetic strain, aged 95 weeks, in the second laying cycle were used in the study. The artificial light sources used were blue, yellow, green, red and white. The light regimen was continuous illumination of 17 h per day (12 h natural and 5 h artificial) in a daily light regimen of 17L:5D...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial lighting; Egg production; Color of light source.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015000900877