Spacial Illuminances Variability and Energy Consumption in Aviaries for Laying Hens Equiped With Compact Fluorescent Lamps and Light Emitting Diode

Ribeiro, Priscilla Abreu Pereira; Yanagi, Tadayuki; Oliveira, Daniela; Ferraz, Gabriel Araújo e Silva; Lourençoni, Dian

doi:10.1590/1809-4430-eng.agric.v36n6p962-971/2016

Cited by 8 publications

(3 citation statements)

References 18 publications

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“…The use of natural lighting, despite its variation during the day, promotes lower consumption of electricity, and it is up to the producer to perform the management of closing and opening of the side curtains to adapt the illuminance inside the aviary. Ribeiro et al (2016) observed lux values higher than 100, even with artificial lighting in the southern region of Minas Gerais, Brazil. Another possible alternative would be the use of a device that reduces the intensity of the electrical current of the lighting system (dimmer), which would enable the control of illuminance within the recommended range from 5 to 20 lux (Santana et al, 2014).…”

Section: Resultsmentioning

confidence: 77%

Geostatistics applied to the environmental mapping of aviaries

Lopes

Silva

Melo

et al. 2020

Rev. bras. eng. agríc. ambient.

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ABSTRACT 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 spatial thermal variability and to identify critical control points. The study was carried out in the Alluvial Valley of the Mimoso River, municipality of Pesqueira, PE, Brazil. The data of air temperature, wind speed and illuminance were recorded in November (spring season), at 155 points within each poultry facility (10 x 90 m), spaced in a 3.0 x 2.5 m grid and subjected to descriptive statistical analysis and geostatistics. There was a strong spatial dependence for the variables air temperature, wind speed and illuminance. The ranges obtained for the air temperature in the facilities were from 48.22 to 114.52 m, while for the wind speed and illuminance were less than 10 m, thus revealing the need for greater homogeneity of the studied variables and meeting of the thermal requirement of the poultry.

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Section: Resultsmentioning

confidence: 77%

Geostatistics applied to the environmental mapping of aviaries

Lopes

Silva

Melo

et al. 2020

Rev. bras. eng. agríc. ambient.

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“…The mathematical model used to perform the semivariogram fitting was spherical, which is widely used in geostatistical studies, since they are referenced in geostatistics as transitive models (models with sill C 0 + C 1 ). The selection of the spherical model is justified because it is the one that best adapted to the fits in studies in the environmental variables in facilities for animals (Ponciano et al, 2013;Gonçalves et al, 2016;Ribeiro et al, 2016). From the fit of a mathematical model to the calculated values of γ (h), the following coefficients of the theoretical model for the semivariogram are calculated: nugget effect (C 0 ), sill (C 0 + C 1 ) and range (a).…”

Section: Resultsmentioning

confidence: 99%

Spatial variability of enthalpy in rabbit house with and without ridge vent

Ferraz

Damasceno

et al. 2019

Rev. bras. eng. agríc. ambient.

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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 performed using geostatistical tools and isocolor maps through interpolation by kriging. Based on results from geostatistics, it was possible to characterize the variability magnitude and structure of this variable inside the rabbits’ houses with and without ridge vent. The heterogeneity of the spatial distribution of enthalpy in several regions of two houses was also observed through generated isocolor maps. The ridge vent assisted in obtaining a more favorable internal environment for rabbit breeding because this house showed more comfortable conditions of enthalpy values, besides lower heterogeneity of the spatial distribution of enthalpy.

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“…Conventional punctiform lamps used in vertical poultry production systems enable low uniformity of light distribution because there is high illuminance in regions close to the lamps and low illuminance in the farthest regions; the uneven light distribution happens both vertically and horizontally ( Ribeiro et al., 2016 , Thomson and Corscadden, 2018 ). Some studies have shown that uneven lighting ( Yildiz et al., 2006 , Rossi and Massarotto, 2015 ) and low illuminance ( Renema et al., 2001 , O’Connor et al., 2011 ) can compromise the productive performance of birds.…”

Section: Introductionmentioning

confidence: 99%

The effect of linear lighting systems on the productive performance and egg quality of laying hens

Barros

Sartor

et al. 2020

Poultry Science

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The low uniformity in light distribution provided by conventional lighting systems installed in laying poultry can compromise the productive performance and egg quality of laying hens. Thus, the aim of the current study is to evaluate the effect of a linear lighting system with light-emitting diode (LED strip) on the productive performance and egg quality of laying hens, by comparing it to the conventional LED lamp lighting system. The study used Hy-Line Brown hens from a commercial production unit. Hen-day egg production (%), mortality rate (%), egg weight (g), albumen height (mm), Haugh unit, eggshell thickness, eggshell strength, and thermal-environment conditions were evaluated from the 19th to the 48th wk of age. The results have shown that LED strips were capable of improving egg production ( P < 0.05) in comparison to LED lamps. Egg quality was not affected ( P > 0.05) by the evaluated lighting systems throughout the experimental period. Results of the current study indicate that the homogeneous illuminance distribution provided by the linear LED strip lighting system at different cage floors improved egg production in comparison to the conventional LED lamp lighting system.

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Spacial Illuminances Variability and Energy Consumption in Aviaries for Laying Hens Equiped With Compact Fluorescent Lamps and Light Emitting Diode

Cited by 8 publications

References 18 publications

Geostatistics applied to the environmental mapping of aviaries

Geostatistics applied to the environmental mapping of aviaries

Spatial variability of enthalpy in rabbit house with and without ridge vent

The effect of linear lighting systems on the productive performance and egg quality of laying hens

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