Curtain color and lighting program in broiler production: I - general performance

Abreu, V. M. N.; Abreu, P. G. de; Coldebella, Arlei; Jaenisch, F. R. F.; Filho, J. I. dos Santos; Paiva, D. P. de

doi:10.1590/s1516-35982011000900026

Cited by 16 publications

(9 citation statements)

References 6 publications

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“…Similarly in terms of input costs, the green group was better off than blue group but higher mortality in the group resulted in lesser returns. The economics of different lighting programmes in broiler production has been worked Page62 such as between constant and intermittent lighting schedules (Abreu et al, 2011) and between different intensities (Ahmad et al, 2011). In these studies, the cost of electricity was also a variable factor which was not the case in present study as same wattage bulbs were used in all the four groups.…”

Section: Resultsmentioning

confidence: 99%

Economics of Broiler Rearing Under Different Colours of Light

Khaliq¹,

Khan²,

Hamadani³

et al. 2017

Int. J. Livest. Res.

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Section: Resultsmentioning

confidence: 99%

Economics of Broiler Rearing Under Different Colours of Light

Khaliq¹,

Khan²,

Hamadani³

et al. 2017

Int. J. Livest. Res.

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“…Subsequently, electricity demand, consumption and its costs were estimated, as well as the initial investment for system installation. Electricity parameters, its costs and lamp operating life (Table 4) (RIGOBELO et al, 2011;LEITE et al, 2011;ABREU et al, 2011;FREITAS et al, 2013). The number of daylight hours was estimated daily for the city of Lavras -MG (latitude 21º14' S, longitude 45º00' W and 918 m altitude) by equation 1 (CAMPBELL & NORMAN 1998).…”

Section: Methodsmentioning

confidence: 99%

Technical-economic analysis of different lighting systems for broiler poultry

Ribeiro¹,

Yanagi²,

Silva³

et al. 2016

Eng. Agríc.

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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 lamps tested were incandescent (LI) of 100 W, compact fluorescent (CFL) of 34 W, mixed (ML) 160 W sodium vapor (SVL) of 70 W, tubular fluorescent T8 (TFL T8) of 40 W and tubular fluorescent T5 (TFL T5) of 28 W. For the systems tested, it was found that the tubular fluorescent lamps T8 and T5 showed the best results of technical and economic feasibility. KEYWORDS:Economic analysis, Poultry farming, Energy efficiency, Artificial lighting. ANÁLISE TÉCNICO-ECONÔMICA DE DIFERENTES SISTEMAS DE ILUMINAÇÃO PARA AVIÁRIOS DE FRANGOS DE CORTERESUMO: A produção de frangos de corte é altamente dependente do uso de luz artificial. O custo do consumo de energia elétrica do sistema de iluminação artificial constitui a segunda maior despesa relacionada à produção de frangos de corte, inferior apenas às despesas com ração. Portanto, objetivou-se com o presente trabalho analisar a viabilidade técnico-econômica de se substituir a lâmpada incandescente utilizada nos aviários por outros tipos de lâmpada. O consumo de energia e os custos de implantação e de manutenção dos sistemas de iluminação foram avaliados com auxílio da matemática financeira, por meio do valor presente líquido, da taxa de retorno do investimento e do tempo de retorno do capital (payback). Foram avaliados sistemas compostos por seis tipos de lâmpada, em duas configurações diferentes, para atender às iluminâncias mínimas de 5 e 20 lux e para a utilização em galpões convencionais e dark house. As lâmpadas testadas foram a incandescente (LI) de 100 W, a fluorescente compacta (LFC) de 34 W, a mista (LM) de 160 W, o vapor de sódio (LVS) de 70 W, a fluorescente tubular T8 (LFT T8) de 40 W e a fluorescente tubular T5 (LFT T5) de 28 W. Para os sistemas testados, verificou-se que as lâmpadas fluorescentes tubulares T8 e T5 apresentaram os melhores resultados de viabilidade técnica e econômica. PALAVRAS-CHAVE:análise econômica, avicultura, eficiência energética, iluminação artificial.

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“…bras., Brasília, v.49, n.7, p.559-568, jul. 2014 DOI: 10.1590/S0100-204X2014000700009 same feed was used for all the chicks throughout the experimental period, with no changes in its formulation, with a continuous light regime (Abreu et al, 2011). Chicks were maintained at 33, 30, and 27°C during the first, second, and third week, respectively, as recommended by Menegali et al (2013).…”

Section: Methodsmentioning

confidence: 99%

Predicting chick body mass by artificial intelligence-based models

Ferraz

Yanagi

Julio

et al. 2014

Pesq. agropec. bras.

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-The objective of this work was to develop, validate, and compare 190 artificial intelligence-based models for predicting the body mass of chicks from 2 to 21 days of age subjected to different duration and intensities of thermal challenge. The experiment was conducted inside four climate-controlled wind tunnels using 210 chicks. A database containing 840 datasets (from 2 to 21-day-old chicks) -with the variables dry-bulb air temperature, duration of thermal stress (days), chick age (days), and the daily body mass of chicks -was used for network training, validation, and tests of models based on artificial neural networks (ANNs) and neuro-fuzzy networks (NFNs). The ANNs were most accurate in predicting the body mass of chicks from 2 to 21 days of age after they were subjected to the input variables, and they showed an R² of 0.9993 and a standard error of 4.62 g. The ANNs enable the simulation of different scenarios, which can assist in managerial decision-making, and they can be embedded in the heating control systems.Index terms: animal welfare, artificial neural network, broiler, modeling, neuro-fuzzy network, thermal comfort. Predição da massa corporal de pintinhos por meio de modelos baseados em inteligência artificialResumo -O objetivo deste trabalho foi desenvolver, validar e comparar 190 modelos baseados em inteligência artificial, para predizer a massa corporal de pintinhos de 2 a 21 dias de vida, submetidos a diferentes períodos e intensidades de estresse térmico. O experimento foi realizado com 210 pintinhos, em quatro túneis de vento climatizados. Um banco de dados com 840 conjuntos de dados (de aves de 2 a 21 dias) -com as variáveis temperatura de bulbo seco do ar, duração do estresse térmico (dias), idade das aves (dias) e a massa corporal diária dos pintinhos -foi utilizado para treinamento de rede, validação e testes dos modelos baseados em redes neurais artificiais (RNA) e redes "neuro-fuzzy" (RNF). As RNA mostraram-se mais precisas para se predizer a massa corporal de pintinhos de 2 a 21 dias de idade, submetidos às variáveis de entrada, e apresentaram R² de 0,9993 e erro-padrão de 4,62 g. As RNA propiciam a simulação de diversos cenários, que podem auxiliar na tomada de decisões em relação ao manejo, e podem ser incorporadas nos sistemas de controle de aquecimento.Termos para indexação: bem estar animal, redes neurais artificiais, frango, modelagem, redes neurais difusas, conforto térmico.

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Curtain color and lighting program in broiler production: I - general performance

Abstract: -The objective of the present study was to evaluate mortality and performance, darkling beetle population

Cited by 16 publications

References 6 publications

Economics of Broiler Rearing Under Different Colours of Light

Economics of Broiler Rearing Under Different Colours of Light

Technical-economic analysis of different lighting systems for broiler poultry

Predicting chick body mass by artificial intelligence-based models

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