Papers by PRISCILLA ABREU PEREIRA RIBEIRO
Engenharia Agrícola, 2021
The thermal and luminous conditions in aviaries affect the production and quality of eggs. Thus, ... more 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 higher illuminance than the one equipped with a CF lamp. Production performance was evaluated through feed intake (FI), feed conversion (FC), mortality (M), and laying percentage (LP). Specific gravity (SG) was used to evaluate eggshell quality. The variables related to production performance and eggshell quality of laying hens raised in aviaries equipped with LED lamps were statistically equal (F-test, p > 0.05) to those raised in aviaries equipped with CF lamps. These results indicate that the replacement of CF lamps with LED lamps does not adversely affect the yield and quality of eggs.
Engenharia Agricola, 2016
RESUMO: A distribuicao espacial das iluminâncias interfere na producao comercial de ovos e no con... more RESUMO: A distribuicao espacial das iluminâncias interfere na producao comercial de ovos e no consumo de energia eletrica, sendo considerada a segunda maior fonte de custos na cadeia produtiva. Portanto, objetivou-se com o presente trabalho avaliar a distribuicao espacial do nivel de iluminância e o consumo de energia eletrica em dois aviarios comerciais para producao de ovos. O primeiro aviario esta equipado com lâmpadas fluorescentes compactas (LFC) e o segundo com lâmpadas de diodo emissor de luz (LED). As iluminâncias nos aviarios foram analisadas por meio de estatistica descritiva e a sua distribuicao espacial atraves da geoestatistica. Verificou-se que o aviario equipado com LFC lâmpadas fluorescentes compactas apresentou melhor uniformidade na distribuicao das iluminâncias e melhores resultados para se atender aos niveis de iluminamento de 5 lux. Por sua vez, aquele equipado com lâmpadas de LED apresentou consumo de energia eletrica 43,52% menor do que aquele equipado com LFC.
Engenharia Agrícola, 2016
The spatial illuminance distribution interferes in the commercial production of eggs and electric... more The spatial illuminance distribution interferes in the commercial production of eggs and electric energy consumption, being considered the second major source of costs in the production chain. Therefore, in this study the objective was to evaluate the spatial distribution of the illuminance level and electric energy consumption in two commercial aviaries for egg production. The first aviary was equipped with compact fluorescent lamps (CFL) and the second, with light-emitting diode (LED) lamps. The illuminances in the aviaries were analyzed using descriptive statistics and their spatial distribution through geostatistics. It was found that the aviary equipped with CFL showed better uniformity in the illuminances distribution and better results in attending the luminance levels of 5 lux. On the other hand, the one equipped with LED lamps showed electric energy consumption 43.52% less than the one equipped with compact fluorescent lamps (CFL).
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Papers by PRISCILLA ABREU PEREIRA RIBEIRO